TY  - JOUR
AU  - Tadić, Bosiljka
AU  - Anđelković, Miroslav
AU  - Melnik, Roderick
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8451
AB  - Mapping the brain imaging data to networks, where nodes represent anatomical brain regions and edges indicate the occurrence of fiber tracts between them, has enabled an objective graph-theoretic analysis of human connectomes. However, the latent structure on higher-order interactions remains unexplored, where many brain regions act in synergy to perform complex functions. Here we use the simplicial complexes description of human connectome, where the shared simplexes encode higher-order relationships between groups of nodes. We study consensus connectome of 100 female (F-connectome) and of 100 male (M-connectome) subjects that we generated from the Budapest Reference Connectome Server v3.0 based on data from the Human Connectome Project. Our analysis reveals that the functional geometry of the common F&M-connectome coincides with the M-connectome and is characterized by a complex architecture of simplexes to the 14th order, which is built in six anatomical communities, and linked by short cycles. The F-connectome has additional edges that involve different brain regions, thereby increasing the size of simplexes and introducing new cycles. Both connectomes contain characteristic subjacent graphs that make them 3/2-hyperbolic. These results shed new light on the functional architecture of the brain, suggesting that insightful differences among connectomes are hidden in their higher-order connectivity. © 2019, The Author(s).
T2  - Scientific Reports
T1  - Functional Geometry of Human Connectomes
VL  - 9
IS  - 1
SP  - 12060
DO  - 10.1038/s41598-019-48568-5
ER  - 

@article{
author = "Tadić, Bosiljka and Anđelković, Miroslav and Melnik, Roderick",
year = "2019",
abstract = "Mapping the brain imaging data to networks, where nodes represent anatomical brain regions and edges indicate the occurrence of fiber tracts between them, has enabled an objective graph-theoretic analysis of human connectomes. However, the latent structure on higher-order interactions remains unexplored, where many brain regions act in synergy to perform complex functions. Here we use the simplicial complexes description of human connectome, where the shared simplexes encode higher-order relationships between groups of nodes. We study consensus connectome of 100 female (F-connectome) and of 100 male (M-connectome) subjects that we generated from the Budapest Reference Connectome Server v3.0 based on data from the Human Connectome Project. Our analysis reveals that the functional geometry of the common F&M-connectome coincides with the M-connectome and is characterized by a complex architecture of simplexes to the 14th order, which is built in six anatomical communities, and linked by short cycles. The F-connectome has additional edges that involve different brain regions, thereby increasing the size of simplexes and introducing new cycles. Both connectomes contain characteristic subjacent graphs that make them 3/2-hyperbolic. These results shed new light on the functional architecture of the brain, suggesting that insightful differences among connectomes are hidden in their higher-order connectivity. © 2019, The Author(s).",
journal = "Scientific Reports",
title = "Functional Geometry of Human Connectomes",
volume = "9",
number = "1",
pages = "12060",
doi = "10.1038/s41598-019-48568-5"
}

Tadić, B., Anđelković, M.,& Melnik, R.. (2019). Functional Geometry of Human Connectomes. in Scientific Reports, 9(1), 12060.
https://doi.org/10.1038/s41598-019-48568-5

Tadić B, Anđelković M, Melnik R. Functional Geometry of Human Connectomes. in Scientific Reports. 2019;9(1):12060.
doi:10.1038/s41598-019-48568-5 .

Tadić, Bosiljka, Anđelković, Miroslav, Melnik, Roderick, "Functional Geometry of Human Connectomes" in Scientific Reports, 9, no. 1 (2019):12060,
https://doi.org/10.1038/s41598-019-48568-5 . .

TY  - JOUR
AU  - Tuszynski, Jack A.
AU  - Satarić, Miljko V.
AU  - Sekulić, Dalibor L.
AU  - Satarić, Bogdan M.
AU  - Zdravković, Slobodan
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8397
AB  - Calcium ions (Ca2+) tune and control numerous diverse aspects of cochlear and vestibular physiological processes. This paper is focused on the Ca2+ control of mechanotransduction in sensory hair cells in the context of polyelectrolyte properties of actin filaments within the hair–bundles of inner ear. These actin filaments appear to serve as efficient pathways for the flow of Ca2+ ions inside stereocilia. We showed how this can be utilized for tuning of force–generating myosin motors. In an established model, we unified the Ca2+ nonlinear dynamics involved in the control of myosin adaptation motors with mechanical displacements of hair–bundles. The model shows that the characteristic time scales fit reasonably well with the available experimental data for spontaneous oscillations in the inner ear. This scenario promises to fill a gap in our understanding of the role of Ca2+ ions in the regulation of processes in the auditory cells of the inner ear. © 2018 Elsevier B.V.
T2  - Biosystems
T1  - Nonlinear calcium ion waves along actin filaments control active hair–bundle motility
VL  - 173
SP  - 181
EP  - 190
DO  - 10.1016/j.biosystems.2018.08.006
ER  - 

@article{
author = "Tuszynski, Jack A. and Satarić, Miljko V. and Sekulić, Dalibor L. and Satarić, Bogdan M. and Zdravković, Slobodan",
year = "2018",
abstract = "Calcium ions (Ca2+) tune and control numerous diverse aspects of cochlear and vestibular physiological processes. This paper is focused on the Ca2+ control of mechanotransduction in sensory hair cells in the context of polyelectrolyte properties of actin filaments within the hair–bundles of inner ear. These actin filaments appear to serve as efficient pathways for the flow of Ca2+ ions inside stereocilia. We showed how this can be utilized for tuning of force–generating myosin motors. In an established model, we unified the Ca2+ nonlinear dynamics involved in the control of myosin adaptation motors with mechanical displacements of hair–bundles. The model shows that the characteristic time scales fit reasonably well with the available experimental data for spontaneous oscillations in the inner ear. This scenario promises to fill a gap in our understanding of the role of Ca2+ ions in the regulation of processes in the auditory cells of the inner ear. © 2018 Elsevier B.V.",
journal = "Biosystems",
title = "Nonlinear calcium ion waves along actin filaments control active hair–bundle motility",
volume = "173",
pages = "181-190",
doi = "10.1016/j.biosystems.2018.08.006"
}

Tuszynski, J. A., Satarić, M. V., Sekulić, D. L., Satarić, B. M.,& Zdravković, S.. (2018). Nonlinear calcium ion waves along actin filaments control active hair–bundle motility. in Biosystems, 173, 181-190.
https://doi.org/10.1016/j.biosystems.2018.08.006

Tuszynski JA, Satarić MV, Sekulić DL, Satarić BM, Zdravković S. Nonlinear calcium ion waves along actin filaments control active hair–bundle motility. in Biosystems. 2018;173:181-190.
doi:10.1016/j.biosystems.2018.08.006 .

Tuszynski, Jack A., Satarić, Miljko V., Sekulić, Dalibor L., Satarić, Bogdan M., Zdravković, Slobodan, "Nonlinear calcium ion waves along actin filaments control active hair–bundle motility" in Biosystems, 173 (2018):181-190,
https://doi.org/10.1016/j.biosystems.2018.08.006 . .

TY  - JOUR
AU  - Karbunar, Lazar
AU  - Borka, Duško
AU  - Radović, Ivan
AU  - Mišković, Zoran L.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1066
AB  - We investigate the interactions of charged particles with straight and bent single-walled carbon nanotubes (SWNTs) under channeling conditions in the presence of dynamic polarization of the valence electrons in carbon. This polarization is described by a cylindrical, two-fluid hydrodynamic model with the parameters taken from the recent modelling of several independent experiments on electron energy loss spectroscopy of carbon nano-structures. We use the hydrodynamic model to calculate the image potential for protons moving through four types of SWNTs at a speed of 3 atomic units. The image potential is then combined with the Doyle-Turner atomic potential to obtain the total potential in the bent carbon nanotubes. Using that potential, we also compute the spatial and angular distributions of protons channeled through the bent carbon nanotubes, and compare the results with the distributions obtained without taking into account the image potential.
T2  - Chinese Physics B
T1  - Channeling of fast ions through the bent carbon nanotubes: The extended two-fluid hydrodynamic model
VL  - 25
IS  - 4
DO  - 10.1088/1674-1056/25/4/046106
ER  - 

@article{
author = "Karbunar, Lazar and Borka, Duško and Radović, Ivan and Mišković, Zoran L.",
year = "2016",
abstract = "We investigate the interactions of charged particles with straight and bent single-walled carbon nanotubes (SWNTs) under channeling conditions in the presence of dynamic polarization of the valence electrons in carbon. This polarization is described by a cylindrical, two-fluid hydrodynamic model with the parameters taken from the recent modelling of several independent experiments on electron energy loss spectroscopy of carbon nano-structures. We use the hydrodynamic model to calculate the image potential for protons moving through four types of SWNTs at a speed of 3 atomic units. The image potential is then combined with the Doyle-Turner atomic potential to obtain the total potential in the bent carbon nanotubes. Using that potential, we also compute the spatial and angular distributions of protons channeled through the bent carbon nanotubes, and compare the results with the distributions obtained without taking into account the image potential.",
journal = "Chinese Physics B",
title = "Channeling of fast ions through the bent carbon nanotubes: The extended two-fluid hydrodynamic model",
volume = "25",
number = "4",
doi = "10.1088/1674-1056/25/4/046106"
}

Karbunar, L., Borka, D., Radović, I.,& Mišković, Z. L.. (2016). Channeling of fast ions through the bent carbon nanotubes: The extended two-fluid hydrodynamic model. in Chinese Physics B, 25(4).
https://doi.org/10.1088/1674-1056/25/4/046106

Karbunar L, Borka D, Radović I, Mišković ZL. Channeling of fast ions through the bent carbon nanotubes: The extended two-fluid hydrodynamic model. in Chinese Physics B. 2016;25(4).
doi:10.1088/1674-1056/25/4/046106 .

Karbunar, Lazar, Borka, Duško, Radović, Ivan, Mišković, Zoran L., "Channeling of fast ions through the bent carbon nanotubes: The extended two-fluid hydrodynamic model" in Chinese Physics B, 25, no. 4 (2016),
https://doi.org/10.1088/1674-1056/25/4/046106 . .

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, Duško
AU  - Mišković, Zoran L.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6090
AB  - We present a simple model for the resonant feature designated as the pi plasmon in single-layer graphene supported by a metal substrate, which is excited via high-resolution electron energy loss spectroscopy (HREELS) in the off-specular scattering geometry. Using a two-dimensional, two-fluid hydrodynamic model for interband transitions of graphenes pi and sigma electrons and an empirical Drude-Lorentz model for the metal in the local approximation enables us to reproduce, at the qualitative and semi-quantitative levels, the typical experimental features of the HREEL spectra in the visible to the ultraviolet frequency range. (C) 2014 Elsevier B.V. All rights reserved.
T2  - Physics Letters A
T1  - Theoretical modeling of experimental HREEL spectra for supported graphene
VL  - 378
IS  - 30-31
SP  - 2206
EP  - 2210
DO  - 10.1016/j.physleta.2014.06.001
ER  - 

@article{
author = "Radović, Ivan and Borka, Duško and Mišković, Zoran L.",
year = "2014",
abstract = "We present a simple model for the resonant feature designated as the pi plasmon in single-layer graphene supported by a metal substrate, which is excited via high-resolution electron energy loss spectroscopy (HREELS) in the off-specular scattering geometry. Using a two-dimensional, two-fluid hydrodynamic model for interband transitions of graphenes pi and sigma electrons and an empirical Drude-Lorentz model for the metal in the local approximation enables us to reproduce, at the qualitative and semi-quantitative levels, the typical experimental features of the HREEL spectra in the visible to the ultraviolet frequency range. (C) 2014 Elsevier B.V. All rights reserved.",
journal = "Physics Letters A",
title = "Theoretical modeling of experimental HREEL spectra for supported graphene",
volume = "378",
number = "30-31",
pages = "2206-2210",
doi = "10.1016/j.physleta.2014.06.001"
}

Radović, I., Borka, D.,& Mišković, Z. L.. (2014). Theoretical modeling of experimental HREEL spectra for supported graphene. in Physics Letters A, 378(30-31), 2206-2210.
https://doi.org/10.1016/j.physleta.2014.06.001

Radović I, Borka D, Mišković ZL. Theoretical modeling of experimental HREEL spectra for supported graphene. in Physics Letters A. 2014;378(30-31):2206-2210.
doi:10.1016/j.physleta.2014.06.001 .

Radović, Ivan, Borka, Duško, Mišković, Zoran L., "Theoretical modeling of experimental HREEL spectra for supported graphene" in Physics Letters A, 378, no. 30-31 (2014):2206-2210,
https://doi.org/10.1016/j.physleta.2014.06.001 . .

TY  - JOUR
AU  - Radović, Ivan
AU  - Borka, Duško
AU  - Mišković, Zoran L.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5707
AB  - We study the wake effect in the charge carrier density in free graphene induced by an electric dipole 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 show that, while the equilibrium doping density of graphene sets a length scale for the period of the wake via graphenes Fermi wavenumber, qualitative properties of the wake are strongly affected by the speed of the dipole, its distance from graphene, and the dipole moment orientation. (C) 2013 Elsevier B.V. All rights reserved.
T2  - Physics Letters A
T1  - Wake effect in interactions of dipolar molecules with doped graphene
VL  - 377
IS  - 38
SP  - 2614
EP  - 2620
DO  - 10.1016/j.physleta.2013.07.038
ER  - 

@article{
author = "Radović, Ivan and Borka, Duško and Mišković, Zoran L.",
year = "2013",
abstract = "We study the wake effect in the charge carrier density in free graphene induced by an electric dipole 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 show that, while the equilibrium doping density of graphene sets a length scale for the period of the wake via graphenes Fermi wavenumber, qualitative properties of the wake are strongly affected by the speed of the dipole, its distance from graphene, and the dipole moment orientation. (C) 2013 Elsevier B.V. All rights reserved.",
journal = "Physics Letters A",
title = "Wake effect in interactions of dipolar molecules with doped graphene",
volume = "377",
number = "38",
pages = "2614-2620",
doi = "10.1016/j.physleta.2013.07.038"
}

Radović, I., Borka, D.,& Mišković, Z. L.. (2013). Wake effect in interactions of dipolar molecules with doped graphene. in Physics Letters A, 377(38), 2614-2620.
https://doi.org/10.1016/j.physleta.2013.07.038

Radović I, Borka D, Mišković ZL. Wake effect in interactions of dipolar molecules with doped graphene. in Physics Letters A. 2013;377(38):2614-2620.
doi:10.1016/j.physleta.2013.07.038 .

Radović, Ivan, Borka, Duško, Mišković, Zoran L., "Wake effect in interactions of dipolar molecules with doped graphene" in Physics Letters A, 377, no. 38 (2013):2614-2620,
https://doi.org/10.1016/j.physleta.2013.07.038 . .

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  - JOUR
AU  - Radović, Ivan
AU  - Borka, Duško
AU  - Mišković, Zoran L.
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4527
AB  - We use the dielectric-response formalism to evaluate the induced density of charge carriers in supported graphene due to an external moving charged particle in terms of its velocity and distance from graphene for several equilibrium charge carrier densities due to graphene doping. We show that, when the particle speed exceeds a threshold value, an oscillatory wake effect develops in the induced charge density trailing the particle. Strong effects are observed in the wake pattern due to finite size of the graphene-substrate gap, as well as due to strong coupling effects, and plasmon damping of graphenes pi electrons. (C) 2011 Elsevier B.V. All rights reserved.
T2  - Physics Letters A
T1  - Wake effect in doped graphene due to moving external charge
VL  - 375
IS  - 42
SP  - 3720
EP  - 3725
DO  - 10.1016/j.physleta.2011.08.053
ER  - 

@article{
author = "Radović, Ivan and Borka, Duško and Mišković, Zoran L.",
year = "2011",
abstract = "We use the dielectric-response formalism to evaluate the induced density of charge carriers in supported graphene due to an external moving charged particle in terms of its velocity and distance from graphene for several equilibrium charge carrier densities due to graphene doping. We show that, when the particle speed exceeds a threshold value, an oscillatory wake effect develops in the induced charge density trailing the particle. Strong effects are observed in the wake pattern due to finite size of the graphene-substrate gap, as well as due to strong coupling effects, and plasmon damping of graphenes pi electrons. (C) 2011 Elsevier B.V. All rights reserved.",
journal = "Physics Letters A",
title = "Wake effect in doped graphene due to moving external charge",
volume = "375",
number = "42",
pages = "3720-3725",
doi = "10.1016/j.physleta.2011.08.053"
}

Radović, I., Borka, D.,& Mišković, Z. L.. (2011). Wake effect in doped graphene due to moving external charge. in Physics Letters A, 375(42), 3720-3725.
https://doi.org/10.1016/j.physleta.2011.08.053

Radović I, Borka D, Mišković ZL. Wake effect in doped graphene due to moving external charge. in Physics Letters A. 2011;375(42):3720-3725.
doi:10.1016/j.physleta.2011.08.053 .

Radović, Ivan, Borka, Duško, Mišković, Zoran L., "Wake effect in doped graphene due to moving external charge" in Physics Letters A, 375, no. 42 (2011):3720-3725,
https://doi.org/10.1016/j.physleta.2011.08.053 . .

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  - 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 . .