TY  - CONF
AU  - Milojkov, Dušan
AU  - Mraković, Ana
AU  - Jovanović, Gvozden
AU  - Vuković, Nikola
AU  - Bugarčić, Mladen
AU  - Antanasković, Anja
AU  - Živković-Radovanović, Vukosava
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12302
AB  - Magnetic iron oxide nanomaterials, which enable a multitude of uses, are given special focus in the fields of biomedicine and environmental protection. The detection, sorption, and/or degradation of inorganic (lead, chromium, arsenic, and cadmium), organic (dyes, pharmaceuticals, pesticides, phenols, and benzene), and biological (viruses and bacteria) pollutants can all be effectively accomplished with the use of magnetic nanoparticles. Magnetic iron oxide nanomaterials are in particular focus for use as hyperthermia media in cancer treatment and as magnetic resonance imaging (MRI) contrast agents. The possibility of magnetic separation of such materials, due to their essential properties under the influence of an external magnetic field, reduces production costs and also prevents the production and accumulation of toxic waste. Among the many metal oxide nanomaterials, magnetite (Fe3O4) and maghemite (γ-Fe2O3) are currently the only two magnetic materials approved by the US Food and Drug Administration (FDA) for human use as iron deficiency therapeutics and as contrast agents for MRI. Here, we synthesized nanoparticles of magnetite (Fe3O4) by the method of reduction-precipitation and characterized. Additionally, potential binding of brilliant green dye on Fe3O4 and construction of innovative magnetic composite was investigated. The physicochemical features were explored using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and field emission scanning electron microscopy (FESEM). XRD analysis confirms formation of the crystal phase of magnetite. The presence of magnetite nanoparticles is shown by typical groups for the peaks of iron compounds at a lower wavelength (≤ 700 cm-1 ) that are characteristic of the Fe-O bond. Morphological analyzes with FESEM showed that magnetite is a composite of nanospheres and nanorods that provide a large surface area. Dye binding study was performed using UVvisible and FTIR spectrometer.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts
T1  - Nanofabrication and characterisation of magnetic Fe3O4 nanostructures for potential environmental and biomedical applications
SP  - 14
EP  - 14
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12302
ER  - 

@conference{
author = "Milojkov, Dušan and Mraković, Ana and Jovanović, Gvozden and Vuković, Nikola and Bugarčić, Mladen and Antanasković, Anja and Živković-Radovanović, Vukosava",
year = "2023",
abstract = "Magnetic iron oxide nanomaterials, which enable a multitude of uses, are given special focus in the fields of biomedicine and environmental protection. The detection, sorption, and/or degradation of inorganic (lead, chromium, arsenic, and cadmium), organic (dyes, pharmaceuticals, pesticides, phenols, and benzene), and biological (viruses and bacteria) pollutants can all be effectively accomplished with the use of magnetic nanoparticles. Magnetic iron oxide nanomaterials are in particular focus for use as hyperthermia media in cancer treatment and as magnetic resonance imaging (MRI) contrast agents. The possibility of magnetic separation of such materials, due to their essential properties under the influence of an external magnetic field, reduces production costs and also prevents the production and accumulation of toxic waste. Among the many metal oxide nanomaterials, magnetite (Fe3O4) and maghemite (γ-Fe2O3) are currently the only two magnetic materials approved by the US Food and Drug Administration (FDA) for human use as iron deficiency therapeutics and as contrast agents for MRI. Here, we synthesized nanoparticles of magnetite (Fe3O4) by the method of reduction-precipitation and characterized. Additionally, potential binding of brilliant green dye on Fe3O4 and construction of innovative magnetic composite was investigated. The physicochemical features were explored using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and field emission scanning electron microscopy (FESEM). XRD analysis confirms formation of the crystal phase of magnetite. The presence of magnetite nanoparticles is shown by typical groups for the peaks of iron compounds at a lower wavelength (≤ 700 cm-1 ) that are characteristic of the Fe-O bond. Morphological analyzes with FESEM showed that magnetite is a composite of nanospheres and nanorods that provide a large surface area. Dye binding study was performed using UVvisible and FTIR spectrometer.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts",
title = "Nanofabrication and characterisation of magnetic Fe3O4 nanostructures for potential environmental and biomedical applications",
pages = "14-14",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12302"
}

Milojkov, D., Mraković, A., Jovanović, G., Vuković, N., Bugarčić, M., Antanasković, A.,& Živković-Radovanović, V.. (2023). Nanofabrication and characterisation of magnetic Fe3O4 nanostructures for potential environmental and biomedical applications. in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts
Belgrade : Institute of Technical Sciences of SASA., 14-14.
https://hdl.handle.net/21.15107/rcub_vinar_12302

Milojkov D, Mraković A, Jovanović G, Vuković N, Bugarčić M, Antanasković A, Živković-Radovanović V. Nanofabrication and characterisation of magnetic Fe3O4 nanostructures for potential environmental and biomedical applications. in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts. 2023;:14-14.
https://hdl.handle.net/21.15107/rcub_vinar_12302 .

Milojkov, Dušan, Mraković, Ana, Jovanović, Gvozden, Vuković, Nikola, Bugarčić, Mladen, Antanasković, Anja, Živković-Radovanović, Vukosava, "Nanofabrication and characterisation of magnetic Fe3O4 nanostructures for potential environmental and biomedical applications" in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts (2023):14-14,
https://hdl.handle.net/21.15107/rcub_vinar_12302 .

TY  - CONF
AU  - Atić, Aleksandar
AU  - Radovanović, Jelena
AU  - Vuković, Nikola
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10866
AB  - Semiconductor devices operating in the terahertz (THz) and near/mid infrared (IR) parts of the optical spectrum have been continuously explored and improved during the previous two decades [1-3]. Multiple new material platforms are being experimentally and theoretically investigated as candidates for room temperature operation of THz devices. One of the materials under recent consideration is ZnO due to its wide direct bandgap and high exciton binding energy. In this contribution we illustrate the use of a modified version of the Newton-Raphson method to numerically and self-consistently solve a system of SchrödingerPoisson equations for a structure consisting of coupled ZnObased quantum wells. The results obtained are compared with the experimental data available in the literature, after which the Additionally, the impact of the external electric field applied to the structure is assessed in order to determine the doping profile and well/barrier thicknesses that would be most promising for quantum cascade laser applications. Finally, we evaluate the absorption due to intersubband transitions between the bound states.
PB  - Belgrade : Institute of Physics
C3  - 15th Photonics Workshop (Conference) : book of abstracts; March 13-16, 2022; Kopaonik
T1  - Numerical modeling of new oxide-based heterostructures  for use in QCL devices
SP  - 16
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10866
ER  - 

@conference{
author = "Atić, Aleksandar and Radovanović, Jelena and Vuković, Nikola",
year = "2022",
abstract = "Semiconductor devices operating in the terahertz (THz) and near/mid infrared (IR) parts of the optical spectrum have been continuously explored and improved during the previous two decades [1-3]. Multiple new material platforms are being experimentally and theoretically investigated as candidates for room temperature operation of THz devices. One of the materials under recent consideration is ZnO due to its wide direct bandgap and high exciton binding energy. In this contribution we illustrate the use of a modified version of the Newton-Raphson method to numerically and self-consistently solve a system of SchrödingerPoisson equations for a structure consisting of coupled ZnObased quantum wells. The results obtained are compared with the experimental data available in the literature, after which the Additionally, the impact of the external electric field applied to the structure is assessed in order to determine the doping profile and well/barrier thicknesses that would be most promising for quantum cascade laser applications. Finally, we evaluate the absorption due to intersubband transitions between the bound states.",
publisher = "Belgrade : Institute of Physics",
journal = "15th Photonics Workshop (Conference) : book of abstracts; March 13-16, 2022; Kopaonik",
title = "Numerical modeling of new oxide-based heterostructures  for use in QCL devices",
pages = "16",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10866"
}

Atić, A., Radovanović, J.,& Vuković, N.. (2022). Numerical modeling of new oxide-based heterostructures  for use in QCL devices. in 15th Photonics Workshop (Conference) : book of abstracts; March 13-16, 2022; Kopaonik
Belgrade : Institute of Physics., 16.
https://hdl.handle.net/21.15107/rcub_vinar_10866

Atić A, Radovanović J, Vuković N. Numerical modeling of new oxide-based heterostructures  for use in QCL devices. in 15th Photonics Workshop (Conference) : book of abstracts; March 13-16, 2022; Kopaonik. 2022;:16.
https://hdl.handle.net/21.15107/rcub_vinar_10866 .

Atić, Aleksandar, Radovanović, Jelena, Vuković, Nikola, "Numerical modeling of new oxide-based heterostructures  for use in QCL devices" in 15th Photonics Workshop (Conference) : book of abstracts; March 13-16, 2022; Kopaonik (2022):16,
https://hdl.handle.net/21.15107/rcub_vinar_10866 .

TY  - CONF
AU  - Atić, Aleksandar
AU  - Radovanović, Jelena
AU  - Vuković, Nikola
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10865
AB  - In recent years ZnO has become a popular semiconductor withmany potential applications in infra-red and THz optical devices owing to awide direct bandgap (3.4 eV) in combination with relatively high exciton binding energy (60 meV) [1]-[2]. In this work, we model the electronic structure of coupled oxide-semiconductor quantum wells by numerically solving the system of coupled Schrödinger-Poisson equations self-consistently (Fig. 1).We compare the obtained results with the recent experimental data[3] and analyze howthe variation of the layers’thicknesses affects the energy states. In addition, we examine the influence of doping to assess the differences between single well and two wells’cases, for the purpose ofdesigning more complex multi-well optical system in the future.
PB  - Belgrade : Institute of Physics
C3  - PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade
T1  - Modeling of intersubband transitions in ZnO/ZnMgO Coupled Quantum Wells
SP  - 118
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10865
ER  - 

@conference{
author = "Atić, Aleksandar and Radovanović, Jelena and Vuković, Nikola",
year = "2021",
abstract = "In recent years ZnO has become a popular semiconductor withmany potential applications in infra-red and THz optical devices owing to awide direct bandgap (3.4 eV) in combination with relatively high exciton binding energy (60 meV) [1]-[2]. In this work, we model the electronic structure of coupled oxide-semiconductor quantum wells by numerically solving the system of coupled Schrödinger-Poisson equations self-consistently (Fig. 1).We compare the obtained results with the recent experimental data[3] and analyze howthe variation of the layers’thicknesses affects the energy states. In addition, we examine the influence of doping to assess the differences between single well and two wells’cases, for the purpose ofdesigning more complex multi-well optical system in the future.",
publisher = "Belgrade : Institute of Physics",
journal = "PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade",
title = "Modeling of intersubband transitions in ZnO/ZnMgO Coupled Quantum Wells",
pages = "118",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10865"
}

Atić, A., Radovanović, J.,& Vuković, N.. (2021). Modeling of intersubband transitions in ZnO/ZnMgO Coupled Quantum Wells. in PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade
Belgrade : Institute of Physics., 118.
https://hdl.handle.net/21.15107/rcub_vinar_10865

Atić A, Radovanović J, Vuković N. Modeling of intersubband transitions in ZnO/ZnMgO Coupled Quantum Wells. in PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade. 2021;:118.
https://hdl.handle.net/21.15107/rcub_vinar_10865 .

Atić, Aleksandar, Radovanović, Jelena, Vuković, Nikola, "Modeling of intersubband transitions in ZnO/ZnMgO Coupled Quantum Wells" in PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade (2021):118,
https://hdl.handle.net/21.15107/rcub_vinar_10865 .