TY  - JOUR
AU  - Gennari, F.
AU  - Periša, Jovana
AU  - Sekulić, Milica
AU  - Antić, Željka
AU  - Dramićanin, Miroslav
AU  - Toncelli, A.
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12887
AB  - In this study we present a morphological and spectroscopical characterization of three different erbium doped nanocrystal samples, namely two oxides (Y2O3:3%Er, Sc2O3:3%Er) and one fluoride (YF3:5%Er). The spectroscopic study offers a comprehensive comparison of their multicolor emissions, ranging from the visible to the mid-infrared region. Emissions from the first five excited states are presented and the emission cross sections of the 4I11/2 → 4I15/2, 4I11/2 → 4I13/2, and 4I13/2 → 4I15/2 transitions have been calculated and compared with literature results for the oxide compounds providing a confirmation for the 1.5 emission of Er:Y2O3, a correction over published values for the 2.7 μm emission of Er:Y2O3, and also new results for the Er:Sc2O3 emission cross section values of all the infrared bands. Moreover, this study explores the application of the 4I13/2 emission for in-band luminescence thermometry within the third biological window. An optimized segmentation of the 1.5 μm emission permits to achieve high relative and absolute sensitivities using just one dopant ion.
T2  - Journal of Luminescence
T1  - In-band luminescence thermometry in the third biological window and multicolor emission of Er-doped fluoride and oxide nanoparticles
VL  - 269
SP  - 120520
DO  - 10.1016/j.jlumin.2024.120520
ER  - 

@article{
author = "Gennari, F. and Periša, Jovana and Sekulić, Milica and Antić, Željka and Dramićanin, Miroslav and Toncelli, A.",
year = "2024",
abstract = "In this study we present a morphological and spectroscopical characterization of three different erbium doped nanocrystal samples, namely two oxides (Y2O3:3%Er, Sc2O3:3%Er) and one fluoride (YF3:5%Er). The spectroscopic study offers a comprehensive comparison of their multicolor emissions, ranging from the visible to the mid-infrared region. Emissions from the first five excited states are presented and the emission cross sections of the 4I11/2 → 4I15/2, 4I11/2 → 4I13/2, and 4I13/2 → 4I15/2 transitions have been calculated and compared with literature results for the oxide compounds providing a confirmation for the 1.5 emission of Er:Y2O3, a correction over published values for the 2.7 μm emission of Er:Y2O3, and also new results for the Er:Sc2O3 emission cross section values of all the infrared bands. Moreover, this study explores the application of the 4I13/2 emission for in-band luminescence thermometry within the third biological window. An optimized segmentation of the 1.5 μm emission permits to achieve high relative and absolute sensitivities using just one dopant ion.",
journal = "Journal of Luminescence",
title = "In-band luminescence thermometry in the third biological window and multicolor emission of Er-doped fluoride and oxide nanoparticles",
volume = "269",
pages = "120520",
doi = "10.1016/j.jlumin.2024.120520"
}

Gennari, F., Periša, J., Sekulić, M., Antić, Ž., Dramićanin, M.,& Toncelli, A.. (2024). In-band luminescence thermometry in the third biological window and multicolor emission of Er-doped fluoride and oxide nanoparticles. in Journal of Luminescence, 269, 120520.
https://doi.org/10.1016/j.jlumin.2024.120520

Gennari F, Periša J, Sekulić M, Antić Ž, Dramićanin M, Toncelli A. In-band luminescence thermometry in the third biological window and multicolor emission of Er-doped fluoride and oxide nanoparticles. in Journal of Luminescence. 2024;269:120520.
doi:10.1016/j.jlumin.2024.120520 .

Gennari, F., Periša, Jovana, Sekulić, Milica, Antić, Željka, Dramićanin, Miroslav, Toncelli, A., "In-band luminescence thermometry in the third biological window and multicolor emission of Er-doped fluoride and oxide nanoparticles" in Journal of Luminescence, 269 (2024):120520,
https://doi.org/10.1016/j.jlumin.2024.120520 . .

TY  - JOUR
AU  - Đačanin Far, Ljubica
AU  - Ćirić, Aleksandar
AU  - Sekulić, Milica
AU  - Periša, Jovana
AU  - Ristić, Zoran
AU  - Antić, Željka
AU  - Dramićanin, Miroslav
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10551
AB  - YNbO4:xEu3+ powders (0.1, 0.25, 0.5, 0.75, 1, 3, 5, 7.5, 10, 15, 20 mol %) were synthesized by a solid-state reaction, after homogenization in a vibrational mill. All the samples crystallize in a monoclinic Fergusonite-beta-(Y) structure (C2/c space group), with 45–65 nm crystallite sizes and show a strong orange/red luminescence with 5D0 excited state lifetimes of around 0.6 ms. Photoluminescence emission spectra showed no concentration quenching within the examined concentration range. Judd–Ofelt intensity parameters show a slight increase with rising concentration, up to Ω2 = 8.13∙10−20 cm2, Ω4 = 2.67∙10−20 cm2, and Ω6 is concentration invariant with the 0.35∙10−20 cm2 value. Emission lifetimes of the 5D0 state are almost constant with ∼0.6 ms, and a slight decrease is observed with the highest concentrations. The intrinsic quantum yield of all the samples is about 0.5.
T2  - Optik
T1  - Judd-Ofelt description of radiative properties of YNbO4 activated with different Eu3+ concentrations
VL  - 272
SP  - 170398
DO  - 10.1016/j.ijleo.2022.170398
ER  - 

@article{
author = "Đačanin Far, Ljubica and Ćirić, Aleksandar and Sekulić, Milica and Periša, Jovana and Ristić, Zoran and Antić, Željka and Dramićanin, Miroslav",
year = "2023",
abstract = "YNbO4:xEu3+ powders (0.1, 0.25, 0.5, 0.75, 1, 3, 5, 7.5, 10, 15, 20 mol %) were synthesized by a solid-state reaction, after homogenization in a vibrational mill. All the samples crystallize in a monoclinic Fergusonite-beta-(Y) structure (C2/c space group), with 45–65 nm crystallite sizes and show a strong orange/red luminescence with 5D0 excited state lifetimes of around 0.6 ms. Photoluminescence emission spectra showed no concentration quenching within the examined concentration range. Judd–Ofelt intensity parameters show a slight increase with rising concentration, up to Ω2 = 8.13∙10−20 cm2, Ω4 = 2.67∙10−20 cm2, and Ω6 is concentration invariant with the 0.35∙10−20 cm2 value. Emission lifetimes of the 5D0 state are almost constant with ∼0.6 ms, and a slight decrease is observed with the highest concentrations. The intrinsic quantum yield of all the samples is about 0.5.",
journal = "Optik",
title = "Judd-Ofelt description of radiative properties of YNbO4 activated with different Eu3+ concentrations",
volume = "272",
pages = "170398",
doi = "10.1016/j.ijleo.2022.170398"
}

Đačanin Far, L., Ćirić, A., Sekulić, M., Periša, J., Ristić, Z., Antić, Ž.,& Dramićanin, M.. (2023). Judd-Ofelt description of radiative properties of YNbO4 activated with different Eu3+ concentrations. in Optik, 272, 170398.
https://doi.org/10.1016/j.ijleo.2022.170398

Đačanin Far L, Ćirić A, Sekulić M, Periša J, Ristić Z, Antić Ž, Dramićanin M. Judd-Ofelt description of radiative properties of YNbO4 activated with different Eu3+ concentrations. in Optik. 2023;272:170398.
doi:10.1016/j.ijleo.2022.170398 .

Đačanin Far, Ljubica, Ćirić, Aleksandar, Sekulić, Milica, Periša, Jovana, Ristić, Zoran, Antić, Željka, Dramićanin, Miroslav, "Judd-Ofelt description of radiative properties of YNbO4 activated with different Eu3+ concentrations" in Optik, 272 (2023):170398,
https://doi.org/10.1016/j.ijleo.2022.170398 . .

TY  - JOUR
AU  - Antić, Željka
AU  - Ćirić, Aleksandar
AU  - Sekulić, Milica
AU  - Periša, Jovana
AU  - Milićević, Bojana
AU  - Alodhayb, Abdullah N.
AU  - Alrebdi, Tahani A.
AU  - Dramićanin, Miroslav
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11216
AB  - The sensitivity of luminescent Boltzmann thermometers is restricted by the energy difference between the thermally coupled excitement levels of trivalent lanthanides, and their values further decrease with increases in temperature, rendering their use at high temperatures difficult. Here, we demonstrate how to overcome this sensitivity limitation by employing multiparameter and multilevel cascade temperature readings. For this purpose, we synthesized Dy3+:Y2SiO5, a phosphor whose emission is known to begin quenching at very high temperatures. Its photoluminescence-emission features, later used for thermometry, consisted of two blue emission bands centered around 486 nm and 458 nm, and two bands centered around 430 nm and 398 nm, which were only visible at elevated temperatures. Next, we performed thermometry using the standard luminescence-intensity ratio (LIR) method, which employs the 4F9/2 and 4I15/2 Dy3+ levels’ emissions and the multilevel cascade method, which additionally uses the 4G11/2 level and overlapping intensities of 4I13/2, 4M21/2, 4K17/2, and 4F7/2 levels to create two LIRs with a larger energy difference than the standard LIR. This approach yielded a sensitivity that was 3.14 times greater than the standard method. Finally, we simultaneously exploited all the LIRs in the multiparameter temperature readings and found a relative sensitivity that was 30 times greater than that of the standard approach.
T2  - Crystals
T1  - Thirty-Fold Increase in Relative Sensitivity of Dy3+ Luminescent Boltzmann Thermometers Using Multiparameter and Multilevel Cascade Temperature Readings
VL  - 13
IS  - 6
SP  - 884
DO  - 10.3390/cryst13060884
ER  - 

@article{
author = "Antić, Željka and Ćirić, Aleksandar and Sekulić, Milica and Periša, Jovana and Milićević, Bojana and Alodhayb, Abdullah N. and Alrebdi, Tahani A. and Dramićanin, Miroslav",
year = "2023",
abstract = "The sensitivity of luminescent Boltzmann thermometers is restricted by the energy difference between the thermally coupled excitement levels of trivalent lanthanides, and their values further decrease with increases in temperature, rendering their use at high temperatures difficult. Here, we demonstrate how to overcome this sensitivity limitation by employing multiparameter and multilevel cascade temperature readings. For this purpose, we synthesized Dy3+:Y2SiO5, a phosphor whose emission is known to begin quenching at very high temperatures. Its photoluminescence-emission features, later used for thermometry, consisted of two blue emission bands centered around 486 nm and 458 nm, and two bands centered around 430 nm and 398 nm, which were only visible at elevated temperatures. Next, we performed thermometry using the standard luminescence-intensity ratio (LIR) method, which employs the 4F9/2 and 4I15/2 Dy3+ levels’ emissions and the multilevel cascade method, which additionally uses the 4G11/2 level and overlapping intensities of 4I13/2, 4M21/2, 4K17/2, and 4F7/2 levels to create two LIRs with a larger energy difference than the standard LIR. This approach yielded a sensitivity that was 3.14 times greater than the standard method. Finally, we simultaneously exploited all the LIRs in the multiparameter temperature readings and found a relative sensitivity that was 30 times greater than that of the standard approach.",
journal = "Crystals",
title = "Thirty-Fold Increase in Relative Sensitivity of Dy3+ Luminescent Boltzmann Thermometers Using Multiparameter and Multilevel Cascade Temperature Readings",
volume = "13",
number = "6",
pages = "884",
doi = "10.3390/cryst13060884"
}

Antić, Ž., Ćirić, A., Sekulić, M., Periša, J., Milićević, B., Alodhayb, A. N., Alrebdi, T. A.,& Dramićanin, M.. (2023). Thirty-Fold Increase in Relative Sensitivity of Dy3+ Luminescent Boltzmann Thermometers Using Multiparameter and Multilevel Cascade Temperature Readings. in Crystals, 13(6), 884.
https://doi.org/10.3390/cryst13060884

Antić Ž, Ćirić A, Sekulić M, Periša J, Milićević B, Alodhayb AN, Alrebdi TA, Dramićanin M. Thirty-Fold Increase in Relative Sensitivity of Dy3+ Luminescent Boltzmann Thermometers Using Multiparameter and Multilevel Cascade Temperature Readings. in Crystals. 2023;13(6):884.
doi:10.3390/cryst13060884 .

Antić, Željka, Ćirić, Aleksandar, Sekulić, Milica, Periša, Jovana, Milićević, Bojana, Alodhayb, Abdullah N., Alrebdi, Tahani A., Dramićanin, Miroslav, "Thirty-Fold Increase in Relative Sensitivity of Dy3+ Luminescent Boltzmann Thermometers Using Multiparameter and Multilevel Cascade Temperature Readings" in Crystals, 13, no. 6 (2023):884,
https://doi.org/10.3390/cryst13060884 . .

TY  - JOUR
AU  - Antić, Željka
AU  - Maričić, Milica
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12282
AB  - Materials matter: any breakthrough that changes society owes its success to the molecular building blocks used to create it. Advanced materials are essential to economic security and human well-being, with applications in industries aimed at addressing challenges in clean energy, national security, and human welfare. Therefore, speeding up the pace of development and implementation of advanced material systems is critical for achieving global competetiveness in the 21st century. In recent decades, significant progress has been evident in the processing and properties of materials intended for use in various biotechnologies, biomedicine, and dentistry. This volume specifically introduces new materials based on natural and synthetic substances with improved properties relevant to applications in biomedicine and biotechnologies.
AB  - Materijali su važni: svaki napredak koji menja društvo duguje svoj uspeh molekularnim gradivnim blokovima koji se koriste za njegovo stvaranje. Napredni materijali su od suštinskog značaja za ekonomsku bezbednost i ljudsko blagostanje, sa primenom u industrijama usmerenim na rešavanje izazova u pogledu čiste energije, nacionalne bezbednosti i ljudskog blagostanja. Stoga je ubrzanje tempa razvoja i implementacije naprednih materijalnih sistema kritično za postizanje globalne konkurentnosti u 21. veku. Poslednjih decenija evidentan je značajan napredak u obradi i svojstvima materijala namenjenih upotrebi u različitim biotehnologijama, biomedicini i stomatologiji. Ova tematska sveska posebno predstavlja nove materijale zasnovane na prirodnim i sintetičkim supstancama sa poboljšanim svojstvima relevantnim za primenu u biomedicini i biotehnologiji.
T2  - Hemijska industrija
T1  - Advanced materials application in biotechnologies and biomedicine
T1  - Primena naprednih materijala u biotehnologijama
VL  - 77
IS  - 4
SP  - 231
EP  - 233
DO  - 10.2298/HEMIND231211030A
ER  - 

@article{
author = "Antić, Željka and Maričić, Milica",
year = "2023",
abstract = "Materials matter: any breakthrough that changes society owes its success to the molecular building blocks used to create it. Advanced materials are essential to economic security and human well-being, with applications in industries aimed at addressing challenges in clean energy, national security, and human welfare. Therefore, speeding up the pace of development and implementation of advanced material systems is critical for achieving global competetiveness in the 21st century. In recent decades, significant progress has been evident in the processing and properties of materials intended for use in various biotechnologies, biomedicine, and dentistry. This volume specifically introduces new materials based on natural and synthetic substances with improved properties relevant to applications in biomedicine and biotechnologies., Materijali su važni: svaki napredak koji menja društvo duguje svoj uspeh molekularnim gradivnim blokovima koji se koriste za njegovo stvaranje. Napredni materijali su od suštinskog značaja za ekonomsku bezbednost i ljudsko blagostanje, sa primenom u industrijama usmerenim na rešavanje izazova u pogledu čiste energije, nacionalne bezbednosti i ljudskog blagostanja. Stoga je ubrzanje tempa razvoja i implementacije naprednih materijalnih sistema kritično za postizanje globalne konkurentnosti u 21. veku. Poslednjih decenija evidentan je značajan napredak u obradi i svojstvima materijala namenjenih upotrebi u različitim biotehnologijama, biomedicini i stomatologiji. Ova tematska sveska posebno predstavlja nove materijale zasnovane na prirodnim i sintetičkim supstancama sa poboljšanim svojstvima relevantnim za primenu u biomedicini i biotehnologiji.",
journal = "Hemijska industrija",
title = "Advanced materials application in biotechnologies and biomedicine, Primena naprednih materijala u biotehnologijama",
volume = "77",
number = "4",
pages = "231-233",
doi = "10.2298/HEMIND231211030A"
}

Antić, Ž.,& Maričić, M.. (2023). Advanced materials application in biotechnologies and biomedicine. in Hemijska industrija, 77(4), 231-233.
https://doi.org/10.2298/HEMIND231211030A

Antić Ž, Maričić M. Advanced materials application in biotechnologies and biomedicine. in Hemijska industrija. 2023;77(4):231-233.
doi:10.2298/HEMIND231211030A .

Antić, Željka, Maričić, Milica, "Advanced materials application in biotechnologies and biomedicine" in Hemijska industrija, 77, no. 4 (2023):231-233,
https://doi.org/10.2298/HEMIND231211030A . .

TY  - CONF
AU  - Trpkov, Đorđe
AU  - Danilović, Danijela
AU  - Pajović, Jelena
AU  - Dojčilović, Radovan
AU  - Pavlović, V. B.
AU  - Sekulić, Milica
AU  - Božanić, Dušan K.
AU  - Đoković, Vladimir
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10823
AB  - We report on hydrothermal synthesis of zinc oxide (ZnO) hexagonal microrods and microtubes. Zinc oxide seeds were deposited onto glass slides by dip coating and used as templates for hydrothermal growth of ZnO microcrystals. The process was carried out in an alkaline reaction medium with acetate and nitrate zinc precursors, using hexamethylene tetramine (HMT) as surfactant. The obtained ZnO microrods were successfully decorated with silver particles via dipping ZnO-containing glass slides in silver nitrate solution and subsequent UV irradiation (5 min). Zinc oxide and Ag/ZnO microparticles were characterized by SEM, EDS and XRD. The presented results are part of the larger concept of developing of anisotropic Ag/ZnO microrods for conversion of chemical to mechanical energy.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 10th Serbian Ceramic Society Conference : program and the book of abstracts; September 26-27, 2022; Belgrade
T1  - Fabrication of silver-decorated zinc oxide microrods by hydrothermal method
SP  - 83
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10823
ER  - 

@conference{
author = "Trpkov, Đorđe and Danilović, Danijela and Pajović, Jelena and Dojčilović, Radovan and Pavlović, V. B. and Sekulić, Milica and Božanić, Dušan K. and Đoković, Vladimir",
year = "2022",
abstract = "We report on hydrothermal synthesis of zinc oxide (ZnO) hexagonal microrods and microtubes. Zinc oxide seeds were deposited onto glass slides by dip coating and used as templates for hydrothermal growth of ZnO microcrystals. The process was carried out in an alkaline reaction medium with acetate and nitrate zinc precursors, using hexamethylene tetramine (HMT) as surfactant. The obtained ZnO microrods were successfully decorated with silver particles via dipping ZnO-containing glass slides in silver nitrate solution and subsequent UV irradiation (5 min). Zinc oxide and Ag/ZnO microparticles were characterized by SEM, EDS and XRD. The presented results are part of the larger concept of developing of anisotropic Ag/ZnO microrods for conversion of chemical to mechanical energy.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 10th Serbian Ceramic Society Conference : program and the book of abstracts; September 26-27, 2022; Belgrade",
title = "Fabrication of silver-decorated zinc oxide microrods by hydrothermal method",
pages = "83",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10823"
}

Trpkov, Đ., Danilović, D., Pajović, J., Dojčilović, R., Pavlović, V. B., Sekulić, M., Božanić, D. K.,& Đoković, V.. (2022). Fabrication of silver-decorated zinc oxide microrods by hydrothermal method. in Advanced Ceramics and Application : 10th Serbian Ceramic Society Conference : program and the book of abstracts; September 26-27, 2022; Belgrade
Belgrade : Serbian Ceramic Society., 83.
https://hdl.handle.net/21.15107/rcub_vinar_10823

Trpkov Đ, Danilović D, Pajović J, Dojčilović R, Pavlović VB, Sekulić M, Božanić DK, Đoković V. Fabrication of silver-decorated zinc oxide microrods by hydrothermal method. in Advanced Ceramics and Application : 10th Serbian Ceramic Society Conference : program and the book of abstracts; September 26-27, 2022; Belgrade. 2022;:83.
https://hdl.handle.net/21.15107/rcub_vinar_10823 .

Trpkov, Đorđe, Danilović, Danijela, Pajović, Jelena, Dojčilović, Radovan, Pavlović, V. B., Sekulić, Milica, Božanić, Dušan K., Đoković, Vladimir, "Fabrication of silver-decorated zinc oxide microrods by hydrothermal method" in Advanced Ceramics and Application : 10th Serbian Ceramic Society Conference : program and the book of abstracts; September 26-27, 2022; Belgrade (2022):83,
https://hdl.handle.net/21.15107/rcub_vinar_10823 .

TY  - JOUR
AU  - Gennari, Fulvia
AU  - Sekulić, Milica
AU  - Barudžija, Tanja
AU  - Antić, Željka
AU  - Dramićanin, Miroslav
AU  - Toncelli, Alessandra
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10413
AB  - Lanthanide ions possess various emission channels in the near-infrared region that are well known in bulk crystals but are far less studied in samples with nanometric size. In this work, we present the infrared spectroscopic characterization of various Nd-doped fluoride and sesquioxide nanocrystals, namely Nd:Y2O3, Nd:Lu2O3, Nd:Sc2O3, Nd:YF3, and Nd:LuF3. Emissions from the three main emission bands in the near-infrared region have been observed and the emission cross-sections have been calculated. Moreover, another decay channel at around 2 μm has been observed and ascribed to the 4F3/2→4I15/2 transition. The lifetime of the 4F3/2 level has been measured under LED pumping. Emission cross-sections for the various compounds are calculated in the 1 μm, 900 nm, and 1.3 μm regions and are of the order of 10−20 cm2 in agreement with the literature results. Those in the 2 μm region are of the order of 10−21 cm2.
T2  - Crystals
T1  - Infrared Photoluminescence of Nd-Doped Sesquioxide and Fluoride Nanocrystals: A Comparative Study
VL  - 12
IS  - 8
SP  - 1071
DO  - 10.3390/cryst12081071
ER  - 

@article{
author = "Gennari, Fulvia and Sekulić, Milica and Barudžija, Tanja and Antić, Željka and Dramićanin, Miroslav and Toncelli, Alessandra",
year = "2022",
abstract = "Lanthanide ions possess various emission channels in the near-infrared region that are well known in bulk crystals but are far less studied in samples with nanometric size. In this work, we present the infrared spectroscopic characterization of various Nd-doped fluoride and sesquioxide nanocrystals, namely Nd:Y2O3, Nd:Lu2O3, Nd:Sc2O3, Nd:YF3, and Nd:LuF3. Emissions from the three main emission bands in the near-infrared region have been observed and the emission cross-sections have been calculated. Moreover, another decay channel at around 2 μm has been observed and ascribed to the 4F3/2→4I15/2 transition. The lifetime of the 4F3/2 level has been measured under LED pumping. Emission cross-sections for the various compounds are calculated in the 1 μm, 900 nm, and 1.3 μm regions and are of the order of 10−20 cm2 in agreement with the literature results. Those in the 2 μm region are of the order of 10−21 cm2.",
journal = "Crystals",
title = "Infrared Photoluminescence of Nd-Doped Sesquioxide and Fluoride Nanocrystals: A Comparative Study",
volume = "12",
number = "8",
pages = "1071",
doi = "10.3390/cryst12081071"
}

Gennari, F., Sekulić, M., Barudžija, T., Antić, Ž., Dramićanin, M.,& Toncelli, A.. (2022). Infrared Photoluminescence of Nd-Doped Sesquioxide and Fluoride Nanocrystals: A Comparative Study. in Crystals, 12(8), 1071.
https://doi.org/10.3390/cryst12081071

Gennari F, Sekulić M, Barudžija T, Antić Ž, Dramićanin M, Toncelli A. Infrared Photoluminescence of Nd-Doped Sesquioxide and Fluoride Nanocrystals: A Comparative Study. in Crystals. 2022;12(8):1071.
doi:10.3390/cryst12081071 .

Gennari, Fulvia, Sekulić, Milica, Barudžija, Tanja, Antić, Željka, Dramićanin, Miroslav, Toncelli, Alessandra, "Infrared Photoluminescence of Nd-Doped Sesquioxide and Fluoride Nanocrystals: A Comparative Study" in Crystals, 12, no. 8 (2022):1071,
https://doi.org/10.3390/cryst12081071 . .

TY  - JOUR
AU  - Sekulić, Milica
AU  - Dramićanin, Tatjana
AU  - Ćirić, Aleksandar
AU  - Đačanin Far, Ljubica
AU  - Dramićanin, Miroslav
AU  - Đorđević, Vesna R.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10238
AB  - Eu3+-doped YxLu1−xNbO4 (x = 0, 0.25, 0.5, 0.75, 1) were prepared by the solid-state reaction method. YNbO4:Eu3+ and LuNbO4:Eu3+ crystallize as beta-Fergusonite (SG no. 15) in 1–10 μm diameter particles. Photoluminescence emission spectra show a slight linear variation of emission energies and intensities with the solid-solution composition in terms of Y/Lu content. The energy difference between Stark sublevels of 5D0→7F1 emission increases, while the asymmetry ratio decreases with the composition. From the dispersion relations of pure YNbO4 and LuNbO4, the refractive index values for each concentration and emission wavelength are estimated. The Ω2 Judd–Ofelt parameter shows a linear increase from 6.75 to 7.48 × 10−20 cm2 from x = 0 to 1, respectively, and Ω4 from 2.69 to 2.95 × 10−20 cm2. The lowest non-radiative deexcitation rate was observed with x = 1, and thus LuNbO4:Eu3+ is more efficient phosphor than YNbO4:Eu3+.
T2  - Crystals
T1  - Photoluminescence of the Eu3+-Activated YxLu1−xNbO4 (x = 0, 0.25, 0.5, 0.75, 1) Solid-Solution Phosphors
VL  - 12
IS  - 3
SP  - 427
DO  - 10.3390/cryst12030427
ER  - 

@article{
author = "Sekulić, Milica and Dramićanin, Tatjana and Ćirić, Aleksandar and Đačanin Far, Ljubica and Dramićanin, Miroslav and Đorđević, Vesna R.",
year = "2022",
abstract = "Eu3+-doped YxLu1−xNbO4 (x = 0, 0.25, 0.5, 0.75, 1) were prepared by the solid-state reaction method. YNbO4:Eu3+ and LuNbO4:Eu3+ crystallize as beta-Fergusonite (SG no. 15) in 1–10 μm diameter particles. Photoluminescence emission spectra show a slight linear variation of emission energies and intensities with the solid-solution composition in terms of Y/Lu content. The energy difference between Stark sublevels of 5D0→7F1 emission increases, while the asymmetry ratio decreases with the composition. From the dispersion relations of pure YNbO4 and LuNbO4, the refractive index values for each concentration and emission wavelength are estimated. The Ω2 Judd–Ofelt parameter shows a linear increase from 6.75 to 7.48 × 10−20 cm2 from x = 0 to 1, respectively, and Ω4 from 2.69 to 2.95 × 10−20 cm2. The lowest non-radiative deexcitation rate was observed with x = 1, and thus LuNbO4:Eu3+ is more efficient phosphor than YNbO4:Eu3+.",
journal = "Crystals",
title = "Photoluminescence of the Eu3+-Activated YxLu1−xNbO4 (x = 0, 0.25, 0.5, 0.75, 1) Solid-Solution Phosphors",
volume = "12",
number = "3",
pages = "427",
doi = "10.3390/cryst12030427"
}

Sekulić, M., Dramićanin, T., Ćirić, A., Đačanin Far, L., Dramićanin, M.,& Đorđević, V. R.. (2022). Photoluminescence of the Eu3+-Activated YxLu1−xNbO4 (x = 0, 0.25, 0.5, 0.75, 1) Solid-Solution Phosphors. in Crystals, 12(3), 427.
https://doi.org/10.3390/cryst12030427

Sekulić M, Dramićanin T, Ćirić A, Đačanin Far L, Dramićanin M, Đorđević VR. Photoluminescence of the Eu3+-Activated YxLu1−xNbO4 (x = 0, 0.25, 0.5, 0.75, 1) Solid-Solution Phosphors. in Crystals. 2022;12(3):427.
doi:10.3390/cryst12030427 .

Sekulić, Milica, Dramićanin, Tatjana, Ćirić, Aleksandar, Đačanin Far, Ljubica, Dramićanin, Miroslav, Đorđević, Vesna R., "Photoluminescence of the Eu3+-Activated YxLu1−xNbO4 (x = 0, 0.25, 0.5, 0.75, 1) Solid-Solution Phosphors" in Crystals, 12, no. 3 (2022):427,
https://doi.org/10.3390/cryst12030427 . .

TY  - JOUR
AU  - Periša, Jovana
AU  - Ćirić, Aleksandar
AU  - Zeković, Ivana
AU  - Đorđević, Vesna
AU  - Sekulić, Milica
AU  - Antić, Željka
AU  - Dramićanin, Miroslav
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10481
AB  - The sensitivity of luminescence thermometry is enhanced at high temperatures when using a three-level luminescence intensity ratio approach with Dy3+- activated yttrium aluminum perovskite. This material was synthesized via the Pechini method, and the structure was verified using X-ray diffraction analysis. The average crystallite size was calculated to be around 46 nm. The morphology was examined using scanning electron microscopy, which showed agglomerates composed of densely packed, elongated spherical particles, the majority of which were 80–100 nm in size. The temperature-dependent photoluminescence emission spectra (ex = 353 nm, 300–850 K) included Dy3+ emissions in blue (458 nm), blue (483 nm), and violet (430 nm, T 600 K). Luminescence intensity ratio, the most utilized temperature readout method in luminescent thermometry, was used as the testing method: a) using the intensity ratio of Dy3+ ions and 4I15/2→6H15/2/4F9/2→6H15/2 transitions; and b) employing the third, higher energy 4G11/2 thermalized level, i.e., using the intensity ratio of 4G11/2→6H15/2/4F9/2→6H15/2 transitions, thereby showing the relative sensitivities of 0.41% K−1 and 0.86% K−1 at 600 K, respectively. This more than doubles the increase in sensitivity and therefore demonstrates the method’s usability at high temperatures, although the major limitation of the method is the chemical stability of the host material and the temperature at which the temperature quenching commences. Lastly, it must be noted that at 850 K, the emission intensities from the energetically higher levels were still increasing in YAP: Dy3+.
T2  - Sensors
T1  - Exploiting High-Energy Emissions of YAlO3:Dy3+ for Sensitivity Improvement of Ratiometric Luminescence Thermometry
VL  - 22
IS  - 20
SP  - 7997
DO  - 10.3390/s22207997
ER  - 

@article{
author = "Periša, Jovana and Ćirić, Aleksandar and Zeković, Ivana and Đorđević, Vesna and Sekulić, Milica and Antić, Željka and Dramićanin, Miroslav",
year = "2022",
abstract = "The sensitivity of luminescence thermometry is enhanced at high temperatures when using a three-level luminescence intensity ratio approach with Dy3+- activated yttrium aluminum perovskite. This material was synthesized via the Pechini method, and the structure was verified using X-ray diffraction analysis. The average crystallite size was calculated to be around 46 nm. The morphology was examined using scanning electron microscopy, which showed agglomerates composed of densely packed, elongated spherical particles, the majority of which were 80–100 nm in size. The temperature-dependent photoluminescence emission spectra (ex = 353 nm, 300–850 K) included Dy3+ emissions in blue (458 nm), blue (483 nm), and violet (430 nm, T 600 K). Luminescence intensity ratio, the most utilized temperature readout method in luminescent thermometry, was used as the testing method: a) using the intensity ratio of Dy3+ ions and 4I15/2→6H15/2/4F9/2→6H15/2 transitions; and b) employing the third, higher energy 4G11/2 thermalized level, i.e., using the intensity ratio of 4G11/2→6H15/2/4F9/2→6H15/2 transitions, thereby showing the relative sensitivities of 0.41% K−1 and 0.86% K−1 at 600 K, respectively. This more than doubles the increase in sensitivity and therefore demonstrates the method’s usability at high temperatures, although the major limitation of the method is the chemical stability of the host material and the temperature at which the temperature quenching commences. Lastly, it must be noted that at 850 K, the emission intensities from the energetically higher levels were still increasing in YAP: Dy3+.",
journal = "Sensors",
title = "Exploiting High-Energy Emissions of YAlO3:Dy3+ for Sensitivity Improvement of Ratiometric Luminescence Thermometry",
volume = "22",
number = "20",
pages = "7997",
doi = "10.3390/s22207997"
}

Periša, J., Ćirić, A., Zeković, I., Đorđević, V., Sekulić, M., Antić, Ž.,& Dramićanin, M.. (2022). Exploiting High-Energy Emissions of YAlO3:Dy3+ for Sensitivity Improvement of Ratiometric Luminescence Thermometry. in Sensors, 22(20), 7997.
https://doi.org/10.3390/s22207997

Periša J, Ćirić A, Zeković I, Đorđević V, Sekulić M, Antić Ž, Dramićanin M. Exploiting High-Energy Emissions of YAlO3:Dy3+ for Sensitivity Improvement of Ratiometric Luminescence Thermometry. in Sensors. 2022;22(20):7997.
doi:10.3390/s22207997 .

Periša, Jovana, Ćirić, Aleksandar, Zeković, Ivana, Đorđević, Vesna, Sekulić, Milica, Antić, Željka, Dramićanin, Miroslav, "Exploiting High-Energy Emissions of YAlO3:Dy3+ for Sensitivity Improvement of Ratiometric Luminescence Thermometry" in Sensors, 22, no. 20 (2022):7997,
https://doi.org/10.3390/s22207997 . .

TY  - CONF
AU  - Sekulić, Milica
AU  - Đačanin Far, Ljubica
AU  - Dramićanin, Tatjana
AU  - Ćirić, Aleksandar
AU  - Dramićanin, Miroslav
AU  - Đorđević, Vesna
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11341
AB  - Lanthanide (Ln) activated phosphors are a major topic in both basic and applied science. The trivalent europium ion (Eu3+) is well recognized for its intense luminescence in the orange/red spectral region, making it useful for a wide range of applications. Because Eu3+ has an even number of electrons in its 4f shell ([Xe]4f 6 ), the ion has non-degenerated ground (7F0) and excited (5D0) energy states, as well as non-overlapping 2S+1LJ multiplets, resulting in emission spectra that are predictable in relation to the host material site symmetry. The solid-state reaction synthesis method was used to make a set of five Eu-doped YxLu1- xNbO4 samples (x=0–1) with a fixed Eu concentration (5%). All the structures crystallize as beta-Fergusonite, in which the Eu ion replaces the Y or Lu ion in a large, low-symmetry octahedron. The excitation and emission spectra of the Eu3+ ion in all composition hosts show characteristic f-f transitions from which Stark energy levels were calculated. Specific features and energy positions of the distinctive 5D0→7F1 magnetic dipole transition were determined when measured with higher resolution and spectra deconvolution was utilized. The maximum ΔE splitting of the 7F1 manifold's Stark splitting and the asymmetry ratio R all show Y/Lu content-dependent trends. Calculations based on Judd-Ofelt theory were utilized to determine specific quantities. The lowest non-radiative deexcitation rate was observed with x = 1, resulting in the conclusion that LuNbO4 is a better host-matrix for Eu3+ emission than other compositions.
PB  - Society for science development of Serbia, Belgrade
C3  - The 6th International Conference on the Physics of Optical Materials and Devices & The 5th International Workshop of Persistent and Photostimulable Phosphors
T1  - Photoluminescent Properties of the Eu3+ ion in YNbO4-LuNbO4 Solid Solution
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11341
ER  - 

@conference{
author = "Sekulić, Milica and Đačanin Far, Ljubica and Dramićanin, Tatjana and Ćirić, Aleksandar and Dramićanin, Miroslav and Đorđević, Vesna",
year = "2022",
abstract = "Lanthanide (Ln) activated phosphors are a major topic in both basic and applied science. The trivalent europium ion (Eu3+) is well recognized for its intense luminescence in the orange/red spectral region, making it useful for a wide range of applications. Because Eu3+ has an even number of electrons in its 4f shell ([Xe]4f 6 ), the ion has non-degenerated ground (7F0) and excited (5D0) energy states, as well as non-overlapping 2S+1LJ multiplets, resulting in emission spectra that are predictable in relation to the host material site symmetry. The solid-state reaction synthesis method was used to make a set of five Eu-doped YxLu1- xNbO4 samples (x=0–1) with a fixed Eu concentration (5%). All the structures crystallize as beta-Fergusonite, in which the Eu ion replaces the Y or Lu ion in a large, low-symmetry octahedron. The excitation and emission spectra of the Eu3+ ion in all composition hosts show characteristic f-f transitions from which Stark energy levels were calculated. Specific features and energy positions of the distinctive 5D0→7F1 magnetic dipole transition were determined when measured with higher resolution and spectra deconvolution was utilized. The maximum ΔE splitting of the 7F1 manifold's Stark splitting and the asymmetry ratio R all show Y/Lu content-dependent trends. Calculations based on Judd-Ofelt theory were utilized to determine specific quantities. The lowest non-radiative deexcitation rate was observed with x = 1, resulting in the conclusion that LuNbO4 is a better host-matrix for Eu3+ emission than other compositions.",
publisher = "Society for science development of Serbia, Belgrade",
journal = "The 6th International Conference on the Physics of Optical Materials and Devices & The 5th International Workshop of Persistent and Photostimulable Phosphors",
title = "Photoluminescent Properties of the Eu3+ ion in YNbO4-LuNbO4 Solid Solution",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11341"
}

Sekulić, M., Đačanin Far, L., Dramićanin, T., Ćirić, A., Dramićanin, M.,& Đorđević, V.. (2022). Photoluminescent Properties of the Eu3+ ion in YNbO4-LuNbO4 Solid Solution. in The 6th International Conference on the Physics of Optical Materials and Devices & The 5th International Workshop of Persistent and Photostimulable Phosphors
Society for science development of Serbia, Belgrade..
https://hdl.handle.net/21.15107/rcub_vinar_11341

Sekulić M, Đačanin Far L, Dramićanin T, Ćirić A, Dramićanin M, Đorđević V. Photoluminescent Properties of the Eu3+ ion in YNbO4-LuNbO4 Solid Solution. in The 6th International Conference on the Physics of Optical Materials and Devices & The 5th International Workshop of Persistent and Photostimulable Phosphors. 2022;.
https://hdl.handle.net/21.15107/rcub_vinar_11341 .

Sekulić, Milica, Đačanin Far, Ljubica, Dramićanin, Tatjana, Ćirić, Aleksandar, Dramićanin, Miroslav, Đorđević, Vesna, "Photoluminescent Properties of the Eu3+ ion in YNbO4-LuNbO4 Solid Solution" in The 6th International Conference on the Physics of Optical Materials and Devices & The 5th International Workshop of Persistent and Photostimulable Phosphors (2022),
https://hdl.handle.net/21.15107/rcub_vinar_11341 .

TY  - JOUR
AU  - Jelić, Aleksandra
AU  - Sekulić, Milica
AU  - Travica, Milan
AU  - Gržetić, Jelena
AU  - Ugrinović, Vukašin
AU  - Marinković, Aleksandar D.
AU  - Božić, Aleksandra
AU  - Stamenović, Marina
AU  - Putić, Slaviša
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10237
AB  - In this study, silicate nanofillers; dicalcium silicate, magnesium silicate, tricalcium silicate, and wollastonite; were synthesized using four different methods and incorporated into the epoxy resin to improve its mechanical properties. Characterization of the newly synthesized nanofillers was performed using Fourier-transformation infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The purpose of this study was to analyze newly developed composite materials reinforced with silicate nanoparticles utilizing tensile testing and a full-field non-contact 3D Digital Image Correlation (DIC) method. Analysis of deformation and displacement fields gives precise material behavior during testing. Testing results allowed a more reliable assessment of the structural integrity of epoxy composite materials reinforced using different silicate nanofillers. It was concluded that the addition of 3% of dicalcium silicate, magnesium silicate, tricalcium silicate, and wollastonite lead to the increasement of tensile strength up to 31.5%, 29.0%, 27.5%, and 23.5% in comparison with neat epoxy, respectively. In order to offer more trustworthy information about the viscoelastic behavior of neat epoxy and composites, a dynamic mechanical analysis (DMA) was also performed and rheological measurements of uncured epoxy matrix and epoxy suspensions were obtained.
T2  - Polymers
T1  - Determination of Mechanical Properties of Epoxy Composite Materials Reinforced with Silicate Nanofillers Using Digital Image Correlation (DIC)
VL  - 14
IS  - 6
SP  - 1255
DO  - 10.3390/polym14061255
ER  - 

@article{
author = "Jelić, Aleksandra and Sekulić, Milica and Travica, Milan and Gržetić, Jelena and Ugrinović, Vukašin and Marinković, Aleksandar D. and Božić, Aleksandra and Stamenović, Marina and Putić, Slaviša",
year = "2022",
abstract = "In this study, silicate nanofillers; dicalcium silicate, magnesium silicate, tricalcium silicate, and wollastonite; were synthesized using four different methods and incorporated into the epoxy resin to improve its mechanical properties. Characterization of the newly synthesized nanofillers was performed using Fourier-transformation infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The purpose of this study was to analyze newly developed composite materials reinforced with silicate nanoparticles utilizing tensile testing and a full-field non-contact 3D Digital Image Correlation (DIC) method. Analysis of deformation and displacement fields gives precise material behavior during testing. Testing results allowed a more reliable assessment of the structural integrity of epoxy composite materials reinforced using different silicate nanofillers. It was concluded that the addition of 3% of dicalcium silicate, magnesium silicate, tricalcium silicate, and wollastonite lead to the increasement of tensile strength up to 31.5%, 29.0%, 27.5%, and 23.5% in comparison with neat epoxy, respectively. In order to offer more trustworthy information about the viscoelastic behavior of neat epoxy and composites, a dynamic mechanical analysis (DMA) was also performed and rheological measurements of uncured epoxy matrix and epoxy suspensions were obtained.",
journal = "Polymers",
title = "Determination of Mechanical Properties of Epoxy Composite Materials Reinforced with Silicate Nanofillers Using Digital Image Correlation (DIC)",
volume = "14",
number = "6",
pages = "1255",
doi = "10.3390/polym14061255"
}

Jelić, A., Sekulić, M., Travica, M., Gržetić, J., Ugrinović, V., Marinković, A. D., Božić, A., Stamenović, M.,& Putić, S.. (2022). Determination of Mechanical Properties of Epoxy Composite Materials Reinforced with Silicate Nanofillers Using Digital Image Correlation (DIC). in Polymers, 14(6), 1255.
https://doi.org/10.3390/polym14061255

Jelić A, Sekulić M, Travica M, Gržetić J, Ugrinović V, Marinković AD, Božić A, Stamenović M, Putić S. Determination of Mechanical Properties of Epoxy Composite Materials Reinforced with Silicate Nanofillers Using Digital Image Correlation (DIC). in Polymers. 2022;14(6):1255.
doi:10.3390/polym14061255 .

Jelić, Aleksandra, Sekulić, Milica, Travica, Milan, Gržetić, Jelena, Ugrinović, Vukašin, Marinković, Aleksandar D., Božić, Aleksandra, Stamenović, Marina, Putić, Slaviša, "Determination of Mechanical Properties of Epoxy Composite Materials Reinforced with Silicate Nanofillers Using Digital Image Correlation (DIC)" in Polymers, 14, no. 6 (2022):1255,
https://doi.org/10.3390/polym14061255 . .

TY  - JOUR
AU  - Jelić, Aleksandra
AU  - Marinković, Aleksandar D.
AU  - Sekulić, Milica
AU  - Dikić, Stefan
AU  - Ugrinović, Vukašin
AU  - Pavlović, Vladimir B.
AU  - Putić, Slaviša
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9562
AB  - In this study, halloysite nanotubes (HNT) were modified by: 3-glycidyloxypropyltrimethoxysilane (GLYMO), 3-aminopropyltrimethoxysilane (APTES), and 2,2-Bis[4-(glycidyloxy) phenyl] propane (DGEBA), and incorporated in the epoxy resin matrix to enhance its mechanical properties. The HNT/epoxy nanocomposite materials were prepared by mixing different ratios of untreated/treated HNT with neat epoxy resin. Characterization of untreated/treated HNT was performed by Fourier-transformation infrared (FTIR) spectroscopy, and X-ray diffraction (XRD). The quantity of grafted molecules and thermal stability of newly synthesized materials were determined by thermogravimetric (TG) and derivative thermogravimetric (DTG) analysis. Tensile properties of newly synthesized materials were compared, and scanning electron microscopy (SEM) and transmission electron microscopy (TEM) analysis of the fracture surfaces were performed. Incorporation of APTES modified HNT (HNTAPT) and two-step modification APTES followed by DGEBA (HNTAPTDG) has increased the tensile strength of the nanocomposite materials up to 72% and 61%, and strain at break up to 1082% and 1216%, respectively, compared to neat epoxy. It was concluded that the modification of HNT contributed to the enhancement of the dispersion and the cross-linking in the epoxy resin matrix. © 2021 Society of Plastics Engineers
T2  - Polymer Composites
T1  - Design of halloysite modification for improvement of mechanical properties of the epoxy based nanocomposites
VL  - 42
IS  - 5
SP  - 2180
EP  - 2192
DO  - 10.1002/pc.25967
ER  - 

@article{
author = "Jelić, Aleksandra and Marinković, Aleksandar D. and Sekulić, Milica and Dikić, Stefan and Ugrinović, Vukašin and Pavlović, Vladimir B. and Putić, Slaviša",
year = "2021",
abstract = "In this study, halloysite nanotubes (HNT) were modified by: 3-glycidyloxypropyltrimethoxysilane (GLYMO), 3-aminopropyltrimethoxysilane (APTES), and 2,2-Bis[4-(glycidyloxy) phenyl] propane (DGEBA), and incorporated in the epoxy resin matrix to enhance its mechanical properties. The HNT/epoxy nanocomposite materials were prepared by mixing different ratios of untreated/treated HNT with neat epoxy resin. Characterization of untreated/treated HNT was performed by Fourier-transformation infrared (FTIR) spectroscopy, and X-ray diffraction (XRD). The quantity of grafted molecules and thermal stability of newly synthesized materials were determined by thermogravimetric (TG) and derivative thermogravimetric (DTG) analysis. Tensile properties of newly synthesized materials were compared, and scanning electron microscopy (SEM) and transmission electron microscopy (TEM) analysis of the fracture surfaces were performed. Incorporation of APTES modified HNT (HNTAPT) and two-step modification APTES followed by DGEBA (HNTAPTDG) has increased the tensile strength of the nanocomposite materials up to 72% and 61%, and strain at break up to 1082% and 1216%, respectively, compared to neat epoxy. It was concluded that the modification of HNT contributed to the enhancement of the dispersion and the cross-linking in the epoxy resin matrix. © 2021 Society of Plastics Engineers",
journal = "Polymer Composites",
title = "Design of halloysite modification for improvement of mechanical properties of the epoxy based nanocomposites",
volume = "42",
number = "5",
pages = "2180-2192",
doi = "10.1002/pc.25967"
}

Jelić, A., Marinković, A. D., Sekulić, M., Dikić, S., Ugrinović, V., Pavlović, V. B.,& Putić, S.. (2021). Design of halloysite modification for improvement of mechanical properties of the epoxy based nanocomposites. in Polymer Composites, 42(5), 2180-2192.
https://doi.org/10.1002/pc.25967

Jelić A, Marinković AD, Sekulić M, Dikić S, Ugrinović V, Pavlović VB, Putić S. Design of halloysite modification for improvement of mechanical properties of the epoxy based nanocomposites. in Polymer Composites. 2021;42(5):2180-2192.
doi:10.1002/pc.25967 .

Jelić, Aleksandra, Marinković, Aleksandar D., Sekulić, Milica, Dikić, Stefan, Ugrinović, Vukašin, Pavlović, Vladimir B., Putić, Slaviša, "Design of halloysite modification for improvement of mechanical properties of the epoxy based nanocomposites" in Polymer Composites, 42, no. 5 (2021):2180-2192,
https://doi.org/10.1002/pc.25967 . .

TY  - JOUR
AU  - Ćirić, Aleksandar
AU  - Sekulić, Milica
AU  - Shah, Kevil
AU  - Chakrabarty, Bishwajit S.
AU  - Dramićanin, Miroslav
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9885
AB  - Upconversion sub-micron particles are one of the most perspective materials due to their wide application range, the most important being in the bio-medicinal field where they can be used for labeling, sensing, treatment or drug delivery. Chemically stable upconversion sub-micron particles of La2O2S co-doped with Yb3+/Ho3+ and Yb3+/Tm3+ were synthesized and characterized. Different concentrations of Yb3+/Ho3+ and Yb3+/Tm3+ were successfully incorporated into the hexagonal crystal structure of lanthanum oxysulfide using the optimized solution combustion synthesis method with urea as a fuel. Sub-micron particles of less than 50 nm in diameter showed the typical upconversion photoluminescence when exited by 980 nm laser. The highest PL intensities were obtained in La2O2S co-doped with 8 wt% Yb and 1.5 wt% Ho, or in case of La2O2S:Yb3+/Tm3+ with 4 wt% Yb and 0.5 wt% Tm. The CIE 1976 chromaticity coordinates of Ho3+ photoluminescence emission are (0.119, 0.581), with color purity of 98.7 %. The chromaticity of upconversion emission was invariant to doping concentrations.
T2  - Optical Materials
T1  - Upconversion photoluminescence of sub-micron lanthanum oxysulfide particles co-doped with Yb3+/Ho3+ and Yb3+/Tm3+ synthesized by optimized combustion technique
VL  - 120
SP  - 111417
DO  - 10.1016/j.optmat.2021.111417
ER  - 

@article{
author = "Ćirić, Aleksandar and Sekulić, Milica and Shah, Kevil and Chakrabarty, Bishwajit S. and Dramićanin, Miroslav",
year = "2021",
abstract = "Upconversion sub-micron particles are one of the most perspective materials due to their wide application range, the most important being in the bio-medicinal field where they can be used for labeling, sensing, treatment or drug delivery. Chemically stable upconversion sub-micron particles of La2O2S co-doped with Yb3+/Ho3+ and Yb3+/Tm3+ were synthesized and characterized. Different concentrations of Yb3+/Ho3+ and Yb3+/Tm3+ were successfully incorporated into the hexagonal crystal structure of lanthanum oxysulfide using the optimized solution combustion synthesis method with urea as a fuel. Sub-micron particles of less than 50 nm in diameter showed the typical upconversion photoluminescence when exited by 980 nm laser. The highest PL intensities were obtained in La2O2S co-doped with 8 wt% Yb and 1.5 wt% Ho, or in case of La2O2S:Yb3+/Tm3+ with 4 wt% Yb and 0.5 wt% Tm. The CIE 1976 chromaticity coordinates of Ho3+ photoluminescence emission are (0.119, 0.581), with color purity of 98.7 %. The chromaticity of upconversion emission was invariant to doping concentrations.",
journal = "Optical Materials",
title = "Upconversion photoluminescence of sub-micron lanthanum oxysulfide particles co-doped with Yb3+/Ho3+ and Yb3+/Tm3+ synthesized by optimized combustion technique",
volume = "120",
pages = "111417",
doi = "10.1016/j.optmat.2021.111417"
}

Ćirić, A., Sekulić, M., Shah, K., Chakrabarty, B. S.,& Dramićanin, M.. (2021). Upconversion photoluminescence of sub-micron lanthanum oxysulfide particles co-doped with Yb3+/Ho3+ and Yb3+/Tm3+ synthesized by optimized combustion technique. in Optical Materials, 120, 111417.
https://doi.org/10.1016/j.optmat.2021.111417

Ćirić A, Sekulić M, Shah K, Chakrabarty BS, Dramićanin M. Upconversion photoluminescence of sub-micron lanthanum oxysulfide particles co-doped with Yb3+/Ho3+ and Yb3+/Tm3+ synthesized by optimized combustion technique. in Optical Materials. 2021;120:111417.
doi:10.1016/j.optmat.2021.111417 .

Ćirić, Aleksandar, Sekulić, Milica, Shah, Kevil, Chakrabarty, Bishwajit S., Dramićanin, Miroslav, "Upconversion photoluminescence of sub-micron lanthanum oxysulfide particles co-doped with Yb3+/Ho3+ and Yb3+/Tm3+ synthesized by optimized combustion technique" in Optical Materials, 120 (2021):111417,
https://doi.org/10.1016/j.optmat.2021.111417 . .

TY  - JOUR
AU  - Ćirić, Aleksandar
AU  - Shah, Kevil
AU  - Sekulić, Milica
AU  - Chakrabarty, Bishwajit S.
AU  - Dramićanin, Miroslav
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9884
AB  - Nanoparticles of less than 100 nm of La2O2S co-doped with Er3+ and Yb3+ in 2% and 12% concentrations, respectively, were synthesized by the improved furnace combustion technique that limits the precursor usage and without the hazardous chemicals. The lanthanum oxysulfide was identified in hexagonal crystal phase. Under 980 nm excitation the sample exhibits a typical upconversion photoluminescence for Yb3+/Er3+. Due to the high concentration of Yb3+, the red emission of Er3+ is of high intensity due to the energy back-transfer. The red emission is less pronounced in downshifting spectrum. Chromaticity analysis shows high color purities of emissions. La2O2S:Er3+/Yb3+ nanoparticle performances as a luminescent temperature sensor were first predicted by the Judd-Ofelt theory and then compared with the conventional experimental thermometry by Luminescence intensity ratio method, with an excellent match in all parameters. The relative sensitivity at 300 K is 1.14 K−1 and it remains relatively high at the physiologically relevant range. The obtained temperature resolution was 0.17 K at 300 K.
T2  - Optik
T1  - La2O2S:Er3+/Yb3+ nanoparticles synthesized by the optimized furnace combustion technique and their high-resolution temperature sensing
VL  - 245
SP  - 167690
DO  - 10.1016/j.ijleo.2021.167690
ER  - 

@article{
author = "Ćirić, Aleksandar and Shah, Kevil and Sekulić, Milica and Chakrabarty, Bishwajit S. and Dramićanin, Miroslav",
year = "2021",
abstract = "Nanoparticles of less than 100 nm of La2O2S co-doped with Er3+ and Yb3+ in 2% and 12% concentrations, respectively, were synthesized by the improved furnace combustion technique that limits the precursor usage and without the hazardous chemicals. The lanthanum oxysulfide was identified in hexagonal crystal phase. Under 980 nm excitation the sample exhibits a typical upconversion photoluminescence for Yb3+/Er3+. Due to the high concentration of Yb3+, the red emission of Er3+ is of high intensity due to the energy back-transfer. The red emission is less pronounced in downshifting spectrum. Chromaticity analysis shows high color purities of emissions. La2O2S:Er3+/Yb3+ nanoparticle performances as a luminescent temperature sensor were first predicted by the Judd-Ofelt theory and then compared with the conventional experimental thermometry by Luminescence intensity ratio method, with an excellent match in all parameters. The relative sensitivity at 300 K is 1.14 K−1 and it remains relatively high at the physiologically relevant range. The obtained temperature resolution was 0.17 K at 300 K.",
journal = "Optik",
title = "La2O2S:Er3+/Yb3+ nanoparticles synthesized by the optimized furnace combustion technique and their high-resolution temperature sensing",
volume = "245",
pages = "167690",
doi = "10.1016/j.ijleo.2021.167690"
}

Ćirić, A., Shah, K., Sekulić, M., Chakrabarty, B. S.,& Dramićanin, M.. (2021). La2O2S:Er3+/Yb3+ nanoparticles synthesized by the optimized furnace combustion technique and their high-resolution temperature sensing. in Optik, 245, 167690.
https://doi.org/10.1016/j.ijleo.2021.167690

Ćirić A, Shah K, Sekulić M, Chakrabarty BS, Dramićanin M. La2O2S:Er3+/Yb3+ nanoparticles synthesized by the optimized furnace combustion technique and their high-resolution temperature sensing. in Optik. 2021;245:167690.
doi:10.1016/j.ijleo.2021.167690 .

Ćirić, Aleksandar, Shah, Kevil, Sekulić, Milica, Chakrabarty, Bishwajit S., Dramićanin, Miroslav, "La2O2S:Er3+/Yb3+ nanoparticles synthesized by the optimized furnace combustion technique and their high-resolution temperature sensing" in Optik, 245 (2021):167690,
https://doi.org/10.1016/j.ijleo.2021.167690 . .

TY  - JOUR
AU  - Periša, Jovana
AU  - Ristić, Zoran
AU  - Đorđević, Vesna R.
AU  - Sekulić, Milica
AU  - Dramićanin, Tatjana
AU  - Antić, Željka
AU  - Dramićanin, Miroslav
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9859
AB  - The multiparametric luminescence thermometry with Dy3+, Cr3+ double activated yttrium aluminium garnet – YAG is demonstrated. Phospors were synthesized via Pechini method and their structure is confirmed by X-ray diffraction analysis. Mean crystallite size of powders was calculated to be ~22 nm. Morphology was investigated using scanning electron microscopy showing combination of dense, different size chunks constituted of spherical particles bellow 50 nm in size. Photoluminescence emission spectra of the Dy3+, Cr3+ double activated YAG consist of blue and yellow Dy3+ emissions and the broad, deep red Cr3+ emission. The decrease in the Dy3+ emission intensity with the increase in the Cr3+ content indicates the efficient energy transfer from Dy3+ to Cr3+ of ~90%. Temperature-dependant photoluminescence emission measurements are performed under 484 nm and 582 nm excitation in the steady-state domain and in the 175 K–650 K temperature range. The noted alterations of luminescence with temperature present an excellent base for studying the multiparametric temperature readouts. The luminescence intensity ratio, the most frequently exploited luminescent thermometry temperature readout method, was tested using: i) the combination of Dy3+ and Cr3+ emissions, ii) using the double excitation approach, and iii) using Cr3+ emission only, with relative sensitivities of 0.64 %K−1 at 175 K, 0.96 %K−1 at 200 K and 2.2 %K−1 at 200 K, respectively.
T2  - Journal of Luminescence
T1  - Multiparametric luminescence thermometry from Dy3+, Cr3+ double activated YAG
VL  - 238
SP  - 118306
DO  - 10.1016/j.jlumin.2021.118306
ER  - 

@article{
author = "Periša, Jovana and Ristić, Zoran and Đorđević, Vesna R. and Sekulić, Milica and Dramićanin, Tatjana and Antić, Željka and Dramićanin, Miroslav",
year = "2021",
abstract = "The multiparametric luminescence thermometry with Dy3+, Cr3+ double activated yttrium aluminium garnet – YAG is demonstrated. Phospors were synthesized via Pechini method and their structure is confirmed by X-ray diffraction analysis. Mean crystallite size of powders was calculated to be ~22 nm. Morphology was investigated using scanning electron microscopy showing combination of dense, different size chunks constituted of spherical particles bellow 50 nm in size. Photoluminescence emission spectra of the Dy3+, Cr3+ double activated YAG consist of blue and yellow Dy3+ emissions and the broad, deep red Cr3+ emission. The decrease in the Dy3+ emission intensity with the increase in the Cr3+ content indicates the efficient energy transfer from Dy3+ to Cr3+ of ~90%. Temperature-dependant photoluminescence emission measurements are performed under 484 nm and 582 nm excitation in the steady-state domain and in the 175 K–650 K temperature range. The noted alterations of luminescence with temperature present an excellent base for studying the multiparametric temperature readouts. The luminescence intensity ratio, the most frequently exploited luminescent thermometry temperature readout method, was tested using: i) the combination of Dy3+ and Cr3+ emissions, ii) using the double excitation approach, and iii) using Cr3+ emission only, with relative sensitivities of 0.64 %K−1 at 175 K, 0.96 %K−1 at 200 K and 2.2 %K−1 at 200 K, respectively.",
journal = "Journal of Luminescence",
title = "Multiparametric luminescence thermometry from Dy3+, Cr3+ double activated YAG",
volume = "238",
pages = "118306",
doi = "10.1016/j.jlumin.2021.118306"
}

Periša, J., Ristić, Z., Đorđević, V. R., Sekulić, M., Dramićanin, T., Antić, Ž.,& Dramićanin, M.. (2021). Multiparametric luminescence thermometry from Dy3+, Cr3+ double activated YAG. in Journal of Luminescence, 238, 118306.
https://doi.org/10.1016/j.jlumin.2021.118306

Periša J, Ristić Z, Đorđević VR, Sekulić M, Dramićanin T, Antić Ž, Dramićanin M. Multiparametric luminescence thermometry from Dy3+, Cr3+ double activated YAG. in Journal of Luminescence. 2021;238:118306.
doi:10.1016/j.jlumin.2021.118306 .

Periša, Jovana, Ristić, Zoran, Đorđević, Vesna R., Sekulić, Milica, Dramićanin, Tatjana, Antić, Željka, Dramićanin, Miroslav, "Multiparametric luminescence thermometry from Dy3+, Cr3+ double activated YAG" in Journal of Luminescence, 238 (2021):118306,
https://doi.org/10.1016/j.jlumin.2021.118306 . .

TY  - CHAP
AU  - Jelić, Aleksandra
AU  - Božić, Aleksandra
AU  - Stamenović, Marina
AU  - Sekulić, Milica
AU  - Porobić, Slavica
AU  - Dikić, Stefan
AU  - Putić, Slaviša
AU  - Mitrović, Nenad
AU  - Mladenović, Goran
AU  - Mitrović, Aleksandra
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9636
AB  - Halloysite nanotubes (HNTs), naturally occurring as aluminosilicate nanoclay mineral, have recently emerged as a possible nanomaterial for countless applications due to their specific chemical structure, tubular shape, high aspect ratio, biocompatibility and low toxicity. In this study, HNTs were incorporated into the epoxy resin matrix to improve its mechanical properties and thermal stability. However, heterogeneous size, surface charge and surface hydrogen bond formation, result in aggregation of HNTs in epoxies to a certain extent. Three specific techniques were used to integrate HNTs into neat epoxy resin (NE). The structure and morphology of the embedded nanotubes were confirmed by Fourier-transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD). Tensile testing was carried out and the fractured surface of the tested specimen was analysed using scanning electron microscopy (SEM). The thermal stability of the prepared nanocomposite materials was investigated by thermogravimetric (TG) and derivative thermogravimetry (DTG) studies. The obtained results indicated that improved properties of HNTs/epoxy nanocomposite materials were related to the unique properties of well-dispersed HNTs, agglomerate scale, and reduced void presence, and could be controlled by the manufacturing processes.
PB  - Springer International Publishing
T2  - Experimental and Computational Investigations in Engineering
T1  - Effects of dispersion and particle-matrix interactions on mechanical and thermal properties of hnt/epoxy nanocomposite materials
SP  - 310
EP  - 325
DO  - 10.1007/978-3-030-58362-0_18
ER  - 

@inbook{
author = "Jelić, Aleksandra and Božić, Aleksandra and Stamenović, Marina and Sekulić, Milica and Porobić, Slavica and Dikić, Stefan and Putić, Slaviša and Mitrović, Nenad and Mladenović, Goran and Mitrović, Aleksandra",
year = "2021",
abstract = "Halloysite nanotubes (HNTs), naturally occurring as aluminosilicate nanoclay mineral, have recently emerged as a possible nanomaterial for countless applications due to their specific chemical structure, tubular shape, high aspect ratio, biocompatibility and low toxicity. In this study, HNTs were incorporated into the epoxy resin matrix to improve its mechanical properties and thermal stability. However, heterogeneous size, surface charge and surface hydrogen bond formation, result in aggregation of HNTs in epoxies to a certain extent. Three specific techniques were used to integrate HNTs into neat epoxy resin (NE). The structure and morphology of the embedded nanotubes were confirmed by Fourier-transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD). Tensile testing was carried out and the fractured surface of the tested specimen was analysed using scanning electron microscopy (SEM). The thermal stability of the prepared nanocomposite materials was investigated by thermogravimetric (TG) and derivative thermogravimetry (DTG) studies. The obtained results indicated that improved properties of HNTs/epoxy nanocomposite materials were related to the unique properties of well-dispersed HNTs, agglomerate scale, and reduced void presence, and could be controlled by the manufacturing processes.",
publisher = "Springer International Publishing",
journal = "Experimental and Computational Investigations in Engineering",
booktitle = "Effects of dispersion and particle-matrix interactions on mechanical and thermal properties of hnt/epoxy nanocomposite materials",
pages = "310-325",
doi = "10.1007/978-3-030-58362-0_18"
}

Jelić, A., Božić, A., Stamenović, M., Sekulić, M., Porobić, S., Dikić, S., Putić, S., Mitrović, N., Mladenović, G.,& Mitrović, A.. (2021). Effects of dispersion and particle-matrix interactions on mechanical and thermal properties of hnt/epoxy nanocomposite materials. in Experimental and Computational Investigations in Engineering
Springer International Publishing., 310-325.
https://doi.org/10.1007/978-3-030-58362-0_18

Jelić A, Božić A, Stamenović M, Sekulić M, Porobić S, Dikić S, Putić S, Mitrović N, Mladenović G, Mitrović A. Effects of dispersion and particle-matrix interactions on mechanical and thermal properties of hnt/epoxy nanocomposite materials. in Experimental and Computational Investigations in Engineering. 2021;:310-325.
doi:10.1007/978-3-030-58362-0_18 .

Jelić, Aleksandra, Božić, Aleksandra, Stamenović, Marina, Sekulić, Milica, Porobić, Slavica, Dikić, Stefan, Putić, Slaviša, Mitrović, Nenad, Mladenović, Goran, Mitrović, Aleksandra, "Effects of dispersion and particle-matrix interactions on mechanical and thermal properties of hnt/epoxy nanocomposite materials" in Experimental and Computational Investigations in Engineering (2021):310-325,
https://doi.org/10.1007/978-3-030-58362-0_18 . .

TY  - JOUR
AU  - Ristić, Zoran
AU  - Đorđević, Vesna R.
AU  - Medić, Mina M.
AU  - Kuzman, Sanja
AU  - Sekulić, Milica
AU  - Antić, Željka
AU  - Dramićanin, Miroslav
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9624
AB  - Cr3+-doped Mg2SiO4 orthorhombic nanoparticles are synthesized by a combustion method. The 3d3 electron configuration of the Cr3+ ion results in the deep-red emission from optical transitions between d-d orbitals. Two overlapping emissions from the Cr3+ spin-forbidden 2Eg→ 4A2g and the spin-allowed 4T2g→ 4A2g electronic transitions are influenced by the strong crystal field in Mg2SiO4 and, thus, are suitable for ratiometric luminescence thermometry. The temperature-induced changes in Cr3+-doped Mg2SiO4 emission are tested for use in luminescence thermometry from cryogenic to physiologically relevant temperatures (10-350 K) by three approaches: (a) temperature-induced changes of emission intensity; (b) temperature-dependent luminescence lifetime; and (c) temperature-induced changes of emission band position. The second approach offers applicable thermometry at cryogenic temperatures, starting from temperatures as low as 50 K, while all three approaches offer applicable thermometry at physiologically relevant temperatures with relative sensitivities of 0.7% K-1 for emission intensity, 0.8% K-1 for lifetime and 0.85% K-1 for band position at 310 K. © 2021 IOP Publishing Ltd.
T2  - Measurement Science and Technology
T1  - Triple-temperature readout in luminescence thermometry with Cr3+-doped Mg2SiO4 operating from cryogenic to physiologically relevant temperatures
VL  - 32
IS  - 5
SP  - 054004
DO  - 10.1088/1361-6501/abdc9a
ER  - 

@article{
author = "Ristić, Zoran and Đorđević, Vesna R. and Medić, Mina M. and Kuzman, Sanja and Sekulić, Milica and Antić, Željka and Dramićanin, Miroslav",
year = "2021",
abstract = "Cr3+-doped Mg2SiO4 orthorhombic nanoparticles are synthesized by a combustion method. The 3d3 electron configuration of the Cr3+ ion results in the deep-red emission from optical transitions between d-d orbitals. Two overlapping emissions from the Cr3+ spin-forbidden 2Eg→ 4A2g and the spin-allowed 4T2g→ 4A2g electronic transitions are influenced by the strong crystal field in Mg2SiO4 and, thus, are suitable for ratiometric luminescence thermometry. The temperature-induced changes in Cr3+-doped Mg2SiO4 emission are tested for use in luminescence thermometry from cryogenic to physiologically relevant temperatures (10-350 K) by three approaches: (a) temperature-induced changes of emission intensity; (b) temperature-dependent luminescence lifetime; and (c) temperature-induced changes of emission band position. The second approach offers applicable thermometry at cryogenic temperatures, starting from temperatures as low as 50 K, while all three approaches offer applicable thermometry at physiologically relevant temperatures with relative sensitivities of 0.7% K-1 for emission intensity, 0.8% K-1 for lifetime and 0.85% K-1 for band position at 310 K. © 2021 IOP Publishing Ltd.",
journal = "Measurement Science and Technology",
title = "Triple-temperature readout in luminescence thermometry with Cr3+-doped Mg2SiO4 operating from cryogenic to physiologically relevant temperatures",
volume = "32",
number = "5",
pages = "054004",
doi = "10.1088/1361-6501/abdc9a"
}

Ristić, Z., Đorđević, V. R., Medić, M. M., Kuzman, S., Sekulić, M., Antić, Ž.,& Dramićanin, M.. (2021). Triple-temperature readout in luminescence thermometry with Cr3+-doped Mg2SiO4 operating from cryogenic to physiologically relevant temperatures. in Measurement Science and Technology, 32(5), 054004.
https://doi.org/10.1088/1361-6501/abdc9a

Ristić Z, Đorđević VR, Medić MM, Kuzman S, Sekulić M, Antić Ž, Dramićanin M. Triple-temperature readout in luminescence thermometry with Cr3+-doped Mg2SiO4 operating from cryogenic to physiologically relevant temperatures. in Measurement Science and Technology. 2021;32(5):054004.
doi:10.1088/1361-6501/abdc9a .

Ristić, Zoran, Đorđević, Vesna R., Medić, Mina M., Kuzman, Sanja, Sekulić, Milica, Antić, Željka, Dramićanin, Miroslav, "Triple-temperature readout in luminescence thermometry with Cr3+-doped Mg2SiO4 operating from cryogenic to physiologically relevant temperatures" in Measurement Science and Technology, 32, no. 5 (2021):054004,
https://doi.org/10.1088/1361-6501/abdc9a . .

TY  - JOUR
AU  - Jelić, Aleksandra
AU  - Sekulić, Milica
AU  - Stamenović, Marina
AU  - Ugrinović, Vukašin
AU  - Putić, Slaviša
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9707
AB  - The paper presents static and dynamic tests of carbon/epoxy composite materials with fiber orientation at 0 degrees/90 degrees and +/- 45 degrees. The main tensile properties were determined as a basis for subsequent dynamic tests, in which permanent dynamic strength, crack growth, and crack growth rate in the material due to the action of fatigue load were assessed. Comparisons were made regarding the structure of the tested specimens. Samples were obtained from prepregs with a specific density of 1600 kg/m(3). The tests were performed at room temperature. Scanning electron microscopy (SEM) was used to analyze the damage in the material during these tests, the mechanisms of their further damage progression and, the impact on the growth and growth rate of the initial crack in the material. The analysis of numerical results and micromechanical analysis confirmed the dominant role of the reinforcing structural element in the material in all performed tests. The obtained results are of great importance in the application of composite materials of such structures under different operating conditions and load regimes.
T2  - Hemijska industrija
T1  - Micromechanical analysis of fatigue and crack growth in carbon-fiber epoxy composites based on mechanical testing
VL  - 74
IS  - 4
SP  - 257
EP  - 264
DO  - 10.2298/HEMIND200615022J
ER  - 

@article{
author = "Jelić, Aleksandra and Sekulić, Milica and Stamenović, Marina and Ugrinović, Vukašin and Putić, Slaviša",
year = "2020",
abstract = "The paper presents static and dynamic tests of carbon/epoxy composite materials with fiber orientation at 0 degrees/90 degrees and +/- 45 degrees. The main tensile properties were determined as a basis for subsequent dynamic tests, in which permanent dynamic strength, crack growth, and crack growth rate in the material due to the action of fatigue load were assessed. Comparisons were made regarding the structure of the tested specimens. Samples were obtained from prepregs with a specific density of 1600 kg/m(3). The tests were performed at room temperature. Scanning electron microscopy (SEM) was used to analyze the damage in the material during these tests, the mechanisms of their further damage progression and, the impact on the growth and growth rate of the initial crack in the material. The analysis of numerical results and micromechanical analysis confirmed the dominant role of the reinforcing structural element in the material in all performed tests. The obtained results are of great importance in the application of composite materials of such structures under different operating conditions and load regimes.",
journal = "Hemijska industrija",
title = "Micromechanical analysis of fatigue and crack growth in carbon-fiber epoxy composites based on mechanical testing",
volume = "74",
number = "4",
pages = "257-264",
doi = "10.2298/HEMIND200615022J"
}

Jelić, A., Sekulić, M., Stamenović, M., Ugrinović, V.,& Putić, S.. (2020). Micromechanical analysis of fatigue and crack growth in carbon-fiber epoxy composites based on mechanical testing. in Hemijska industrija, 74(4), 257-264.
https://doi.org/10.2298/HEMIND200615022J

Jelić A, Sekulić M, Stamenović M, Ugrinović V, Putić S. Micromechanical analysis of fatigue and crack growth in carbon-fiber epoxy composites based on mechanical testing. in Hemijska industrija. 2020;74(4):257-264.
doi:10.2298/HEMIND200615022J .

Jelić, Aleksandra, Sekulić, Milica, Stamenović, Marina, Ugrinović, Vukašin, Putić, Slaviša, "Micromechanical analysis of fatigue and crack growth in carbon-fiber epoxy composites based on mechanical testing" in Hemijska industrija, 74, no. 4 (2020):257-264,
https://doi.org/10.2298/HEMIND200615022J . .

TY  - JOUR
AU  - Davidović, Slađana Z.
AU  - Lazić, Vesna M.
AU  - Miljković, Miona G.
AU  - Gordić, Milan V.
AU  - Sekulić, Milica
AU  - Marinović-Cincović, Milena
AU  - Ratnayake, Ishara S.
AU  - Ahrenkiel, Scott Phillip
AU  - Nedeljković, Jovan
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8452
AB  - The antibacterial ability of in situ prepared nanometer-sized silver particles, immobilized in agar-agar films, was studied as a function of the concentration of co-dopant, magnesium ions. Content of inorganic components in hybrid films was determined using inductively coupled plasma optic emission spectroscopy, and found to be low (<2 wt.-%). Morphology of prepared hybrid films, studied by transmission electron microscopy, revealed the presence of non-agglomerated and randomly distributed 10–20 nm silver nanoparticles (Ag NPs) within the agar-agar matrices. Fourier-transform infrared spectroscopy indicated the distinct chemical interaction between Ag NPs and polymer chains. Thermogravimetric analysis, as well as the determination of tensile strength, Young's modulus, and elongation at break showed improvement of thermal stability and mechanical properties of agar-agar matrices upon the incorporation of Ag NPs due to high compatibility between the hydrophilic organic component and inorganic components. The complete microbial reduction of Gram-positive bacteria Staphylococcus aureuswas observed for all agar-silver films, while satisfactory results were observed for Gram-negative bacteria Pseudomonas aeruginosa (≥99.6%). The release of Ag+ ions is suppressed by the increase of the concentration of Mg2+ ions and it was found to be significantly smaller (≤0.24 ppm) than the harmful ecological level (1 ppm). © 2019 Elsevier Ltd
T2  - Carbohydrate Polymers
T1  - Antibacterial ability of immobilized silver nanoparticles in agar-agar films co-doped with magnesium ions
VL  - 224
SP  - 115187
DO  - 10.1016/j.carbpol.2019.115187
ER  - 

@article{
author = "Davidović, Slađana Z. and Lazić, Vesna M. and Miljković, Miona G. and Gordić, Milan V. and Sekulić, Milica and Marinović-Cincović, Milena and Ratnayake, Ishara S. and Ahrenkiel, Scott Phillip and Nedeljković, Jovan",
year = "2019",
abstract = "The antibacterial ability of in situ prepared nanometer-sized silver particles, immobilized in agar-agar films, was studied as a function of the concentration of co-dopant, magnesium ions. Content of inorganic components in hybrid films was determined using inductively coupled plasma optic emission spectroscopy, and found to be low (<2 wt.-%). Morphology of prepared hybrid films, studied by transmission electron microscopy, revealed the presence of non-agglomerated and randomly distributed 10–20 nm silver nanoparticles (Ag NPs) within the agar-agar matrices. Fourier-transform infrared spectroscopy indicated the distinct chemical interaction between Ag NPs and polymer chains. Thermogravimetric analysis, as well as the determination of tensile strength, Young's modulus, and elongation at break showed improvement of thermal stability and mechanical properties of agar-agar matrices upon the incorporation of Ag NPs due to high compatibility between the hydrophilic organic component and inorganic components. The complete microbial reduction of Gram-positive bacteria Staphylococcus aureuswas observed for all agar-silver films, while satisfactory results were observed for Gram-negative bacteria Pseudomonas aeruginosa (≥99.6%). The release of Ag+ ions is suppressed by the increase of the concentration of Mg2+ ions and it was found to be significantly smaller (≤0.24 ppm) than the harmful ecological level (1 ppm). © 2019 Elsevier Ltd",
journal = "Carbohydrate Polymers",
title = "Antibacterial ability of immobilized silver nanoparticles in agar-agar films co-doped with magnesium ions",
volume = "224",
pages = "115187",
doi = "10.1016/j.carbpol.2019.115187"
}

Davidović, S. Z., Lazić, V. M., Miljković, M. G., Gordić, M. V., Sekulić, M., Marinović-Cincović, M., Ratnayake, I. S., Ahrenkiel, S. P.,& Nedeljković, J.. (2019). Antibacterial ability of immobilized silver nanoparticles in agar-agar films co-doped with magnesium ions. in Carbohydrate Polymers, 224, 115187.
https://doi.org/10.1016/j.carbpol.2019.115187

Davidović SZ, Lazić VM, Miljković MG, Gordić MV, Sekulić M, Marinović-Cincović M, Ratnayake IS, Ahrenkiel SP, Nedeljković J. Antibacterial ability of immobilized silver nanoparticles in agar-agar films co-doped with magnesium ions. in Carbohydrate Polymers. 2019;224:115187.
doi:10.1016/j.carbpol.2019.115187 .

Davidović, Slađana Z., Lazić, Vesna M., Miljković, Miona G., Gordić, Milan V., Sekulić, Milica, Marinović-Cincović, Milena, Ratnayake, Ishara S., Ahrenkiel, Scott Phillip, Nedeljković, Jovan, "Antibacterial ability of immobilized silver nanoparticles in agar-agar films co-doped with magnesium ions" in Carbohydrate Polymers, 224 (2019):115187,
https://doi.org/10.1016/j.carbpol.2019.115187 . .

TY  - JOUR
AU  - Sekulić, Milica
AU  - Ristić, Zoran
AU  - Milićević, Bojana R.
AU  - Antić, Željka
AU  - Đorđević, Vesna R.
AU  - Dramićanin, Miroslav
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8421
AB  - In this work, the potential of Li1.8Na0.2TiO3:Mn4+ for the lifetime-based luminescence thermometry is assessed. The material is prepared by the solid-state reaction of Li2CO3, Na2CO3, and nanostructured TiO2 at 800 °C, and its monoclinic structure (space group C2/c) is confirmed by X-ray diffraction analysis. In this host, Mn4+ provides strong absorption around 330 nm and 500 nm due to 4A2g → 4T1g and 4A2g→ 4T2g electric dipole forbidden and spin-allowed electron transitions, respectively, and emits around 679 nm on account of 2Eg→ 4A2g spin forbidden electron transition. Temperature dependences of emission intensity and emission decay are measured over the 10–350 K range. Due to the low value of energy of 4T2g level (20000 cm−1), the strong emission quenching starts at low-temperatures which favors the use of this material for the luminescence thermometry. It is demonstrated that the quite large value of relative sensitivity (2.27% K−1@330 K) facilitates temperature measurements with temperature resolution better than 0.15 K, and with the excellent repeatability. © 2019 Elsevier B.V.
T2  - Optics Communications
T1  - Li1.8Na0.2TiO3:Mn4+: The highly sensitive probe for the low-temperature lifetime-based luminescence thermometry
VL  - 452
SP  - 342
EP  - 346
DO  - 10.1016/j.optcom.2019.07.056
ER  - 

@article{
author = "Sekulić, Milica and Ristić, Zoran and Milićević, Bojana R. and Antić, Željka and Đorđević, Vesna R. and Dramićanin, Miroslav",
year = "2019",
abstract = "In this work, the potential of Li1.8Na0.2TiO3:Mn4+ for the lifetime-based luminescence thermometry is assessed. The material is prepared by the solid-state reaction of Li2CO3, Na2CO3, and nanostructured TiO2 at 800 °C, and its monoclinic structure (space group C2/c) is confirmed by X-ray diffraction analysis. In this host, Mn4+ provides strong absorption around 330 nm and 500 nm due to 4A2g → 4T1g and 4A2g→ 4T2g electric dipole forbidden and spin-allowed electron transitions, respectively, and emits around 679 nm on account of 2Eg→ 4A2g spin forbidden electron transition. Temperature dependences of emission intensity and emission decay are measured over the 10–350 K range. Due to the low value of energy of 4T2g level (20000 cm−1), the strong emission quenching starts at low-temperatures which favors the use of this material for the luminescence thermometry. It is demonstrated that the quite large value of relative sensitivity (2.27% K−1@330 K) facilitates temperature measurements with temperature resolution better than 0.15 K, and with the excellent repeatability. © 2019 Elsevier B.V.",
journal = "Optics Communications",
title = "Li1.8Na0.2TiO3:Mn4+: The highly sensitive probe for the low-temperature lifetime-based luminescence thermometry",
volume = "452",
pages = "342-346",
doi = "10.1016/j.optcom.2019.07.056"
}

Sekulić, M., Ristić, Z., Milićević, B. R., Antić, Ž., Đorđević, V. R.,& Dramićanin, M.. (2019). Li1.8Na0.2TiO3:Mn4+: The highly sensitive probe for the low-temperature lifetime-based luminescence thermometry. in Optics Communications, 452, 342-346.
https://doi.org/10.1016/j.optcom.2019.07.056

Sekulić M, Ristić Z, Milićević BR, Antić Ž, Đorđević VR, Dramićanin M. Li1.8Na0.2TiO3:Mn4+: The highly sensitive probe for the low-temperature lifetime-based luminescence thermometry. in Optics Communications. 2019;452:342-346.
doi:10.1016/j.optcom.2019.07.056 .

Sekulić, Milica, Ristić, Zoran, Milićević, Bojana R., Antić, Željka, Đorđević, Vesna R., Dramićanin, Miroslav, "Li1.8Na0.2TiO3:Mn4+: The highly sensitive probe for the low-temperature lifetime-based luminescence thermometry" in Optics Communications, 452 (2019):342-346,
https://doi.org/10.1016/j.optcom.2019.07.056 . .

TY  - JOUR
AU  - Papan, Jelena
AU  - Jovanović, Dragana J.
AU  - Sekulić, Milica
AU  - Glais, Estelle
AU  - Dramićanin, Miroslav
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0032591019301093
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8057
AB  - Defect-fluorite structured Eu 3+ -doped Y 2 Sn 2 O 7 nanoparticles (30–40 nm) were successfully prepared through a facile co-precipitation method without any organic additives or templates followed by calcination in air. Luminescent properties of the as-prepared Y 2-x Eu x Sn 2 O 7 (0.02 ≤ x ≤ 0.6) nanophosphors were fully characterized from an experimental and theoretical point of view (excitation, emission, lifetime, critical concentration, temperature-dependent luminescence and thermal stability, type of interactions and the Judd-Ofelt analysis). The nanophosphors showed relatively sharp excitation bands from 360 to 530 nm and exhibited characteristic emission bands with the most intensive emission centered at 612 nm. In addition, Gd 1.98 Eu 0.02 Sn 2 O 7 and Lu 1.98 Eu 0.02 Sn 2 O 7 samples were prepared in order to study how substitution of RE 3+ (Y 3+ with Gd 3+ and Lu 3+ ions) influences on luminescent properties of RE 1.98 Eu 0.02 Sn 2 O 7 and thermal stability of their luminescence. In order to understand better luminescent properties, the Judd–Ofelt analysis was applied to all the synthesized powders. The highest value of quantum efficiency, ~96%, was estimated for Lu 1.98 Eu 0.02 Sn 2 O 7 . To assess potential application in high-power LEDs, the temperature-dependent emission spectra of Y 1.98 Eu 0.02 Sn 2 O 7 , Gd 1.98 Eu 0.02 Sn 2 O 7 and Lu 1.98 Eu 0.02 Sn 2 O 7 nanophosphors were studied. © 2019 Elsevier B.V.
T2  - Powder Technology
T1  - Photoluminescence properties and thermal stability of RE2-xEuxSn2O7 (RE = Y3+, Gd3+, Lu3+) red nanophosphors: An experimental and theoretical study
VL  - 346
SP  - 150
EP  - 159
DO  - 10.1016/j.powtec.2019.02.013
ER  - 

@article{
author = "Papan, Jelena and Jovanović, Dragana J. and Sekulić, Milica and Glais, Estelle and Dramićanin, Miroslav",
year = "2019",
abstract = "Defect-fluorite structured Eu 3+ -doped Y 2 Sn 2 O 7 nanoparticles (30–40 nm) were successfully prepared through a facile co-precipitation method without any organic additives or templates followed by calcination in air. Luminescent properties of the as-prepared Y 2-x Eu x Sn 2 O 7 (0.02 ≤ x ≤ 0.6) nanophosphors were fully characterized from an experimental and theoretical point of view (excitation, emission, lifetime, critical concentration, temperature-dependent luminescence and thermal stability, type of interactions and the Judd-Ofelt analysis). The nanophosphors showed relatively sharp excitation bands from 360 to 530 nm and exhibited characteristic emission bands with the most intensive emission centered at 612 nm. In addition, Gd 1.98 Eu 0.02 Sn 2 O 7 and Lu 1.98 Eu 0.02 Sn 2 O 7 samples were prepared in order to study how substitution of RE 3+ (Y 3+ with Gd 3+ and Lu 3+ ions) influences on luminescent properties of RE 1.98 Eu 0.02 Sn 2 O 7 and thermal stability of their luminescence. In order to understand better luminescent properties, the Judd–Ofelt analysis was applied to all the synthesized powders. The highest value of quantum efficiency, ~96%, was estimated for Lu 1.98 Eu 0.02 Sn 2 O 7 . To assess potential application in high-power LEDs, the temperature-dependent emission spectra of Y 1.98 Eu 0.02 Sn 2 O 7 , Gd 1.98 Eu 0.02 Sn 2 O 7 and Lu 1.98 Eu 0.02 Sn 2 O 7 nanophosphors were studied. © 2019 Elsevier B.V.",
journal = "Powder Technology",
title = "Photoluminescence properties and thermal stability of RE2-xEuxSn2O7 (RE = Y3+, Gd3+, Lu3+) red nanophosphors: An experimental and theoretical study",
volume = "346",
pages = "150-159",
doi = "10.1016/j.powtec.2019.02.013"
}

Papan, J., Jovanović, D. J., Sekulić, M., Glais, E.,& Dramićanin, M.. (2019). Photoluminescence properties and thermal stability of RE2-xEuxSn2O7 (RE = Y3+, Gd3+, Lu3+) red nanophosphors: An experimental and theoretical study. in Powder Technology, 346, 150-159.
https://doi.org/10.1016/j.powtec.2019.02.013

Papan J, Jovanović DJ, Sekulić M, Glais E, Dramićanin M. Photoluminescence properties and thermal stability of RE2-xEuxSn2O7 (RE = Y3+, Gd3+, Lu3+) red nanophosphors: An experimental and theoretical study. in Powder Technology. 2019;346:150-159.
doi:10.1016/j.powtec.2019.02.013 .

Papan, Jelena, Jovanović, Dragana J., Sekulić, Milica, Glais, Estelle, Dramićanin, Miroslav, "Photoluminescence properties and thermal stability of RE2-xEuxSn2O7 (RE = Y3+, Gd3+, Lu3+) red nanophosphors: An experimental and theoretical study" in Powder Technology, 346 (2019):150-159,
https://doi.org/10.1016/j.powtec.2019.02.013 . .

TY  - JOUR
AU  - Ćirić, Aleksandar
AU  - Stojadinović, Stevan
AU  - Sekulić, Milica
AU  - Dramićanin, Miroslav
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0022231318313292
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7899
AB  - In this paper we will be presenting JOES (Judd-Ofelt from Emission Spectra), an application software for calculation of the Judd-Ofelt intensity parameters and derived quantities from the emission spectra of Eu3+ doped materials. The program is written to be user friendly and it requires no previous experience in the field of study. This Free and Open-Source program written in JAVA, works on Windows, Linux and MAC OS operating systems. Program has been tested on three europium doped oxides with good luminescent properties: TiO2:Eu3+, ZrO2:Eu3+ and Nb2O5:Eu3+. We wish to give to the researchers this theoretical tool which can make the calculations easier, faster and more reliable. © 2018 Elsevier B.V.
T2  - Journal of Luminescence
T1  - JOES: An application software for Judd-Ofelt analysis from Eu3+ emission spectra
VL  - 205
SP  - 351
EP  - 356
DO  - 10.1016/j.jlumin.2018.09.048
ER  - 

@article{
author = "Ćirić, Aleksandar and Stojadinović, Stevan and Sekulić, Milica and Dramićanin, Miroslav",
year = "2019",
abstract = "In this paper we will be presenting JOES (Judd-Ofelt from Emission Spectra), an application software for calculation of the Judd-Ofelt intensity parameters and derived quantities from the emission spectra of Eu3+ doped materials. The program is written to be user friendly and it requires no previous experience in the field of study. This Free and Open-Source program written in JAVA, works on Windows, Linux and MAC OS operating systems. Program has been tested on three europium doped oxides with good luminescent properties: TiO2:Eu3+, ZrO2:Eu3+ and Nb2O5:Eu3+. We wish to give to the researchers this theoretical tool which can make the calculations easier, faster and more reliable. © 2018 Elsevier B.V.",
journal = "Journal of Luminescence",
title = "JOES: An application software for Judd-Ofelt analysis from Eu3+ emission spectra",
volume = "205",
pages = "351-356",
doi = "10.1016/j.jlumin.2018.09.048"
}

Ćirić, A., Stojadinović, S., Sekulić, M.,& Dramićanin, M.. (2019). JOES: An application software for Judd-Ofelt analysis from Eu3+ emission spectra. in Journal of Luminescence, 205, 351-356.
https://doi.org/10.1016/j.jlumin.2018.09.048

Ćirić A, Stojadinović S, Sekulić M, Dramićanin M. JOES: An application software for Judd-Ofelt analysis from Eu3+ emission spectra. in Journal of Luminescence. 2019;205:351-356.
doi:10.1016/j.jlumin.2018.09.048 .

Ćirić, Aleksandar, Stojadinović, Stevan, Sekulić, Milica, Dramićanin, Miroslav, "JOES: An application software for Judd-Ofelt analysis from Eu3+ emission spectra" in Journal of Luminescence, 205 (2019):351-356,
https://doi.org/10.1016/j.jlumin.2018.09.048 . .

TY  - JOUR
AU  - Sekulić, Milica
AU  - Đorđević, Vesna R.
AU  - Ristić, Zoran
AU  - Medić, Mina M.
AU  - Dramićanin, Miroslav
PY  - 2018
UR  - http://doi.wiley.com/10.1002/adom.201800552
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7865
AB  - The binary luminescence thermometry probe is prepared from Y2O3:Ho3+ and Mg2TiO4:Mn4+ powders. This probe facilitates self-referencing temperature readouts with excellent repeatability from both emission intensity ratio and excited state lifetimes. The ratio of intensities of Mn4+ deep red emission from 2E, 4T2→4A2 electronic transitions, and Ho3+ green emission from 5F4,5S2 →5I8 electronic transitions provides temperature measurements over the room temperature to 100 °C temperature range with a superior relative sensitivity of 4.6% °C−1 and temperature resolution of 0.1 °C. Over the same temperature range, the temperature readout from the Mn4+ emission lifetime offers measurements with relative sensitivity better than 0.5% °C−1 and better than 0.2 °C in resolution. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
T2  - Advanced Optical Materials
T1  - Highly Sensitive Dual Self-Referencing Temperature Readout from the Mn4+/Ho3+ Binary Luminescence Thermometry Probe
VL  - 6
IS  - 17
SP  - 1800552
DO  - 10.1002/adom.201800552
ER  - 

@article{
author = "Sekulić, Milica and Đorđević, Vesna R. and Ristić, Zoran and Medić, Mina M. and Dramićanin, Miroslav",
year = "2018",
abstract = "The binary luminescence thermometry probe is prepared from Y2O3:Ho3+ and Mg2TiO4:Mn4+ powders. This probe facilitates self-referencing temperature readouts with excellent repeatability from both emission intensity ratio and excited state lifetimes. The ratio of intensities of Mn4+ deep red emission from 2E, 4T2→4A2 electronic transitions, and Ho3+ green emission from 5F4,5S2 →5I8 electronic transitions provides temperature measurements over the room temperature to 100 °C temperature range with a superior relative sensitivity of 4.6% °C−1 and temperature resolution of 0.1 °C. Over the same temperature range, the temperature readout from the Mn4+ emission lifetime offers measurements with relative sensitivity better than 0.5% °C−1 and better than 0.2 °C in resolution. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",
journal = "Advanced Optical Materials",
title = "Highly Sensitive Dual Self-Referencing Temperature Readout from the Mn4+/Ho3+ Binary Luminescence Thermometry Probe",
volume = "6",
number = "17",
pages = "1800552",
doi = "10.1002/adom.201800552"
}

Sekulić, M., Đorđević, V. R., Ristić, Z., Medić, M. M.,& Dramićanin, M.. (2018). Highly Sensitive Dual Self-Referencing Temperature Readout from the Mn4+/Ho3+ Binary Luminescence Thermometry Probe. in Advanced Optical Materials, 6(17), 1800552.
https://doi.org/10.1002/adom.201800552

Sekulić M, Đorđević VR, Ristić Z, Medić MM, Dramićanin M. Highly Sensitive Dual Self-Referencing Temperature Readout from the Mn4+/Ho3+ Binary Luminescence Thermometry Probe. in Advanced Optical Materials. 2018;6(17):1800552.
doi:10.1002/adom.201800552 .

Sekulić, Milica, Đorđević, Vesna R., Ristić, Zoran, Medić, Mina M., Dramićanin, Miroslav, "Highly Sensitive Dual Self-Referencing Temperature Readout from the Mn4+/Ho3+ Binary Luminescence Thermometry Probe" in Advanced Optical Materials, 6, no. 17 (2018):1800552,
https://doi.org/10.1002/adom.201800552 . .

TY  - JOUR
AU  - Vujčić, Ivica
AU  - Gavrilović, Tamara V.
AU  - Sekulić, Milica
AU  - Mašić, Slobodan
AU  - Putić, Slaviša S.
AU  - Papan, Jelena
AU  - Dramićanin, Miroslav
PY  - 2018
UR  - http://linkinghub.elsevier.com/retrieve/pii/S0168583X18301666
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7669
AB  - Eu3+ activated LaPO4 phosphors were prepared by a high-temperature solid-state method and irradiated to different high-doses gamma-radiation in the 0-4 MGy range. No effects of high-doses of high-energy radiation on phosphor's morphology and structure were observed, as documented by electron microscopy and X-ray diffraction measurements. On the other hand, photoluminescence measurements showed that emission properties of phosphor were affected by gamma-radiation; changes in radiative properties being prominent for absorbed radiation doses up to 250 kGy after which no additional changes are observed. Judd-Ofelt analysis of emission spectra is performed to thoroughly investigate radiative properties of phosphors. Analysis showed that radiative transition probability of Eu3+ emission decreases while non-radiative probability increases upon gamma-irradiation. Quantum efficiency of emission is decreased from about 46% to 35% when Eu3+ doped LaPO4 powders are exposed to gamma-radiation of 250 kGy dose, showing no additional decrease for higher gamma-radiation doses.
T2  - Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
T1  - Gamma-radiation effects on luminescence properties of Eu 3+ activated LaPO 4 phosphor
VL  - 422
SP  - 85
EP  - 90
DO  - 10.1016/j.nimb.2018.03.002
ER  - 

@article{
author = "Vujčić, Ivica and Gavrilović, Tamara V. and Sekulić, Milica and Mašić, Slobodan and Putić, Slaviša S. and Papan, Jelena and Dramićanin, Miroslav",
year = "2018",
abstract = "Eu3+ activated LaPO4 phosphors were prepared by a high-temperature solid-state method and irradiated to different high-doses gamma-radiation in the 0-4 MGy range. No effects of high-doses of high-energy radiation on phosphor's morphology and structure were observed, as documented by electron microscopy and X-ray diffraction measurements. On the other hand, photoluminescence measurements showed that emission properties of phosphor were affected by gamma-radiation; changes in radiative properties being prominent for absorbed radiation doses up to 250 kGy after which no additional changes are observed. Judd-Ofelt analysis of emission spectra is performed to thoroughly investigate radiative properties of phosphors. Analysis showed that radiative transition probability of Eu3+ emission decreases while non-radiative probability increases upon gamma-irradiation. Quantum efficiency of emission is decreased from about 46% to 35% when Eu3+ doped LaPO4 powders are exposed to gamma-radiation of 250 kGy dose, showing no additional decrease for higher gamma-radiation doses.",
journal = "Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms",
title = "Gamma-radiation effects on luminescence properties of Eu 3+ activated LaPO 4 phosphor",
volume = "422",
pages = "85-90",
doi = "10.1016/j.nimb.2018.03.002"
}

Vujčić, I., Gavrilović, T. V., Sekulić, M., Mašić, S., Putić, S. S., Papan, J.,& Dramićanin, M.. (2018). Gamma-radiation effects on luminescence properties of Eu 3+ activated LaPO 4 phosphor. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 422, 85-90.
https://doi.org/10.1016/j.nimb.2018.03.002

Vujčić I, Gavrilović TV, Sekulić M, Mašić S, Putić SS, Papan J, Dramićanin M. Gamma-radiation effects on luminescence properties of Eu 3+ activated LaPO 4 phosphor. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms. 2018;422:85-90.
doi:10.1016/j.nimb.2018.03.002 .

Vujčić, Ivica, Gavrilović, Tamara V., Sekulić, Milica, Mašić, Slobodan, Putić, Slaviša S., Papan, Jelena, Dramićanin, Miroslav, "Gamma-radiation effects on luminescence properties of Eu 3+ activated LaPO 4 phosphor" in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 422 (2018):85-90,
https://doi.org/10.1016/j.nimb.2018.03.002 . .

TY  - JOUR
AU  - Vujčić, Ivica
AU  - Glais, Estelle
AU  - Vuković, Katarina
AU  - Sekulić, Milica
AU  - Mašić, Slobodan
AU  - Chaneac, Corinne
AU  - Dramićanin, Miroslav
AU  - Viana, Bruno
PY  - 2018
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0925346718307262
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7956
AB  - (Y1-xLnx)2O3 oxides (Ln = Y, Gd, Lu) doped with Eu3+ ions are widely used as commercialized scintillators in medical and industrial scanning applications, with high performance and attractive properties. In this work, effects of high-energy radiation on luminescence properties of (Y1-xGdx)2O3: Eu3+ powders with different particle sizes in the nanometric range are analyzed. Powders were prepared by polymer complex solution route, followed by annealing. Nanoparticles were obtained with an average size between 20 and 120 nm according to annealing conditions (time and temperature). Samples were exposed to gamma-irradiation (doses up to 4 MGy) on a commercial gamma-irradiation plant. The effect of irradiation on different nanoparticle size is followed by XRD, TEM and monitoring their luminescence properties. No change was observed in structure, morphology and steady-state emission. On the opposite after irradiation, excited-state lifetimes and quantum efficiency values are particle size dependent. © 2018 Elsevier B.V.
T2  - Optical Materials
T1  - Radiation effects, photoluminescence and radioluminescence of Eu-doped (Y0.7Gd0.3)2O3 nanoparticles with various sizes
VL  - 86
SP  - 582
EP  - 589
DO  - 10.1016/j.optmat.2018.10.049
ER  - 

@article{
author = "Vujčić, Ivica and Glais, Estelle and Vuković, Katarina and Sekulić, Milica and Mašić, Slobodan and Chaneac, Corinne and Dramićanin, Miroslav and Viana, Bruno",
year = "2018",
abstract = "(Y1-xLnx)2O3 oxides (Ln = Y, Gd, Lu) doped with Eu3+ ions are widely used as commercialized scintillators in medical and industrial scanning applications, with high performance and attractive properties. In this work, effects of high-energy radiation on luminescence properties of (Y1-xGdx)2O3: Eu3+ powders with different particle sizes in the nanometric range are analyzed. Powders were prepared by polymer complex solution route, followed by annealing. Nanoparticles were obtained with an average size between 20 and 120 nm according to annealing conditions (time and temperature). Samples were exposed to gamma-irradiation (doses up to 4 MGy) on a commercial gamma-irradiation plant. The effect of irradiation on different nanoparticle size is followed by XRD, TEM and monitoring their luminescence properties. No change was observed in structure, morphology and steady-state emission. On the opposite after irradiation, excited-state lifetimes and quantum efficiency values are particle size dependent. © 2018 Elsevier B.V.",
journal = "Optical Materials",
title = "Radiation effects, photoluminescence and radioluminescence of Eu-doped (Y0.7Gd0.3)2O3 nanoparticles with various sizes",
volume = "86",
pages = "582-589",
doi = "10.1016/j.optmat.2018.10.049"
}

Vujčić, I., Glais, E., Vuković, K., Sekulić, M., Mašić, S., Chaneac, C., Dramićanin, M.,& Viana, B.. (2018). Radiation effects, photoluminescence and radioluminescence of Eu-doped (Y0.7Gd0.3)2O3 nanoparticles with various sizes. in Optical Materials, 86, 582-589.
https://doi.org/10.1016/j.optmat.2018.10.049

Vujčić I, Glais E, Vuković K, Sekulić M, Mašić S, Chaneac C, Dramićanin M, Viana B. Radiation effects, photoluminescence and radioluminescence of Eu-doped (Y0.7Gd0.3)2O3 nanoparticles with various sizes. in Optical Materials. 2018;86:582-589.
doi:10.1016/j.optmat.2018.10.049 .

Vujčić, Ivica, Glais, Estelle, Vuković, Katarina, Sekulić, Milica, Mašić, Slobodan, Chaneac, Corinne, Dramićanin, Miroslav, Viana, Bruno, "Radiation effects, photoluminescence and radioluminescence of Eu-doped (Y0.7Gd0.3)2O3 nanoparticles with various sizes" in Optical Materials, 86 (2018):582-589,
https://doi.org/10.1016/j.optmat.2018.10.049 . .

TY  - JOUR
AU  - Vujčić, Ivica
AU  - Gavrilović, Tamara V.
AU  - Sekulić, Milica
AU  - Mašić, Slobodan
AU  - Milićević, Bojana R.
AU  - Dramićanin, Miroslav
AU  - Đorđević, Vesna R.
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7964
AB  - YPO4 phosphors doped with trivalent ion Pr3+ were prepared by sol–gel method and treated with different doses of gamma radiation, from 0.25 MGy to 4 MGy. Effects of radiation on morphology, structure and luminescent properties were analyzed. Also, the influence of radiation on the change in the color of the samples was examined. The color efficiency of powders was evaluated by colorimetric analysis (CIE and L * a * b system). It has been observed that powders change color under the influence of radiation, i.e. they pass from white to pinkish red. Also, it has been determined that the radiation affects morphology change, as the particle size increases with increasing of the radiation dose. With the increase in the radiation dose, the emission intensity of samples decreases. The structure remains almost unchanged after irradiation, and the intensity constantly decreases with increasing of dose. © 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group.
T2  - Radiation Effects and Defects in Solids
T1  - Radiation effects on luminescent and structural properties of YPO4: Pr3+ nanophosphors
VL  - 173
IS  - 11-12
SP  - 1054
EP  - 1067
DO  - 10.1080/10420150.2018.1539722
ER  - 

@article{
author = "Vujčić, Ivica and Gavrilović, Tamara V. and Sekulić, Milica and Mašić, Slobodan and Milićević, Bojana R. and Dramićanin, Miroslav and Đorđević, Vesna R.",
year = "2018",
abstract = "YPO4 phosphors doped with trivalent ion Pr3+ were prepared by sol–gel method and treated with different doses of gamma radiation, from 0.25 MGy to 4 MGy. Effects of radiation on morphology, structure and luminescent properties were analyzed. Also, the influence of radiation on the change in the color of the samples was examined. The color efficiency of powders was evaluated by colorimetric analysis (CIE and L * a * b system). It has been observed that powders change color under the influence of radiation, i.e. they pass from white to pinkish red. Also, it has been determined that the radiation affects morphology change, as the particle size increases with increasing of the radiation dose. With the increase in the radiation dose, the emission intensity of samples decreases. The structure remains almost unchanged after irradiation, and the intensity constantly decreases with increasing of dose. © 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group.",
journal = "Radiation Effects and Defects in Solids",
title = "Radiation effects on luminescent and structural properties of YPO4: Pr3+ nanophosphors",
volume = "173",
number = "11-12",
pages = "1054-1067",
doi = "10.1080/10420150.2018.1539722"
}

Vujčić, I., Gavrilović, T. V., Sekulić, M., Mašić, S., Milićević, B. R., Dramićanin, M.,& Đorđević, V. R.. (2018). Radiation effects on luminescent and structural properties of YPO4: Pr3+ nanophosphors. in Radiation Effects and Defects in Solids, 173(11-12), 1054-1067.
https://doi.org/10.1080/10420150.2018.1539722

Vujčić I, Gavrilović TV, Sekulić M, Mašić S, Milićević BR, Dramićanin M, Đorđević VR. Radiation effects on luminescent and structural properties of YPO4: Pr3+ nanophosphors. in Radiation Effects and Defects in Solids. 2018;173(11-12):1054-1067.
doi:10.1080/10420150.2018.1539722 .

Vujčić, Ivica, Gavrilović, Tamara V., Sekulić, Milica, Mašić, Slobodan, Milićević, Bojana R., Dramićanin, Miroslav, Đorđević, Vesna R., "Radiation effects on luminescent and structural properties of YPO4: Pr3+ nanophosphors" in Radiation Effects and Defects in Solids, 173, no. 11-12 (2018):1054-1067,
https://doi.org/10.1080/10420150.2018.1539722 . .