TY  - JOUR
AU  - Mišković, Zoran L.
AU  - Moshayedi, Milad
AU  - Preciado-Rivas, Maria Rosa
AU  - Jakovac, Josip
AU  - Radović, Ivan
AU  - Despoja, Vito
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11030
AB  - We use Kramers-Kronig analysis and ab initio calculations to develop a simple analytical method for including the effects of high-energy interband electron transitions in the density polarization function of doped graphene and doped phosphorene in the optical limit. The resulting formulas are suitable for applications in the terahertz to the mid-infrared range of frequencies, where the interband electron transitions are shown to give rise to static screening with a suitably chosen in-plane polarizability. In the case of phosphorene, each component of its static polarizability tensor can be computed from a sum-rule–like formula using the ab initio data for the real part of the corresponding component of the full optical interband conductivity tensor of that material.
T2  - Radiation Effects and Defects in Solids
T1  - Modeling of the interband transitions in the optical conductivity of doped two-dimensional materials in the terahertz to the infrared frequency range: the case studies of graphene and phosphorene
VL  - 178
IS  - 1-2
SP  - 54
EP  - 71
DO  - 10.1080/10420150.2023.2186870
ER  - 

@article{
author = "Mišković, Zoran L. and Moshayedi, Milad and Preciado-Rivas, Maria Rosa and Jakovac, Josip and Radović, Ivan and Despoja, Vito",
year = "2023",
abstract = "We use Kramers-Kronig analysis and ab initio calculations to develop a simple analytical method for including the effects of high-energy interband electron transitions in the density polarization function of doped graphene and doped phosphorene in the optical limit. The resulting formulas are suitable for applications in the terahertz to the mid-infrared range of frequencies, where the interband electron transitions are shown to give rise to static screening with a suitably chosen in-plane polarizability. In the case of phosphorene, each component of its static polarizability tensor can be computed from a sum-rule–like formula using the ab initio data for the real part of the corresponding component of the full optical interband conductivity tensor of that material.",
journal = "Radiation Effects and Defects in Solids",
title = "Modeling of the interband transitions in the optical conductivity of doped two-dimensional materials in the terahertz to the infrared frequency range: the case studies of graphene and phosphorene",
volume = "178",
number = "1-2",
pages = "54-71",
doi = "10.1080/10420150.2023.2186870"
}

Mišković, Z. L., Moshayedi, M., Preciado-Rivas, M. R., Jakovac, J., Radović, I.,& Despoja, V.. (2023). Modeling of the interband transitions in the optical conductivity of doped two-dimensional materials in the terahertz to the infrared frequency range: the case studies of graphene and phosphorene. in Radiation Effects and Defects in Solids, 178(1-2), 54-71.
https://doi.org/10.1080/10420150.2023.2186870

Mišković ZL, Moshayedi M, Preciado-Rivas MR, Jakovac J, Radović I, Despoja V. Modeling of the interband transitions in the optical conductivity of doped two-dimensional materials in the terahertz to the infrared frequency range: the case studies of graphene and phosphorene. in Radiation Effects and Defects in Solids. 2023;178(1-2):54-71.
doi:10.1080/10420150.2023.2186870 .

Mišković, Zoran L., Moshayedi, Milad, Preciado-Rivas, Maria Rosa, Jakovac, Josip, Radović, Ivan, Despoja, Vito, "Modeling of the interband transitions in the optical conductivity of doped two-dimensional materials in the terahertz to the infrared frequency range: the case studies of graphene and phosphorene" in Radiation Effects and Defects in Solids, 178, no. 1-2 (2023):54-71,
https://doi.org/10.1080/10420150.2023.2186870 . .

TY  - CONF
AU  - Kalinić, Ana
AU  - Radović, Ivan
AU  - Despoja, Vito
AU  - Karbunar, Lazar
AU  - Mišković, Zoran
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12056
AB  - We investigate the stopping and image forces acting on an external charged particle moving parallel to a sandwich-like structure consisting of two graphene sheets separated by a layer of Al2O3 (sapphire), as depicted in FIG. 1. The effective dielectric function of the system is obtained using two descriptions of the electronic response of doped graphene: an ab initio method based on the time-dependent density functional theory calculations and an analytical expression based on the massless Dirac fermion (MDF) approximation for graphene π bands. It is found that the main discrepancies between the two methods come from the high-energy interband electron transitions, which are included in the ab initio method but not in the MDF method. Special attention is paid to the regime of low-particle speeds, where the MDF method compares well with the ab initio method, but the modeling is sensitive to the effects of finite temperature and the treatment of phenomenological damping. We also provide a semi-analytical analysis based on a modal decomposition of the energy loss function, for which we discuss the limit of a thick graphene-Al2O3-graphene structure.
C3  - SFKM 2023 : The 21st Symposium on Condensed Matter Physics : Book of abstracts
T1  - Dynamic-Polarization Forces Acting On A Charged Particle Moving Over A Graphene-Sapphire-Graphene Heterostructure
SP  - 82
EP  - 82
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12056
ER  - 

@conference{
author = "Kalinić, Ana and Radović, Ivan and Despoja, Vito and Karbunar, Lazar and Mišković, Zoran",
year = "2023",
abstract = "We investigate the stopping and image forces acting on an external charged particle moving parallel to a sandwich-like structure consisting of two graphene sheets separated by a layer of Al2O3 (sapphire), as depicted in FIG. 1. The effective dielectric function of the system is obtained using two descriptions of the electronic response of doped graphene: an ab initio method based on the time-dependent density functional theory calculations and an analytical expression based on the massless Dirac fermion (MDF) approximation for graphene π bands. It is found that the main discrepancies between the two methods come from the high-energy interband electron transitions, which are included in the ab initio method but not in the MDF method. Special attention is paid to the regime of low-particle speeds, where the MDF method compares well with the ab initio method, but the modeling is sensitive to the effects of finite temperature and the treatment of phenomenological damping. We also provide a semi-analytical analysis based on a modal decomposition of the energy loss function, for which we discuss the limit of a thick graphene-Al2O3-graphene structure.",
journal = "SFKM 2023 : The 21st Symposium on Condensed Matter Physics : Book of abstracts",
title = "Dynamic-Polarization Forces Acting On A Charged Particle Moving Over A Graphene-Sapphire-Graphene Heterostructure",
pages = "82-82",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12056"
}

Kalinić, A., Radović, I., Despoja, V., Karbunar, L.,& Mišković, Z.. (2023). Dynamic-Polarization Forces Acting On A Charged Particle Moving Over A Graphene-Sapphire-Graphene Heterostructure. in SFKM 2023 : The 21st Symposium on Condensed Matter Physics : Book of abstracts, 82-82.
https://hdl.handle.net/21.15107/rcub_vinar_12056

Kalinić A, Radović I, Despoja V, Karbunar L, Mišković Z. Dynamic-Polarization Forces Acting On A Charged Particle Moving Over A Graphene-Sapphire-Graphene Heterostructure. in SFKM 2023 : The 21st Symposium on Condensed Matter Physics : Book of abstracts. 2023;:82-82.
https://hdl.handle.net/21.15107/rcub_vinar_12056 .

Kalinić, Ana, Radović, Ivan, Despoja, Vito, Karbunar, Lazar, Mišković, Zoran, "Dynamic-Polarization Forces Acting On A Charged Particle Moving Over A Graphene-Sapphire-Graphene Heterostructure" in SFKM 2023 : The 21st Symposium on Condensed Matter Physics : Book of abstracts (2023):82-82,
https://hdl.handle.net/21.15107/rcub_vinar_12056 .

TY  - CONF
AU  - Kalinić, Ana
AU  - Radović, Ivan
AU  - Despoja, Vito
AU  - Karbunar, Lazar
AU  - Mišković, Zoran
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12074
AB  - In our previous publication [1] we studied the wake potential induced by an external charged particle that moves parallel to various sy1 -Al2O3-sy2 composites, where syi (with i=1,2) may be vacuum, pristine (undoped) graphene, or doped graphene. Several important parameters were fixed at their respective typical values: the distance of the charged particle from the closest surface, the thickness of the Al2O3 layer, and the doping density of graphene. In our recent publication [2] we presented a detailed study of the effects due to variations of all those parameters in the case of the wake potential produced by the charged particle moving parallel to the graphene-Al2O3-graphene composite system. In both mentioned publications we assumed a zero gap between graphene and insulator to simplify calculations. In this work we assign for the first time a finite gap size between graphene and insulator, and vary the speed of the projectile moving parallel to the structure and the particle distance. Using the Dyson-Schwinger equation [3] we recalculate the wake potential in the graphene-insulator-graphene heterostructure and study the effects of the graphene-insulator distance. The polarization functions of graphene sheets are obtained using two approaches within the random phase approximation [3]: an ab initio method and a method based on the massless Dirac fermion approximation. The dynamic response of the insulator layer is described by a dielectric function consisting of several Lorentzian terms.
C3  - COST 18234 Meeting in Israel : International Conference on Development of Nanocrystal Materials Through Computational Modelling : Posters abstracts
T1  - Wake Potential in Graphene-insulator-graphene Heterostructure: the Role of Graphene-insulator Distance
SP  - 5
EP  - 5
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12074
ER  - 

@conference{
author = "Kalinić, Ana and Radović, Ivan and Despoja, Vito and Karbunar, Lazar and Mišković, Zoran",
year = "2023",
abstract = "In our previous publication [1] we studied the wake potential induced by an external charged particle that moves parallel to various sy1 -Al2O3-sy2 composites, where syi (with i=1,2) may be vacuum, pristine (undoped) graphene, or doped graphene. Several important parameters were fixed at their respective typical values: the distance of the charged particle from the closest surface, the thickness of the Al2O3 layer, and the doping density of graphene. In our recent publication [2] we presented a detailed study of the effects due to variations of all those parameters in the case of the wake potential produced by the charged particle moving parallel to the graphene-Al2O3-graphene composite system. In both mentioned publications we assumed a zero gap between graphene and insulator to simplify calculations. In this work we assign for the first time a finite gap size between graphene and insulator, and vary the speed of the projectile moving parallel to the structure and the particle distance. Using the Dyson-Schwinger equation [3] we recalculate the wake potential in the graphene-insulator-graphene heterostructure and study the effects of the graphene-insulator distance. The polarization functions of graphene sheets are obtained using two approaches within the random phase approximation [3]: an ab initio method and a method based on the massless Dirac fermion approximation. The dynamic response of the insulator layer is described by a dielectric function consisting of several Lorentzian terms.",
journal = "COST 18234 Meeting in Israel : International Conference on Development of Nanocrystal Materials Through Computational Modelling : Posters abstracts",
title = "Wake Potential in Graphene-insulator-graphene Heterostructure: the Role of Graphene-insulator Distance",
pages = "5-5",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12074"
}

Kalinić, A., Radović, I., Despoja, V., Karbunar, L.,& Mišković, Z.. (2023). Wake Potential in Graphene-insulator-graphene Heterostructure: the Role of Graphene-insulator Distance. in COST 18234 Meeting in Israel : International Conference on Development of Nanocrystal Materials Through Computational Modelling : Posters abstracts, 5-5.
https://hdl.handle.net/21.15107/rcub_vinar_12074

Kalinić A, Radović I, Despoja V, Karbunar L, Mišković Z. Wake Potential in Graphene-insulator-graphene Heterostructure: the Role of Graphene-insulator Distance. in COST 18234 Meeting in Israel : International Conference on Development of Nanocrystal Materials Through Computational Modelling : Posters abstracts. 2023;:5-5.
https://hdl.handle.net/21.15107/rcub_vinar_12074 .

Kalinić, Ana, Radović, Ivan, Despoja, Vito, Karbunar, Lazar, Mišković, Zoran, "Wake Potential in Graphene-insulator-graphene Heterostructure: the Role of Graphene-insulator Distance" in COST 18234 Meeting in Israel : International Conference on Development of Nanocrystal Materials Through Computational Modelling : Posters abstracts (2023):5-5,
https://hdl.handle.net/21.15107/rcub_vinar_12074 .

TY  - JOUR
AU  - Kalinić, Ana
AU  - Radović, Ivan
AU  - Karbunar, Lazar
AU  - Despoja, Vito
AU  - Mišković, Zoran L.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11685
AB  - We study the wake effect in a graphene-Al2O3-graphene composite system induced by an external charged particle moving parallel to it by using the dynamic polarization function of graphene within the random phase approximation for its π electrons described as Dirac's fermions and by using a local dielectric function for the bulk sapphire (aluminum oxide, Al2O3). We explore the effects of variation of the particle speed, its distance from the top graphene layer, the thickness of the Al2O3 layer, the damping rate of plasmons in graphene, and the doping density (i.e., Fermi energy) of graphene on the wake potential. For the velocity of the charged particle below the threshold for excitations of the Dirac plasmon in graphene, given by its Fermi velocity , strong effects are observed due to variation of the particle distance, while for the velocity of the charged particle above strong effects are observed due to varying the thickness of the Al2O3 layer, as well as due to plasmon damping of graphene's π electrons, and graphene doping.
T2  - Physica E: Low-dimensional Systems and Nanostructures
T1  - Wake effect in interactions of ions with graphene-sapphire-graphene composite system
VL  - 126
SP  - 114447
DO  - 10.1016/j.physe.2020.114447
ER  - 

@article{
author = "Kalinić, Ana and Radović, Ivan and Karbunar, Lazar and Despoja, Vito and Mišković, Zoran L.",
year = "2021",
abstract = "We study the wake effect in a graphene-Al2O3-graphene composite system induced by an external charged particle moving parallel to it by using the dynamic polarization function of graphene within the random phase approximation for its π electrons described as Dirac's fermions and by using a local dielectric function for the bulk sapphire (aluminum oxide, Al2O3). We explore the effects of variation of the particle speed, its distance from the top graphene layer, the thickness of the Al2O3 layer, the damping rate of plasmons in graphene, and the doping density (i.e., Fermi energy) of graphene on the wake potential. For the velocity of the charged particle below the threshold for excitations of the Dirac plasmon in graphene, given by its Fermi velocity , strong effects are observed due to variation of the particle distance, while for the velocity of the charged particle above strong effects are observed due to varying the thickness of the Al2O3 layer, as well as due to plasmon damping of graphene's π electrons, and graphene doping.",
journal = "Physica E: Low-dimensional Systems and Nanostructures",
title = "Wake effect in interactions of ions with graphene-sapphire-graphene composite system",
volume = "126",
pages = "114447",
doi = "10.1016/j.physe.2020.114447"
}

Kalinić, A., Radović, I., Karbunar, L., Despoja, V.,& Mišković, Z. L.. (2021). Wake effect in interactions of ions with graphene-sapphire-graphene composite system. in Physica E: Low-dimensional Systems and Nanostructures, 126, 114447.
https://doi.org/10.1016/j.physe.2020.114447

Kalinić A, Radović I, Karbunar L, Despoja V, Mišković ZL. Wake effect in interactions of ions with graphene-sapphire-graphene composite system. in Physica E: Low-dimensional Systems and Nanostructures. 2021;126:114447.
doi:10.1016/j.physe.2020.114447 .

Kalinić, Ana, Radović, Ivan, Karbunar, Lazar, Despoja, Vito, Mišković, Zoran L., "Wake effect in interactions of ions with graphene-sapphire-graphene composite system" in Physica E: Low-dimensional Systems and Nanostructures, 126 (2021):114447,
https://doi.org/10.1016/j.physe.2020.114447 . .

TY  - CONF
AU  - Radović, Ivan
AU  - Despoja, Vito
AU  - Mišković, Zoran L.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12708
AB  - We present an analytical modeling of the experimental electron energyloss(EEL)spectroscopy data for free-standing graphene obtained by scanning transmission electron microscope using a two-dimensional, two-fluid extended hydrodynamic (eHD) model and an ab initio method [1]. An analytical expression for the probability density for energyloss of fast electrons traversing graphene under normal incidence is derived in the long wavelength limit in terms of an arbitrary form of the conductivity of graphene given in the local, i.e., frequencydependent form. The calculated probability density from both theoretical modelsis directlycompared with the EEL spectra from three independent experiments [2-4] and we find verygood agreement, especially in the case of the eHD model. Furthermore, we point out that the method of subtraction of the zero-loss peak from the experimental EEL spectra maystronglyaffect agreement with analytical models.
C3  - Autumn Prague Meeting : COST Action CA15107 meeting : Book of Abstracts
T1  - Analytical modeling of experimental EELS data for free-standing graphene
SP  - 77
EP  - 77
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12708
ER  - 

@conference{
author = "Radović, Ivan and Despoja, Vito and Mišković, Zoran L.",
year = "2019",
abstract = "We present an analytical modeling of the experimental electron energyloss(EEL)spectroscopy data for free-standing graphene obtained by scanning transmission electron microscope using a two-dimensional, two-fluid extended hydrodynamic (eHD) model and an ab initio method [1]. An analytical expression for the probability density for energyloss of fast electrons traversing graphene under normal incidence is derived in the long wavelength limit in terms of an arbitrary form of the conductivity of graphene given in the local, i.e., frequencydependent form. The calculated probability density from both theoretical modelsis directlycompared with the EEL spectra from three independent experiments [2-4] and we find verygood agreement, especially in the case of the eHD model. Furthermore, we point out that the method of subtraction of the zero-loss peak from the experimental EEL spectra maystronglyaffect agreement with analytical models.",
journal = "Autumn Prague Meeting : COST Action CA15107 meeting : Book of Abstracts",
title = "Analytical modeling of experimental EELS data for free-standing graphene",
pages = "77-77",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12708"
}

Radović, I., Despoja, V.,& Mišković, Z. L.. (2019). Analytical modeling of experimental EELS data for free-standing graphene. in Autumn Prague Meeting : COST Action CA15107 meeting : Book of Abstracts, 77-77.
https://hdl.handle.net/21.15107/rcub_vinar_12708

Radović I, Despoja V, Mišković ZL. Analytical modeling of experimental EELS data for free-standing graphene. in Autumn Prague Meeting : COST Action CA15107 meeting : Book of Abstracts. 2019;:77-77.
https://hdl.handle.net/21.15107/rcub_vinar_12708 .

Radović, Ivan, Despoja, Vito, Mišković, Zoran L., "Analytical modeling of experimental EELS data for free-standing graphene" in Autumn Prague Meeting : COST Action CA15107 meeting : Book of Abstracts (2019):77-77,
https://hdl.handle.net/21.15107/rcub_vinar_12708 .

TY  - JOUR
AU  - Politano, Antonio
AU  - Radović, Ivan
AU  - Borka, Duško
AU  - Mišković, Zoran L.
AU  - Yu, H. K.
AU  - Farias, D.
AU  - Chiarello, G.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1414
AB  - By means of angle-resolved electron energy loss spectroscopy, we have measured the interband it plasmon in high-quality graphene grown on peeled-off epitaxial Cu(111) foils. Experimental loss spectra have been reproduced by means of a hydrodynamic model. The dispersion relation of the plasmon frequency shows a nearly-flat dispersion up to a critical wave-vector of 0.3 angstrom(-1). We propose that the observed behavior could be originated by confinement effects in ripples in the strained graphene sheet. Strain also limits the dispersion at higher momenta, as a consequence of the increased effective mass of charge carriers. The analysis of momentum dependence of the line-width and of the inverse quality factor indicates that damping processes are dominated by decay in electron-hole pairs via indirect interband transitions. (C) 2016 Elsevier Ltd. All rights reserved.
T2  - Carbon
T1  - Dispersion and damping of the interband pi plasmon in graphene grown on Cu(111) foils
VL  - 114
SP  - 70
EP  - 76
DO  - 10.1016/j.carbon.2016.11.073
ER  - 

@article{
author = "Politano, Antonio and Radović, Ivan and Borka, Duško and Mišković, Zoran L. and Yu, H. K. and Farias, D. and Chiarello, G.",
year = "2017",
abstract = "By means of angle-resolved electron energy loss spectroscopy, we have measured the interband it plasmon in high-quality graphene grown on peeled-off epitaxial Cu(111) foils. Experimental loss spectra have been reproduced by means of a hydrodynamic model. The dispersion relation of the plasmon frequency shows a nearly-flat dispersion up to a critical wave-vector of 0.3 angstrom(-1). We propose that the observed behavior could be originated by confinement effects in ripples in the strained graphene sheet. Strain also limits the dispersion at higher momenta, as a consequence of the increased effective mass of charge carriers. The analysis of momentum dependence of the line-width and of the inverse quality factor indicates that damping processes are dominated by decay in electron-hole pairs via indirect interband transitions. (C) 2016 Elsevier Ltd. All rights reserved.",
journal = "Carbon",
title = "Dispersion and damping of the interband pi plasmon in graphene grown on Cu(111) foils",
volume = "114",
pages = "70-76",
doi = "10.1016/j.carbon.2016.11.073"
}

Politano, A., Radović, I., Borka, D., Mišković, Z. L., Yu, H. K., Farias, D.,& Chiarello, G.. (2017). Dispersion and damping of the interband pi plasmon in graphene grown on Cu(111) foils. in Carbon, 114, 70-76.
https://doi.org/10.1016/j.carbon.2016.11.073

Politano A, Radović I, Borka D, Mišković ZL, Yu HK, Farias D, Chiarello G. Dispersion and damping of the interband pi plasmon in graphene grown on Cu(111) foils. in Carbon. 2017;114:70-76.
doi:10.1016/j.carbon.2016.11.073 .

Politano, Antonio, Radović, Ivan, Borka, Duško, Mišković, Zoran L., Yu, H. K., Farias, D., Chiarello, G., "Dispersion and damping of the interband pi plasmon in graphene grown on Cu(111) foils" in Carbon, 114 (2017):70-76,
https://doi.org/10.1016/j.carbon.2016.11.073 . .

TY  - JOUR
AU  - Politano, Antonio
AU  - Radović, Ivan
AU  - Borka, Duško
AU  - Mišković, Zoran L.
AU  - Chiarello, G.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/842
AB  - We present a theoretical modeling of the energy-loss spectroscopy data for monolayer graphene (MLG) supported by Pt(111), Ru(0001) and Ni(111) substrates. To reproduce the experimental loss function, we have used a two-dimensional, two-fluid hydrodynamic model for interband transitions of graphenes pi and sigma electrons and an empirical Drude-Lorentz model in the local approximation for metal substrates. The electronic response from the visible to the ultraviolet frequency range has been nicely reproduced for MLG/Pt(111) and MLG/Ru(0001). For graphene nanodomes on Ru(0001), the loss function of valleys shows an additional mode at 8-9 eV. By contrast, this models fails for the case of MLG/Ni(111), presumably due to the strong hybridization between the pi states of graphene and the d bands of Ni, which is not accounted for in the model. (C) 2015 Elsevier Ltd. All rights reserved.
T2  - Carbon
T1  - Interband plasmons in supported graphene on metal substrates: Theory and experiments
VL  - 96
SP  - 91
EP  - 97
DO  - 10.1016/j.carbon.2015.09.053
ER  - 

@article{
author = "Politano, Antonio and Radović, Ivan and Borka, Duško and Mišković, Zoran L. and Chiarello, G.",
year = "2016",
abstract = "We present a theoretical modeling of the energy-loss spectroscopy data for monolayer graphene (MLG) supported by Pt(111), Ru(0001) and Ni(111) substrates. To reproduce the experimental loss function, we have used a two-dimensional, two-fluid hydrodynamic model for interband transitions of graphenes pi and sigma electrons and an empirical Drude-Lorentz model in the local approximation for metal substrates. The electronic response from the visible to the ultraviolet frequency range has been nicely reproduced for MLG/Pt(111) and MLG/Ru(0001). For graphene nanodomes on Ru(0001), the loss function of valleys shows an additional mode at 8-9 eV. By contrast, this models fails for the case of MLG/Ni(111), presumably due to the strong hybridization between the pi states of graphene and the d bands of Ni, which is not accounted for in the model. (C) 2015 Elsevier Ltd. All rights reserved.",
journal = "Carbon",
title = "Interband plasmons in supported graphene on metal substrates: Theory and experiments",
volume = "96",
pages = "91-97",
doi = "10.1016/j.carbon.2015.09.053"
}

Politano, A., Radović, I., Borka, D., Mišković, Z. L.,& Chiarello, G.. (2016). Interband plasmons in supported graphene on metal substrates: Theory and experiments. in Carbon, 96, 91-97.
https://doi.org/10.1016/j.carbon.2015.09.053

Politano A, Radović I, Borka D, Mišković ZL, Chiarello G. Interband plasmons in supported graphene on metal substrates: Theory and experiments. in Carbon. 2016;96:91-97.
doi:10.1016/j.carbon.2015.09.053 .

Politano, Antonio, Radović, Ivan, Borka, Duško, Mišković, Zoran L., Chiarello, G., "Interband plasmons in supported graphene on metal substrates: Theory and experiments" in Carbon, 96 (2016):91-97,
https://doi.org/10.1016/j.carbon.2015.09.053 . .

TY  - JOUR
AU  - Marinković, Tijana
AU  - Radović, Ivan
AU  - Borka, Duško
AU  - Mišković, Zoran L.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/377
AB  - We study correlated motion of two ions resulting from a dissociative grazing scattering of a slow diatomic molecular ion on supported graphene. A low-frequency collective mode resulting from hybridization of graphenes Dirac plasmon and the optical phonon modes in the insulating substrate may be excited by matching its phase velocity with the ion speed lower than the graphene Fermi speed. The resulting wake effect gives rise to the strongly directional, oscillatory patterns in both the inter-particle interaction potential and the total stopping power for the two ions, which may be detectable in their angular and the energy loss spectra. (C) 2014 Elsevier B.V. All rights reserved.
T2  - Physics Letters A
T1  - Wake effect in the interaction of slow correlated charges with supported graphene due to plasmon-phonon hybridization
VL  - 379
IS  - 4
SP  - 377
EP  - 381
DO  - 10.1016/j.physleta.2014.11.044
ER  - 

@article{
author = "Marinković, Tijana and Radović, Ivan and Borka, Duško and Mišković, Zoran L.",
year = "2015",
abstract = "We study correlated motion of two ions resulting from a dissociative grazing scattering of a slow diatomic molecular ion on supported graphene. A low-frequency collective mode resulting from hybridization of graphenes Dirac plasmon and the optical phonon modes in the insulating substrate may be excited by matching its phase velocity with the ion speed lower than the graphene Fermi speed. The resulting wake effect gives rise to the strongly directional, oscillatory patterns in both the inter-particle interaction potential and the total stopping power for the two ions, which may be detectable in their angular and the energy loss spectra. (C) 2014 Elsevier B.V. All rights reserved.",
journal = "Physics Letters A",
title = "Wake effect in the interaction of slow correlated charges with supported graphene due to plasmon-phonon hybridization",
volume = "379",
number = "4",
pages = "377-381",
doi = "10.1016/j.physleta.2014.11.044"
}

Marinković, T., Radović, I., Borka, D.,& Mišković, Z. L.. (2015). Wake effect in the interaction of slow correlated charges with supported graphene due to plasmon-phonon hybridization. in Physics Letters A, 379(4), 377-381.
https://doi.org/10.1016/j.physleta.2014.11.044

Marinković T, Radović I, Borka D, Mišković ZL. Wake effect in the interaction of slow correlated charges with supported graphene due to plasmon-phonon hybridization. in Physics Letters A. 2015;379(4):377-381.
doi:10.1016/j.physleta.2014.11.044 .

Marinković, Tijana, Radović, Ivan, Borka, Duško, Mišković, Zoran L., "Wake effect in the interaction of slow correlated charges with supported graphene due to plasmon-phonon hybridization" in Physics Letters A, 379, no. 4 (2015):377-381,
https://doi.org/10.1016/j.physleta.2014.11.044 . .

TY  - JOUR
AU  - Karbunar, Lazar
AU  - Borka, Duško
AU  - Radović, Ivan
AU  - Mišković, Zoran L.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/690
AB  - We study the interaction of charged particles with four different types of single-walled carbon nanotubes (SWNTs) under channeling conditions by means of the linearized, two dimensional, one-fluid and two-fluid hydrodynamic models. The models are used to calculate the image potential for protons moving parallel to the axis of the SWNTs at the speeds up to 10 a.u. Numerical results are obtained to show the influence of the damping factor, the nanotube radius, and the particle position on the image potential inside the nanotube. We also compute the spatial and angular distributions of protons and compare them for the two models. (C) 2015 Elsevier B.V. All rights reserved.
T2  - Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
T1  - Image potential in the interaction of fast ions with carbon nanotubes: A comparison between the one- and two-fluid hydrodynamic models
VL  - 358
SP  - 82
EP  - 87
DO  - 10.1016/j.nimb.2015.05.041
ER  - 

@article{
author = "Karbunar, Lazar and Borka, Duško and Radović, Ivan and Mišković, Zoran L.",
year = "2015",
abstract = "We study the interaction of charged particles with four different types of single-walled carbon nanotubes (SWNTs) under channeling conditions by means of the linearized, two dimensional, one-fluid and two-fluid hydrodynamic models. The models are used to calculate the image potential for protons moving parallel to the axis of the SWNTs at the speeds up to 10 a.u. Numerical results are obtained to show the influence of the damping factor, the nanotube radius, and the particle position on the image potential inside the nanotube. We also compute the spatial and angular distributions of protons and compare them for the two models. (C) 2015 Elsevier B.V. All rights reserved.",
journal = "Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms",
title = "Image potential in the interaction of fast ions with carbon nanotubes: A comparison between the one- and two-fluid hydrodynamic models",
volume = "358",
pages = "82-87",
doi = "10.1016/j.nimb.2015.05.041"
}

Karbunar, L., Borka, D., Radović, I.,& Mišković, Z. L.. (2015). Image potential in the interaction of fast ions with carbon nanotubes: A comparison between the one- and two-fluid hydrodynamic models. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 358, 82-87.
https://doi.org/10.1016/j.nimb.2015.05.041

Karbunar L, Borka D, Radović I, Mišković ZL. Image potential in the interaction of fast ions with carbon nanotubes: A comparison between the one- and two-fluid hydrodynamic models. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms. 2015;358:82-87.
doi:10.1016/j.nimb.2015.05.041 .

Karbunar, Lazar, Borka, Duško, Radović, Ivan, Mišković, Zoran L., "Image potential in the interaction of fast ions with carbon nanotubes: A comparison between the one- and two-fluid hydrodynamic models" in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 358 (2015):82-87,
https://doi.org/10.1016/j.nimb.2015.05.041 . .

TY  - CONF
AU  - Radović, Ivan
AU  - Borka, Duško
AU  - Mišković, Zoran L.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7046
AB  - We study the wake effect in a supported graphene layer induced by external charged particles moving parallel to it by using the dynamic polarization function of graphene within the random phase approximation for its pi electrons described as Diracs fermions. We explore the effects of a substrate assuming that graphene is supported by an insulating substrate, such as SiO2, and a strongly polar substrate, such as SiC, under the gating conditions. Strong effects are observed in the wake pattern in the induced density of charge carriers in supported graphene due to finite size of the graphene-substrate gap, as well as due to strong coupling effects, and plasmon damping of graphenes pi electrons. We find that the excitation of surface phonons in the substrate may exert quite strong influences on the wake effect in the total electrostatic potential in the graphene plane at low particle speeds.
C3  - Journal of Physics: Conference Series
T1  - Wake effect in graphene due to moving charged particles
VL  - 565
DO  - 10.1088/1742-6596/565/1/012009
ER  - 

@conference{
author = "Radović, Ivan and Borka, Duško and Mišković, Zoran L.",
year = "2014",
abstract = "We study the wake effect in a supported graphene layer induced by external charged particles moving parallel to it by using the dynamic polarization function of graphene within the random phase approximation for its pi electrons described as Diracs fermions. We explore the effects of a substrate assuming that graphene is supported by an insulating substrate, such as SiO2, and a strongly polar substrate, such as SiC, under the gating conditions. Strong effects are observed in the wake pattern in the induced density of charge carriers in supported graphene due to finite size of the graphene-substrate gap, as well as due to strong coupling effects, and plasmon damping of graphenes pi electrons. We find that the excitation of surface phonons in the substrate may exert quite strong influences on the wake effect in the total electrostatic potential in the graphene plane at low particle speeds.",
journal = "Journal of Physics: Conference Series",
title = "Wake effect in graphene due to moving charged particles",
volume = "565",
doi = "10.1088/1742-6596/565/1/012009"
}

Radović, I., Borka, D.,& Mišković, Z. L.. (2014). Wake effect in graphene due to moving charged particles. in Journal of Physics: Conference Series, 565.
https://doi.org/10.1088/1742-6596/565/1/012009

Radović I, Borka D, Mišković ZL. Wake effect in graphene due to moving charged particles. in Journal of Physics: Conference Series. 2014;565.
doi:10.1088/1742-6596/565/1/012009 .

Radović, Ivan, Borka, Duško, Mišković, Zoran L., "Wake effect in graphene due to moving charged particles" in Journal of Physics: Conference Series, 565 (2014),
https://doi.org/10.1088/1742-6596/565/1/012009 . .

TY  - JOUR
AU  - Radović, Ivan
AU  - Borka Jovanović, Vesna
AU  - Borka, Duško
AU  - Mišković, Zoran L.
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6958
AB  - We study dynamic polarization of single-layer graphene lying on a strongly polar substrate, such as SiC, induced by an external charged particle that moves slowly parallel to graphene. Calculations of the total electrostatic potential in the graphene plane, as well as of the stopping and image forces on the external particle are performed by means of graphenes dielectric function within the random phase approximation. We find that the excitation of surface phonons in the substrate may exert quite strong influences on the wake effect in the potential at low particle speeds, as well as on the magnitudes of both forces at high particle speeds. (C) 2011 Elsevier B.V. All rights reserved.
T2  - Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
T1  - Interactions of slowly moving charges with graphene: The role of substrate phonons
VL  - 279
SP  - 165
EP  - 168
DO  - 10.1016/j.nimb.2011.10.028
ER  - 

@article{
author = "Radović, Ivan and Borka Jovanović, Vesna and Borka, Duško and Mišković, Zoran L.",
year = "2012",
abstract = "We study dynamic polarization of single-layer graphene lying on a strongly polar substrate, such as SiC, induced by an external charged particle that moves slowly parallel to graphene. Calculations of the total electrostatic potential in the graphene plane, as well as of the stopping and image forces on the external particle are performed by means of graphenes dielectric function within the random phase approximation. We find that the excitation of surface phonons in the substrate may exert quite strong influences on the wake effect in the potential at low particle speeds, as well as on the magnitudes of both forces at high particle speeds. (C) 2011 Elsevier B.V. All rights reserved.",
journal = "Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms",
title = "Interactions of slowly moving charges with graphene: The role of substrate phonons",
volume = "279",
pages = "165-168",
doi = "10.1016/j.nimb.2011.10.028"
}

Radović, I., Borka Jovanović, V., Borka, D.,& Mišković, Z. L.. (2012). Interactions of slowly moving charges with graphene: The role of substrate phonons. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 279, 165-168.
https://doi.org/10.1016/j.nimb.2011.10.028

Radović I, Borka Jovanović V, Borka D, Mišković ZL. Interactions of slowly moving charges with graphene: The role of substrate phonons. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms. 2012;279:165-168.
doi:10.1016/j.nimb.2011.10.028 .

Radović, Ivan, Borka Jovanović, Vesna, Borka, Duško, Mišković, Zoran L., "Interactions of slowly moving charges with graphene: The role of substrate phonons" in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 279 (2012):165-168,
https://doi.org/10.1016/j.nimb.2011.10.028 . .

TY  - JOUR
AU  - Radović, Ivan
AU  - Borka, Duško
AU  - Mišković, Zoran L.
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5049
AB  - We use the dielectric response formalism within random phase approximation for graphenes pi-electron bands to study polarization of doped, single-layer graphene in the presence of a moving dipole and a pair of comoving ions, as well as to study the electrostatic part of the long-range interaction in the coadsorption of two ions and two dipoles on graphene. We find that the vector components of both the force and the torque on the moving dipole include both the conservative and dissipative contributions, whereas the wake in the induced charge density in graphene shows asymmetry with respect to the direction of dipoles motion. Furthermore, the screened interaction energy between two comoving ions shows oscillations as a function of the interionic separation that may give rise to a wake-riding bound state of the ions, whereas the total energy loss of those ions shows both constructive and destructive interference effects in comparison with the energy loss of independent ions. In the case of static coadsorption on doped graphene, strong screening of the ion-ion electrostatic interaction energy is found as a function of their separation, whereas antiscreening is found in the interaction energy between two dipoles having dipole moments perpendicular to graphene. In addition, shallow minima are found in the interaction energies at finite separations between two ions and between two dipoles having dipole moments parallel to graphene due to Friedel oscillations, which are shown to be much weaker than in the case of coadsorption on a comparable two-dimensional electron gas with single parabolic energy band. It is shown that the interaction of graphene with all the above model systems may be effectively controlled by changing the doping density of graphene.
T2  - Physical Review B: Condensed Matter and Materials Physics
T1  - Dynamic polarization of graphene by external correlated charges
VL  - 86
IS  - 12
DO  - 10.1103/PhysRevB.86.125442
ER  - 

@article{
author = "Radović, Ivan and Borka, Duško and Mišković, Zoran L.",
year = "2012",
abstract = "We use the dielectric response formalism within random phase approximation for graphenes pi-electron bands to study polarization of doped, single-layer graphene in the presence of a moving dipole and a pair of comoving ions, as well as to study the electrostatic part of the long-range interaction in the coadsorption of two ions and two dipoles on graphene. We find that the vector components of both the force and the torque on the moving dipole include both the conservative and dissipative contributions, whereas the wake in the induced charge density in graphene shows asymmetry with respect to the direction of dipoles motion. Furthermore, the screened interaction energy between two comoving ions shows oscillations as a function of the interionic separation that may give rise to a wake-riding bound state of the ions, whereas the total energy loss of those ions shows both constructive and destructive interference effects in comparison with the energy loss of independent ions. In the case of static coadsorption on doped graphene, strong screening of the ion-ion electrostatic interaction energy is found as a function of their separation, whereas antiscreening is found in the interaction energy between two dipoles having dipole moments perpendicular to graphene. In addition, shallow minima are found in the interaction energies at finite separations between two ions and between two dipoles having dipole moments parallel to graphene due to Friedel oscillations, which are shown to be much weaker than in the case of coadsorption on a comparable two-dimensional electron gas with single parabolic energy band. It is shown that the interaction of graphene with all the above model systems may be effectively controlled by changing the doping density of graphene.",
journal = "Physical Review B: Condensed Matter and Materials Physics",
title = "Dynamic polarization of graphene by external correlated charges",
volume = "86",
number = "12",
doi = "10.1103/PhysRevB.86.125442"
}

Radović, I., Borka, D.,& Mišković, Z. L.. (2012). Dynamic polarization of graphene by external correlated charges. in Physical Review B: Condensed Matter and Materials Physics, 86(12).
https://doi.org/10.1103/PhysRevB.86.125442

Radović I, Borka D, Mišković ZL. Dynamic polarization of graphene by external correlated charges. in Physical Review B: Condensed Matter and Materials Physics. 2012;86(12).
doi:10.1103/PhysRevB.86.125442 .

Radović, Ivan, Borka, Duško, Mišković, Zoran L., "Dynamic polarization of graphene by external correlated charges" in Physical Review B: Condensed Matter and Materials Physics, 86, no. 12 (2012),
https://doi.org/10.1103/PhysRevB.86.125442 . .

TY  - JOUR
AU  - Borka Jovanović, Vesna
AU  - Radović, Ivan
AU  - Borka, Duško
AU  - Mišković, Zoran L.
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4344
AB  - We present several applications of the layered electron gas model to electron energy loss spectroscopy of freestanding films consisting of N graphene layers in a scanning transmission electron microscope. Using a two-fluid model for the single-layer polarizability, we discuss the evolution of high-energy plasmon spectra with N and find good agreement with the recent experimental data for both multilayer graphene with N LT 10 and thick slabs of graphite. Such applications of these analytical models help shed light on several features observed in the plasmon spectra of those structures, including the role of plasmon dispersion, dynamic interference in excitations of various plasmon eigenmodes, as well as the relevance of the bulk plasmon bands, rather than surface plasmons, in classifying the plasmon peaks.
T2  - Physical Review B: Condensed Matter and Materials Physics
T1  - High-energy plasmon spectroscopy of freestanding multilayer graphene
VL  - 84
IS  - 15
DO  - 10.1103/PhysRevB.84.155416
ER  - 

@article{
author = "Borka Jovanović, Vesna and Radović, Ivan and Borka, Duško and Mišković, Zoran L.",
year = "2011",
abstract = "We present several applications of the layered electron gas model to electron energy loss spectroscopy of freestanding films consisting of N graphene layers in a scanning transmission electron microscope. Using a two-fluid model for the single-layer polarizability, we discuss the evolution of high-energy plasmon spectra with N and find good agreement with the recent experimental data for both multilayer graphene with N LT 10 and thick slabs of graphite. Such applications of these analytical models help shed light on several features observed in the plasmon spectra of those structures, including the role of plasmon dispersion, dynamic interference in excitations of various plasmon eigenmodes, as well as the relevance of the bulk plasmon bands, rather than surface plasmons, in classifying the plasmon peaks.",
journal = "Physical Review B: Condensed Matter and Materials Physics",
title = "High-energy plasmon spectroscopy of freestanding multilayer graphene",
volume = "84",
number = "15",
doi = "10.1103/PhysRevB.84.155416"
}

Borka Jovanović, V., Radović, I., Borka, D.,& Mišković, Z. L.. (2011). High-energy plasmon spectroscopy of freestanding multilayer graphene. in Physical Review B: Condensed Matter and Materials Physics, 84(15).
https://doi.org/10.1103/PhysRevB.84.155416

Borka Jovanović V, Radović I, Borka D, Mišković ZL. High-energy plasmon spectroscopy of freestanding multilayer graphene. in Physical Review B: Condensed Matter and Materials Physics. 2011;84(15).
doi:10.1103/PhysRevB.84.155416 .

Borka Jovanović, Vesna, Radović, Ivan, Borka, Duško, Mišković, Zoran L., "High-energy plasmon spectroscopy of freestanding multilayer graphene" in Physical Review B: Condensed Matter and Materials Physics, 84, no. 15 (2011),
https://doi.org/10.1103/PhysRevB.84.155416 . .

TY  - CONF
AU  - Radović, Ivan
AU  - Bibić, Nataša M.
AU  - Mišković, Zoran L.
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6908
AB  - We evaluate the stopping and image forces on a charged particle moving parallel to a single sheet of graphene supported by an insulating substrate under the gating conditions. The forces are presented as functions of the particle speed and the particle distance for a broad range of charge-carrier densities in graphene. We also consider the effects of a finite gap between graphene and a supporting substrate, as well as the effects of a finite damping rate that is included through the use of Mermins procedure. The damping rate is estimated from a tentative comparison of the Mermin loss function with a high-resolution reflection electron energy loss spectroscopy experiment.
C3  - Journal of Physics: Conference Series
T1  - Interactions of ions with graphene
VL  - 257
DO  - 10.1088/1742-6596/257/1/012011
ER  - 

@conference{
author = "Radović, Ivan and Bibić, Nataša M. and Mišković, Zoran L.",
year = "2010",
abstract = "We evaluate the stopping and image forces on a charged particle moving parallel to a single sheet of graphene supported by an insulating substrate under the gating conditions. The forces are presented as functions of the particle speed and the particle distance for a broad range of charge-carrier densities in graphene. We also consider the effects of a finite gap between graphene and a supporting substrate, as well as the effects of a finite damping rate that is included through the use of Mermins procedure. The damping rate is estimated from a tentative comparison of the Mermin loss function with a high-resolution reflection electron energy loss spectroscopy experiment.",
journal = "Journal of Physics: Conference Series",
title = "Interactions of ions with graphene",
volume = "257",
doi = "10.1088/1742-6596/257/1/012011"
}

Radović, I., Bibić, N. M.,& Mišković, Z. L.. (2010). Interactions of ions with graphene. in Journal of Physics: Conference Series, 257.
https://doi.org/10.1088/1742-6596/257/1/012011

Radović I, Bibić NM, Mišković ZL. Interactions of ions with graphene. in Journal of Physics: Conference Series. 2010;257.
doi:10.1088/1742-6596/257/1/012011 .

Radović, Ivan, Bibić, Nataša M., Mišković, Zoran L., "Interactions of ions with graphene" in Journal of Physics: Conference Series, 257 (2010),
https://doi.org/10.1088/1742-6596/257/1/012011 . .

TY  - JOUR
AU  - Borka, Duško
AU  - Mowbray, Duncan J.
AU  - Mišković, Zoran L.
AU  - Petrović, Srđan M.
AU  - Nešković, Nebojša B.
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3978
AB  - We investigate the angular and spatial distributions of protons with an energy of 0.223 MeV after channeling them through an (11, 9) single-wall carbon nanotube of 0.2 mu m length. The proton incident angle is varied between 0 and 10 mrad, being close to the critical angle for channeling. We show that, as the proton incident angle increases and approaches the critical angle for channeling, a ring-like structure is developed in the angular distribution-the donut effect. We demonstrate that it is the rainbow effect. If the proton incident angle is between zero and half of the critical angle for channeling, the image force affects considerably the number and positions of the maxima of the angular and spatial distributions. However, if the proton incident angle is close to the critical angle for channeling, its influence on the angular and spatial distributions is considerably decreased. We demonstrate that an increase of the proton incident angle can lead to a significant rearrangement of the propagating protons within the nanotube. This effect may be used to locate atomic impurities in nanotubes as well as for creating nanosized proton beams to be used in materials science, biology and medicine.
T2  - New Journal of Physics
T1  - The donut and dynamic polarization effects in proton channeling through carbon nanotubes
VL  - 12
DO  - 10.1088/1367-2630/12/4/043021
ER  - 

@article{
author = "Borka, Duško and Mowbray, Duncan J. and Mišković, Zoran L. and Petrović, Srđan M. and Nešković, Nebojša B.",
year = "2010",
abstract = "We investigate the angular and spatial distributions of protons with an energy of 0.223 MeV after channeling them through an (11, 9) single-wall carbon nanotube of 0.2 mu m length. The proton incident angle is varied between 0 and 10 mrad, being close to the critical angle for channeling. We show that, as the proton incident angle increases and approaches the critical angle for channeling, a ring-like structure is developed in the angular distribution-the donut effect. We demonstrate that it is the rainbow effect. If the proton incident angle is between zero and half of the critical angle for channeling, the image force affects considerably the number and positions of the maxima of the angular and spatial distributions. However, if the proton incident angle is close to the critical angle for channeling, its influence on the angular and spatial distributions is considerably decreased. We demonstrate that an increase of the proton incident angle can lead to a significant rearrangement of the propagating protons within the nanotube. This effect may be used to locate atomic impurities in nanotubes as well as for creating nanosized proton beams to be used in materials science, biology and medicine.",
journal = "New Journal of Physics",
title = "The donut and dynamic polarization effects in proton channeling through carbon nanotubes",
volume = "12",
doi = "10.1088/1367-2630/12/4/043021"
}

Borka, D., Mowbray, D. J., Mišković, Z. L., Petrović, S. M.,& Nešković, N. B.. (2010). The donut and dynamic polarization effects in proton channeling through carbon nanotubes. in New Journal of Physics, 12.
https://doi.org/10.1088/1367-2630/12/4/043021

Borka D, Mowbray DJ, Mišković ZL, Petrović SM, Nešković NB. The donut and dynamic polarization effects in proton channeling through carbon nanotubes. in New Journal of Physics. 2010;12.
doi:10.1088/1367-2630/12/4/043021 .

Borka, Duško, Mowbray, Duncan J., Mišković, Zoran L., Petrović, Srđan M., Nešković, Nebojša B., "The donut and dynamic polarization effects in proton channeling through carbon nanotubes" in New Journal of Physics, 12 (2010),
https://doi.org/10.1088/1367-2630/12/4/043021 . .

TY  - JOUR
AU  - Radović, Ivan
AU  - Hadžievski, Ljupčo
AU  - Bibić, Nataša M.
AU  - Mišković, Zoran L.
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3825
AB  - We study the interactions of fast charged particles with a two-dimensional electron gas describing its collective or plasmon excitations by a hydrodynamic model with the parameters characteristic of graphene. We solve the sets of first and second order equations in a perturbational treatment of the hydrodynamic model, and obtain numerical results for the stopping force and the image force on a particle moving parallel to the electron gas. Although the second order effects in these forces are relatively small, they could be observed in experiments on grazing scattering of, e.g., fast protons and antiprotons from the surface of graphene. (C) 2009 Elsevier B.V. All rights reserved.
T2  - Materials Chemistry and Physics
T1  - Non-linear effects in the forces acting on fast charged particles passing over two-dimensional electron gas
VL  - 118
IS  - 2-3
SP  - 293
EP  - 297
DO  - 10.1016/j.matchemphys.2009.07.059
ER  - 

@article{
author = "Radović, Ivan and Hadžievski, Ljupčo and Bibić, Nataša M. and Mišković, Zoran L.",
year = "2009",
abstract = "We study the interactions of fast charged particles with a two-dimensional electron gas describing its collective or plasmon excitations by a hydrodynamic model with the parameters characteristic of graphene. We solve the sets of first and second order equations in a perturbational treatment of the hydrodynamic model, and obtain numerical results for the stopping force and the image force on a particle moving parallel to the electron gas. Although the second order effects in these forces are relatively small, they could be observed in experiments on grazing scattering of, e.g., fast protons and antiprotons from the surface of graphene. (C) 2009 Elsevier B.V. All rights reserved.",
journal = "Materials Chemistry and Physics",
title = "Non-linear effects in the forces acting on fast charged particles passing over two-dimensional electron gas",
volume = "118",
number = "2-3",
pages = "293-297",
doi = "10.1016/j.matchemphys.2009.07.059"
}

Radović, I., Hadžievski, L., Bibić, N. M.,& Mišković, Z. L.. (2009). Non-linear effects in the forces acting on fast charged particles passing over two-dimensional electron gas. in Materials Chemistry and Physics, 118(2-3), 293-297.
https://doi.org/10.1016/j.matchemphys.2009.07.059

Radović I, Hadžievski L, Bibić NM, Mišković ZL. Non-linear effects in the forces acting on fast charged particles passing over two-dimensional electron gas. in Materials Chemistry and Physics. 2009;118(2-3):293-297.
doi:10.1016/j.matchemphys.2009.07.059 .

Radović, Ivan, Hadžievski, Ljupčo, Bibić, Nataša M., Mišković, Zoran L., "Non-linear effects in the forces acting on fast charged particles passing over two-dimensional electron gas" in Materials Chemistry and Physics, 118, no. 2-3 (2009):293-297,
https://doi.org/10.1016/j.matchemphys.2009.07.059 . .

TY  - JOUR
AU  - Allison, K. F.
AU  - Borka, Duško
AU  - Radović, Ivan
AU  - Hadžievski, Ljupčo
AU  - Mišković, Zoran L.
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3838
AB  - We evaluate the stopping and image forces on a charged particle moving parallel to a doped sheet of graphene by using the dielectric-response formalism for graphenes pi-electron bands in the random phase approximation (RPA). The forces are presented as functions of the particle speed and the particle distance for a broad range of charge-carrier densities in graphene. A detailed comparison with the results from a kinetic equation model reveal the importance of interband single-particle excitations in the RPA model for high particle speeds. We also consider the effects of a finite gap between graphene and a supporting substrate, as well as the effects of a finite damping rate that is included through the use of Mermins procedure. The damping rate is estimated from a tentative comparison of the Mermin loss function with a high-resolution reflection electron energy loss spectroscopy experiment. In the limit of low particle speeds, several analytical results are obtained for the friction coefficient that show an intricate relationship between the charge-carrier density, the damping rate, and the particle distance, which may be relevant to surface processes and electrochemistry involving graphene.
T2  - Physical Review B: Condensed Matter and Materials Physics
T1  - Dynamic polarization of graphene by moving external charges: Random phase approximation
VL  - 80
IS  - 19
DO  - 10.1103/PhysRevB.80.195405
ER  - 

@article{
author = "Allison, K. F. and Borka, Duško and Radović, Ivan and Hadžievski, Ljupčo and Mišković, Zoran L.",
year = "2009",
abstract = "We evaluate the stopping and image forces on a charged particle moving parallel to a doped sheet of graphene by using the dielectric-response formalism for graphenes pi-electron bands in the random phase approximation (RPA). The forces are presented as functions of the particle speed and the particle distance for a broad range of charge-carrier densities in graphene. A detailed comparison with the results from a kinetic equation model reveal the importance of interband single-particle excitations in the RPA model for high particle speeds. We also consider the effects of a finite gap between graphene and a supporting substrate, as well as the effects of a finite damping rate that is included through the use of Mermins procedure. The damping rate is estimated from a tentative comparison of the Mermin loss function with a high-resolution reflection electron energy loss spectroscopy experiment. In the limit of low particle speeds, several analytical results are obtained for the friction coefficient that show an intricate relationship between the charge-carrier density, the damping rate, and the particle distance, which may be relevant to surface processes and electrochemistry involving graphene.",
journal = "Physical Review B: Condensed Matter and Materials Physics",
title = "Dynamic polarization of graphene by moving external charges: Random phase approximation",
volume = "80",
number = "19",
doi = "10.1103/PhysRevB.80.195405"
}

Allison, K. F., Borka, D., Radović, I., Hadžievski, L.,& Mišković, Z. L.. (2009). Dynamic polarization of graphene by moving external charges: Random phase approximation. in Physical Review B: Condensed Matter and Materials Physics, 80(19).
https://doi.org/10.1103/PhysRevB.80.195405

Allison KF, Borka D, Radović I, Hadžievski L, Mišković ZL. Dynamic polarization of graphene by moving external charges: Random phase approximation. in Physical Review B: Condensed Matter and Materials Physics. 2009;80(19).
doi:10.1103/PhysRevB.80.195405 .

Allison, K. F., Borka, Duško, Radović, Ivan, Hadžievski, Ljupčo, Mišković, Zoran L., "Dynamic polarization of graphene by moving external charges: Random phase approximation" in Physical Review B: Condensed Matter and Materials Physics, 80, no. 19 (2009),
https://doi.org/10.1103/PhysRevB.80.195405 . .

TY  - JOUR
AU  - Borka, Duško
AU  - Mowbray, Duncan J.
AU  - Mišković, Zoran L.
AU  - Petrović, Srđan M.
AU  - Nešković, Nebojša B.
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6784
AB  - We investigate how the dynamic polarization of the carbon atom valence electrons affects the spatial distributions of protons channeled in (11, 9) single-wall carbon nanotubes placed in vacuum and embedded in various dielectric media. The initial proton speed is varied between 3 and 8 a.u., corresponding to the energies between 0.223 and 1.59 MeV, respectively, while the nanotube length is varied between 0.1 and 0.8 mu m. The spatial distributions of channeled protons are generated using a computer simulation method, which includes the numerical solving of the proton equations of motion in the transverse plane. We show that the dynamic polarization effect can strongly affect the rainbow maxima in the spatial distributions, so as to increase the proton flux at distances from the nanotube wall of the order of a few tenths of a nanometer at the expense of the flux at the nanotube center. While our findings are connected to the possible applications of nanosized ion beams created with the nanotubes embedded in various dielectric media for biomedical research and in materials modification, they also open prospects of applying ion channeling for detecting and locating atoms and molecules intercalated inside the nanotubes.
T2  - Journal of Physics: Condensed Matter
T1  - Channeling of protons through carbon nanotubes embedded in dielectric media
VL  - 20
IS  - 47
DO  - 10.1088/0953-8984/20/47/474212
ER  - 

@article{
author = "Borka, Duško and Mowbray, Duncan J. and Mišković, Zoran L. and Petrović, Srđan M. and Nešković, Nebojša B.",
year = "2008",
abstract = "We investigate how the dynamic polarization of the carbon atom valence electrons affects the spatial distributions of protons channeled in (11, 9) single-wall carbon nanotubes placed in vacuum and embedded in various dielectric media. The initial proton speed is varied between 3 and 8 a.u., corresponding to the energies between 0.223 and 1.59 MeV, respectively, while the nanotube length is varied between 0.1 and 0.8 mu m. The spatial distributions of channeled protons are generated using a computer simulation method, which includes the numerical solving of the proton equations of motion in the transverse plane. We show that the dynamic polarization effect can strongly affect the rainbow maxima in the spatial distributions, so as to increase the proton flux at distances from the nanotube wall of the order of a few tenths of a nanometer at the expense of the flux at the nanotube center. While our findings are connected to the possible applications of nanosized ion beams created with the nanotubes embedded in various dielectric media for biomedical research and in materials modification, they also open prospects of applying ion channeling for detecting and locating atoms and molecules intercalated inside the nanotubes.",
journal = "Journal of Physics: Condensed Matter",
title = "Channeling of protons through carbon nanotubes embedded in dielectric media",
volume = "20",
number = "47",
doi = "10.1088/0953-8984/20/47/474212"
}

Borka, D., Mowbray, D. J., Mišković, Z. L., Petrović, S. M.,& Nešković, N. B.. (2008). Channeling of protons through carbon nanotubes embedded in dielectric media. in Journal of Physics: Condensed Matter, 20(47).
https://doi.org/10.1088/0953-8984/20/47/474212

Borka D, Mowbray DJ, Mišković ZL, Petrović SM, Nešković NB. Channeling of protons through carbon nanotubes embedded in dielectric media. in Journal of Physics: Condensed Matter. 2008;20(47).
doi:10.1088/0953-8984/20/47/474212 .

Borka, Duško, Mowbray, Duncan J., Mišković, Zoran L., Petrović, Srđan M., Nešković, Nebojša B., "Channeling of protons through carbon nanotubes embedded in dielectric media" in Journal of Physics: Condensed Matter, 20, no. 47 (2008),
https://doi.org/10.1088/0953-8984/20/47/474212 . .

TY  - CONF
AU  - Borka, Duško
AU  - Mowbray, Duncan J.
AU  - Mišković, Zoran L.
AU  - Petrović, Srđan M.
AU  - Nešković, Nebojša B.
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6795
AB  - We investigate how dynamic polarization of carbon valence electrons influences both the angular and spatial distributions of protons channeled in a (11, 9) single-wall carbon nanotube placed in vacuum and in different dielectric media. Proton speeds between 3 and 10 a.u., corresponding to energies of 0.223 and 2.49 MeV, are chosen with the nanotube length varied between 0.1 and 1 mu m. In all performed calculations we describe the interaction between proton and carbon atoms on the nanotube wall using the Doyle-Turner potential. The image force on a proton is calculated using a two-dimensional hydrodynamic model for the dynamic response of the nanotube valence electrons and the dielectric media surrounding the nanotube. The angular distributions of channeled protons axe generated using a computer simulation method which solves the proton equations of motion in the transverse plane numerically. The best level of ordering and straightening of carbon nanotube arrays is often achieved when they are grown in a dielectric matrix. Consequently, we investigate here how the dynamic polarization of carbon valence electrons in the presence of various surrounding dielectric media affects the angular distributions of protons channeled through (11, 9) single-wall carbon nanotubes. Our analysis shows that the inclusion of the image interaction, gives rise to a number of rainbow maxima in the corresponding angular and spatial distribution. Our analysis shows that the presence of dielectric media surrounding the nanotube influences the positions and appearance of rainbows in the corresponding angular and spatial distributions. In addition, we analyze the possibility of production of nano-sized beams by carbon nanotubes.
C3  - Journal of Physics: Conference Series
T1  - Channeling of protons through carbon nanotubes
VL  - 133
DO  - 10.1088/1742-6596/133/1/012015
ER  - 

@conference{
author = "Borka, Duško and Mowbray, Duncan J. and Mišković, Zoran L. and Petrović, Srđan M. and Nešković, Nebojša B.",
year = "2008",
abstract = "We investigate how dynamic polarization of carbon valence electrons influences both the angular and spatial distributions of protons channeled in a (11, 9) single-wall carbon nanotube placed in vacuum and in different dielectric media. Proton speeds between 3 and 10 a.u., corresponding to energies of 0.223 and 2.49 MeV, are chosen with the nanotube length varied between 0.1 and 1 mu m. In all performed calculations we describe the interaction between proton and carbon atoms on the nanotube wall using the Doyle-Turner potential. The image force on a proton is calculated using a two-dimensional hydrodynamic model for the dynamic response of the nanotube valence electrons and the dielectric media surrounding the nanotube. The angular distributions of channeled protons axe generated using a computer simulation method which solves the proton equations of motion in the transverse plane numerically. The best level of ordering and straightening of carbon nanotube arrays is often achieved when they are grown in a dielectric matrix. Consequently, we investigate here how the dynamic polarization of carbon valence electrons in the presence of various surrounding dielectric media affects the angular distributions of protons channeled through (11, 9) single-wall carbon nanotubes. Our analysis shows that the inclusion of the image interaction, gives rise to a number of rainbow maxima in the corresponding angular and spatial distribution. Our analysis shows that the presence of dielectric media surrounding the nanotube influences the positions and appearance of rainbows in the corresponding angular and spatial distributions. In addition, we analyze the possibility of production of nano-sized beams by carbon nanotubes.",
journal = "Journal of Physics: Conference Series",
title = "Channeling of protons through carbon nanotubes",
volume = "133",
doi = "10.1088/1742-6596/133/1/012015"
}

Borka, D., Mowbray, D. J., Mišković, Z. L., Petrović, S. M.,& Nešković, N. B.. (2008). Channeling of protons through carbon nanotubes. in Journal of Physics: Conference Series, 133.
https://doi.org/10.1088/1742-6596/133/1/012015

Borka D, Mowbray DJ, Mišković ZL, Petrović SM, Nešković NB. Channeling of protons through carbon nanotubes. in Journal of Physics: Conference Series. 2008;133.
doi:10.1088/1742-6596/133/1/012015 .

Borka, Duško, Mowbray, Duncan J., Mišković, Zoran L., Petrović, Srđan M., Nešković, Nebojša B., "Channeling of protons through carbon nanotubes" in Journal of Physics: Conference Series, 133 (2008),
https://doi.org/10.1088/1742-6596/133/1/012015 . .

TY  - CONF
AU  - Borka, Duško
AU  - Mowbray, Duncan J.
AU  - Mišković, Zoran L.
AU  - Petrović, Srđan M.
AU  - Nešković, Nebojša B.
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6818
AB  - We investigate how dynamic polarization of carbon valence electrons influences
both the angular and spatial distributions of protons channeled in a (11, 9) single-wall carbon
nanotube placed in vacuum and in different dielectric media. Proton speeds between 3 and 10
a.u., corresponding to energies of 0.223 and 2.49 MeV, are chosen with the nanotube length
varied between 0.1 and 1 µm. In all performed calculations we describe the interaction between
proton and carbon atoms on the nanotube wall using the Doyle-Turner potential. The image
force on a proton is calculated using a two-dimensional hydrodynamic model for the dynamic
response of the nanotube valence electrons and the dielectric media surrounding the nanotube.
The angular distributions of channeled protons are generated using a computer simulation
method which solves the proton equations of motion in the transverse plane numerically. The
best level of ordering and straightening of carbon nanotube arrays is often achieved when they
are grown in a dielectric matrix. Consequently, we investigate here how the dynamic polarization
of carbon valence electrons in the presence of various surrounding dielectric media affects the
angular distributions of protons channeled through (11, 9) single-wall carbon nanotubes. Our
analysis shows that the inclusion of the image interaction, gives rise to a number of rainbow
maxima in the corresponding angular and spatial distribution. Our analysis shows that the
presence of dielectric media surrounding the nanotube influences the positions and appearance
of rainbows in the corresponding angular and spatial distributions. In addition, we analyze the
possibility of production of nano-sized beams by carbon nanotubes.
C3  - Journal of Physics: Conference Series
T1  - Channeling of Protons Through Carbon Nanotubes
IS  - 84
SP  - 146
EP  - 146
DO  - 10.1088/1742-6596/133/1/012015
ER  - 

@conference{
author = "Borka, Duško and Mowbray, Duncan J. and Mišković, Zoran L. and Petrović, Srđan M. and Nešković, Nebojša B.",
year = "2008",
abstract = "We investigate how dynamic polarization of carbon valence electrons influences
both the angular and spatial distributions of protons channeled in a (11, 9) single-wall carbon
nanotube placed in vacuum and in different dielectric media. Proton speeds between 3 and 10
a.u., corresponding to energies of 0.223 and 2.49 MeV, are chosen with the nanotube length
varied between 0.1 and 1 µm. In all performed calculations we describe the interaction between
proton and carbon atoms on the nanotube wall using the Doyle-Turner potential. The image
force on a proton is calculated using a two-dimensional hydrodynamic model for the dynamic
response of the nanotube valence electrons and the dielectric media surrounding the nanotube.
The angular distributions of channeled protons are generated using a computer simulation
method which solves the proton equations of motion in the transverse plane numerically. The
best level of ordering and straightening of carbon nanotube arrays is often achieved when they
are grown in a dielectric matrix. Consequently, we investigate here how the dynamic polarization
of carbon valence electrons in the presence of various surrounding dielectric media affects the
angular distributions of protons channeled through (11, 9) single-wall carbon nanotubes. Our
analysis shows that the inclusion of the image interaction, gives rise to a number of rainbow
maxima in the corresponding angular and spatial distribution. Our analysis shows that the
presence of dielectric media surrounding the nanotube influences the positions and appearance
of rainbows in the corresponding angular and spatial distributions. In addition, we analyze the
possibility of production of nano-sized beams by carbon nanotubes.",
journal = "Journal of Physics: Conference Series",
title = "Channeling of Protons Through Carbon Nanotubes",
number = "84",
pages = "146-146",
doi = "10.1088/1742-6596/133/1/012015"
}

Borka, D., Mowbray, D. J., Mišković, Z. L., Petrović, S. M.,& Nešković, N. B.. (2008). Channeling of Protons Through Carbon Nanotubes. in Journal of Physics: Conference Series(84), 146-146.
https://doi.org/10.1088/1742-6596/133/1/012015

Borka D, Mowbray DJ, Mišković ZL, Petrović SM, Nešković NB. Channeling of Protons Through Carbon Nanotubes. in Journal of Physics: Conference Series. 2008;(84):146-146.
doi:10.1088/1742-6596/133/1/012015 .

Borka, Duško, Mowbray, Duncan J., Mišković, Zoran L., Petrović, Srđan M., Nešković, Nebojša B., "Channeling of Protons Through Carbon Nanotubes" in Journal of Physics: Conference Series, no. 84 (2008):146-146,
https://doi.org/10.1088/1742-6596/133/1/012015 . .

TY  - JOUR
AU  - Radović, Ivan
AU  - Hadžievski, Ljupčo
AU  - Mišković, Zoran L.
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3375
AB  - We describe the dynamic polarization of graphenes pi electrons by means of the Vlasov equations in the relaxation-time approximation and evaluate the stopping and the image forces on slow ions moving parallel to a supported graphene under the gating conditions. While the effects of temperature and the gate potential on these forces are conveniently included by means of a single scaling parameter, the effects of variation in size of the gap between graphene and the SiO2 substrate are found to be quite large, pointing to the need for including this gap explicitly in modeling of polarization of graphene.
T2  - Physical Review B: Condensed Matter and Materials Physics
T1  - Polarization of supported graphene by slowly moving charges
VL  - 77
IS  - 7
DO  - 10.1103/PhysRevB.77.075428
ER  - 

@article{
author = "Radović, Ivan and Hadžievski, Ljupčo and Mišković, Zoran L.",
year = "2008",
abstract = "We describe the dynamic polarization of graphenes pi electrons by means of the Vlasov equations in the relaxation-time approximation and evaluate the stopping and the image forces on slow ions moving parallel to a supported graphene under the gating conditions. While the effects of temperature and the gate potential on these forces are conveniently included by means of a single scaling parameter, the effects of variation in size of the gap between graphene and the SiO2 substrate are found to be quite large, pointing to the need for including this gap explicitly in modeling of polarization of graphene.",
journal = "Physical Review B: Condensed Matter and Materials Physics",
title = "Polarization of supported graphene by slowly moving charges",
volume = "77",
number = "7",
doi = "10.1103/PhysRevB.77.075428"
}

Radović, I., Hadžievski, L.,& Mišković, Z. L.. (2008). Polarization of supported graphene by slowly moving charges. in Physical Review B: Condensed Matter and Materials Physics, 77(7).
https://doi.org/10.1103/PhysRevB.77.075428

Radović I, Hadžievski L, Mišković ZL. Polarization of supported graphene by slowly moving charges. in Physical Review B: Condensed Matter and Materials Physics. 2008;77(7).
doi:10.1103/PhysRevB.77.075428 .

Radović, Ivan, Hadžievski, Ljupčo, Mišković, Zoran L., "Polarization of supported graphene by slowly moving charges" in Physical Review B: Condensed Matter and Materials Physics, 77, no. 7 (2008),
https://doi.org/10.1103/PhysRevB.77.075428 . .

TY  - CONF
AU  - Radović, Ivan
AU  - Hadžievski, Ljupčo
AU  - Bibić, Nataša M.
AU  - Mišković, Zoran L.
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6822
AB  - We study the interactions of fast ions with graphene, describing the high-frequency plasmon excitations of the electron gas by a two-dimensional, two-fluid hydrodynamic model. The Barkas effect on the stopping force and the analogous correction to the image force are evaluated within the second-order perturbation approach to the hydrodynamic equations.
C3  - Publications of the Astronomical Observatory of Belgrade
T1  - Non-Linear Effects in Interactions of Fast Ions with Graphene
IS  - 84
SP  - 177
EP  - 179
UR  - https://hdl.handle.net/21.15107/rcub_vinar_6822
ER  - 

@conference{
author = "Radović, Ivan and Hadžievski, Ljupčo and Bibić, Nataša M. and Mišković, Zoran L.",
year = "2008",
abstract = "We study the interactions of fast ions with graphene, describing the high-frequency plasmon excitations of the electron gas by a two-dimensional, two-fluid hydrodynamic model. The Barkas effect on the stopping force and the analogous correction to the image force are evaluated within the second-order perturbation approach to the hydrodynamic equations.",
journal = "Publications of the Astronomical Observatory of Belgrade",
title = "Non-Linear Effects in Interactions of Fast Ions with Graphene",
number = "84",
pages = "177-179",
url = "https://hdl.handle.net/21.15107/rcub_vinar_6822"
}

Radović, I., Hadžievski, L., Bibić, N. M.,& Mišković, Z. L.. (2008). Non-Linear Effects in Interactions of Fast Ions with Graphene. in Publications of the Astronomical Observatory of Belgrade(84), 177-179.
https://hdl.handle.net/21.15107/rcub_vinar_6822

Radović I, Hadžievski L, Bibić NM, Mišković ZL. Non-Linear Effects in Interactions of Fast Ions with Graphene. in Publications of the Astronomical Observatory of Belgrade. 2008;(84):177-179.
https://hdl.handle.net/21.15107/rcub_vinar_6822 .

Radović, Ivan, Hadžievski, Ljupčo, Bibić, Nataša M., Mišković, Zoran L., "Non-Linear Effects in Interactions of Fast Ions with Graphene" in Publications of the Astronomical Observatory of Belgrade, no. 84 (2008):177-179,
https://hdl.handle.net/21.15107/rcub_vinar_6822 .

TY  - JOUR
AU  - Borka, Duško
AU  - Mowbray, Duncan J.
AU  - Mišković, Zoran L.
AU  - Petrović, Srđan M.
AU  - Nešković, Nebojša B.
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3399
AB  - The best level of ordering and straightening of carbon nanotube arrays is often achieved when they are grown in a dielectric matrix, so such structures present the most suitable candidates for future channeling experiments with carbon nanotubes. Consequently, we investigate here how the dynamic polarization of carbon valence electrons in the presence of various surrounding dielectric media affects the angular distributions of protons channeled through (11,9) single-wall carbon nanotubes. Proton speeds between 3 and 10 a.u., corresponding to energies of 0.223 and 2.49 MeV, are chosen with the nanotubes length varied between 0.1 and 1 mu m. We describe the repulsive interaction between a proton and the nanotubes atoms in a continuum-potential approximation based on the Doyle-Turner potential, whereas the attractive image force on a proton is calculated using a two-dimensional hydrodynamic model for the dynamic response of the nanotube valence electrons, while assigning to the surrounding medium an appropriate (frequency dependent) dielectric function. The angular distributions of channeled protons are generated using a computer simulation method which solves the proton equations of motion in the transverse plane numerically. Our analysis shows that the presence of a dielectric medium can strongly affect both the appearance and positions of maxima in the angular distributions of channeled protons.
T2  - Physical Review A
T1  - Dynamic polarization effects on the angular distributions of protons channeled through carbon nanotubes in dielectric media
VL  - 77
IS  - 3
DO  - 10.1103/PhysRevA.77.032903
ER  - 

@article{
author = "Borka, Duško and Mowbray, Duncan J. and Mišković, Zoran L. and Petrović, Srđan M. and Nešković, Nebojša B.",
year = "2008",
abstract = "The best level of ordering and straightening of carbon nanotube arrays is often achieved when they are grown in a dielectric matrix, so such structures present the most suitable candidates for future channeling experiments with carbon nanotubes. Consequently, we investigate here how the dynamic polarization of carbon valence electrons in the presence of various surrounding dielectric media affects the angular distributions of protons channeled through (11,9) single-wall carbon nanotubes. Proton speeds between 3 and 10 a.u., corresponding to energies of 0.223 and 2.49 MeV, are chosen with the nanotubes length varied between 0.1 and 1 mu m. We describe the repulsive interaction between a proton and the nanotubes atoms in a continuum-potential approximation based on the Doyle-Turner potential, whereas the attractive image force on a proton is calculated using a two-dimensional hydrodynamic model for the dynamic response of the nanotube valence electrons, while assigning to the surrounding medium an appropriate (frequency dependent) dielectric function. The angular distributions of channeled protons are generated using a computer simulation method which solves the proton equations of motion in the transverse plane numerically. Our analysis shows that the presence of a dielectric medium can strongly affect both the appearance and positions of maxima in the angular distributions of channeled protons.",
journal = "Physical Review A",
title = "Dynamic polarization effects on the angular distributions of protons channeled through carbon nanotubes in dielectric media",
volume = "77",
number = "3",
doi = "10.1103/PhysRevA.77.032903"
}

Borka, D., Mowbray, D. J., Mišković, Z. L., Petrović, S. M.,& Nešković, N. B.. (2008). Dynamic polarization effects on the angular distributions of protons channeled through carbon nanotubes in dielectric media. in Physical Review A, 77(3).
https://doi.org/10.1103/PhysRevA.77.032903

Borka D, Mowbray DJ, Mišković ZL, Petrović SM, Nešković NB. Dynamic polarization effects on the angular distributions of protons channeled through carbon nanotubes in dielectric media. in Physical Review A. 2008;77(3).
doi:10.1103/PhysRevA.77.032903 .

Borka, Duško, Mowbray, Duncan J., Mišković, Zoran L., Petrović, Srđan M., Nešković, Nebojša B., "Dynamic polarization effects on the angular distributions of protons channeled through carbon nanotubes in dielectric media" in Physical Review A, 77, no. 3 (2008),
https://doi.org/10.1103/PhysRevA.77.032903 . .

TY  - JOUR
AU  - Borka, Duško
AU  - Petrović, Srđan M.
AU  - Nešković, Nebojša B.
AU  - Mowbray, Duncan J.
AU  - Mišković, Zoran L.
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6650
AB  - We investigate the influence of the effect of dynamic polarization of the carbon atom valence electrons on the angular distributions of protons channeled in (6, 4)"(11, 9) double-wall carbon nanotubes. The proton velocities are 3 and 5 a.u., corresponding to energies of 0.223 and 0.621 MeV, while the nanotube lengths are 0.1-0.2 mu m. The interaction between a proton and the nanotube atoms is described by the Doyle-Turner potential whereas the image force acting on the proton is calculated by a two-dimensional hydrodynamic model of the dynamic response of the nanotube valence electrons. The angular distributions of channeled protons are generated by a computer simulation method using the numerical solution of the proton equations of motion in the transverse plane. Our analysis shows that the image force induces additional extrema in the proton deflection functions, giving rise to the rainbow maxima in the angular distributions that do not exist when the proton is subject to the atomic force only. These maxima could be used to probe the total interaction potential in proton channeling in nanotubes.
T2  - Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
T1  - Influence of the dynamic polarization effect on the angular distributions of protons channeled in double-wall carbon nanotubes
VL  - 256
IS  - 1
SP  - 131
EP  - 136
DO  - 10.1016/j.nimb.2006.11.102
ER  - 

@article{
author = "Borka, Duško and Petrović, Srđan M. and Nešković, Nebojša B. and Mowbray, Duncan J. and Mišković, Zoran L.",
year = "2007",
abstract = "We investigate the influence of the effect of dynamic polarization of the carbon atom valence electrons on the angular distributions of protons channeled in (6, 4)"(11, 9) double-wall carbon nanotubes. The proton velocities are 3 and 5 a.u., corresponding to energies of 0.223 and 0.621 MeV, while the nanotube lengths are 0.1-0.2 mu m. The interaction between a proton and the nanotube atoms is described by the Doyle-Turner potential whereas the image force acting on the proton is calculated by a two-dimensional hydrodynamic model of the dynamic response of the nanotube valence electrons. The angular distributions of channeled protons are generated by a computer simulation method using the numerical solution of the proton equations of motion in the transverse plane. Our analysis shows that the image force induces additional extrema in the proton deflection functions, giving rise to the rainbow maxima in the angular distributions that do not exist when the proton is subject to the atomic force only. These maxima could be used to probe the total interaction potential in proton channeling in nanotubes.",
journal = "Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms",
title = "Influence of the dynamic polarization effect on the angular distributions of protons channeled in double-wall carbon nanotubes",
volume = "256",
number = "1",
pages = "131-136",
doi = "10.1016/j.nimb.2006.11.102"
}

Borka, D., Petrović, S. M., Nešković, N. B., Mowbray, D. J.,& Mišković, Z. L.. (2007). Influence of the dynamic polarization effect on the angular distributions of protons channeled in double-wall carbon nanotubes. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 256(1), 131-136.
https://doi.org/10.1016/j.nimb.2006.11.102

Borka D, Petrović SM, Nešković NB, Mowbray DJ, Mišković ZL. Influence of the dynamic polarization effect on the angular distributions of protons channeled in double-wall carbon nanotubes. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms. 2007;256(1):131-136.
doi:10.1016/j.nimb.2006.11.102 .

Borka, Duško, Petrović, Srđan M., Nešković, Nebojša B., Mowbray, Duncan J., Mišković, Zoran L., "Influence of the dynamic polarization effect on the angular distributions of protons channeled in double-wall carbon nanotubes" in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 256, no. 1 (2007):131-136,
https://doi.org/10.1016/j.nimb.2006.11.102 . .

TY  - JOUR
AU  - Radović, Ivan
AU  - Hadžievski, Ljupčo
AU  - Bibić, Nataša M.
AU  - Mišković, Zoran L.
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3311
AB  - We use a two-dimensional, two-fluid hydrodynamic model to describe the high-frequency plasmon excitations of the carbon valence electrons responding to fast ions and electric dipoles, which move parallel to a single sheet of graphene supported by an insulating substrate. We calculate the stopping and the image forces on ions and dipoles, as well as the dynamic torque on dipoles about their center of mass, resulting from the dynamic polarization of graphene. While the results for ions are similar to those obtained earlier for ion channeling through carbon nanotubes in dielectric media, the stopping and the image forces on dipoles show strong directional dependencies. The torque on point dipoles implies a strong alignment effect in the direction of motion at lower speeds, as well as a tendency of the dipole to roll over the graphene at high speeds.
T2  - Physical Review A
T1  - Dynamic-polarization forces on fast ions and molecules moving over supported graphene
VL  - 76
IS  - 4
SP  - 042901
DO  - 10.1103/PhysRevA.76.042901
ER  - 

@article{
author = "Radović, Ivan and Hadžievski, Ljupčo and Bibić, Nataša M. and Mišković, Zoran L.",
year = "2007",
abstract = "We use a two-dimensional, two-fluid hydrodynamic model to describe the high-frequency plasmon excitations of the carbon valence electrons responding to fast ions and electric dipoles, which move parallel to a single sheet of graphene supported by an insulating substrate. We calculate the stopping and the image forces on ions and dipoles, as well as the dynamic torque on dipoles about their center of mass, resulting from the dynamic polarization of graphene. While the results for ions are similar to those obtained earlier for ion channeling through carbon nanotubes in dielectric media, the stopping and the image forces on dipoles show strong directional dependencies. The torque on point dipoles implies a strong alignment effect in the direction of motion at lower speeds, as well as a tendency of the dipole to roll over the graphene at high speeds.",
journal = "Physical Review A",
title = "Dynamic-polarization forces on fast ions and molecules moving over supported graphene",
volume = "76",
number = "4",
pages = "042901",
doi = "10.1103/PhysRevA.76.042901"
}

Radović, I., Hadžievski, L., Bibić, N. M.,& Mišković, Z. L.. (2007). Dynamic-polarization forces on fast ions and molecules moving over supported graphene. in Physical Review A, 76(4), 042901.
https://doi.org/10.1103/PhysRevA.76.042901

Radović I, Hadžievski L, Bibić NM, Mišković ZL. Dynamic-polarization forces on fast ions and molecules moving over supported graphene. in Physical Review A. 2007;76(4):042901.
doi:10.1103/PhysRevA.76.042901 .

Radović, Ivan, Hadžievski, Ljupčo, Bibić, Nataša M., Mišković, Zoran L., "Dynamic-polarization forces on fast ions and molecules moving over supported graphene" in Physical Review A, 76, no. 4 (2007):042901,
https://doi.org/10.1103/PhysRevA.76.042901 . .