Ilya Valuev

Joint Institute for High Temperatures

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ИВ

И. В. Морозов

Joint Institute for High Temperatures

Alexei Deinega

Northwestern University

W. Ebeling

Humboldt-Universität zu Berlin

Sergei Belousov

Kintech Lab (Russia)

Ya S Lavrinenko

Joint Institute for High Temperatures

БВ

Б. В. Потапкин

Kurchatov Institute

МВ

М. В. Богданова

Kintech Lab (Russia)

GÉ

G. É. Norman

Moscow Institute of Physics and Technology

Igor M. Sokolov

Humboldt-Universität zu Berlin

Yu. E. Lozovik

Institute of Spectroscopy

Cooperative Institutions

Russian Academy of Sciences

Kintech Lab (Russia)

Moscow Institute of Physics and Technology

Moscow Engineering Physics Institute

Joint Institute for High Temperatures

Kurchatov Institute

Moscow Power Engineering Institute

Lomonosov Moscow State University

National Research University Higher School of Economics

Humboldt-Universität zu Berlin

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FDTD subcell graphene model beyond the thin-film approximation

Applied Physics A (2016)

Ilya Valuev Sergei Belousov М. В. Богданова Oleg V. Kotov Yu. E. Lozovik

STRIPS

10.1007/s00339-016-0635-1

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Citations (6)

Reactive potentials for molecular dynamics with cluster multi-range interpolation

Computer Physics Communications (2005)

Ilya Valuev

Interpolation

10.1016/j.cpc.2005.03.016

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Citations (1)

Transfer-matrix approach for finite-difference time-domain simulation of periodic structures

Physical Review E (2013)

Alexei Deinega Sergei Belousov Ilya Valuev

Optical properties of periodic structures can be calculated using the transfer-matrix approach, which establishes a relation between amplitudes of the wave incident on a structure with transmitted or reflected waves. The transfer matrix can be used to obtain transmittance and reflectance spectra of finite periodic structures as well as eigenmodes of infinite structures. Traditionally, calculation of the transfer matrix is performed in the frequency domain and involves linear algebra. In this work, we present a technique for calculation of the transfer matrix using the finite-difference time-domain (FDTD) method and show the way of its implementation in FDTD code. To illustrate the performance of our technique we calculate the transmittance spectra for opal photonic crystal slabs consisting of multiple layers of spherical scatterers. Our technique can be used for photonic band structure calculations. It can also be combined with existing FDTD methods for the analysis of periodic structures at an oblique incidence, as well as for modeling point sources in a periodic environment.

Transfer-matrix method (optics)

Transfer matrix

Matrix (chemical analysis)

Matrix method

Band matrix

Transformation matrix

10.1103/physreve.88.053305

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Citations (13)

Implementation of the iterative finite-difference time-domain technique for simulation of periodic structures at oblique incidence

Computer Physics Communications (2014)

Ilya Valuev Alexei Deinega Sergei Belousov

Code (set theory)

10.1016/j.cpc.2014.01.001

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Citations (6)

Minimizing light reflection from dielectric textured surfaces

Journal of the Optical Society of America A (2011)

Alexei Deinega Ilya Valuev Б. В. Потапкин Yu. E. Lozovik

In this paper, we consider antireflective properties of textured surfaces for all texture size-to-wavelength ratios. Existence and location of the global reflection minimum with respect to geometrical parameters of the texture is a subject of our study. We also investigate asymptotic behavior of the reflection with the change of the texture geometry for the long and short wavelength limits. As a particular example, we consider silicon-textured surfaces used in solar cells technology. Most of our results are obtained with the help of the finite-difference time-domain (FDTD) method. We also use effective medium theory and geometric optics approximation for the limiting cases. The FDTD results for these limits are in agreement with the corresponding approximations.

Reflection

Texture (cosmology)

Anti-reflective coating

Limiting

Geometrical optics

10.1364/josaa.28.000770

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Citations (154)

Simulation of hydrogen plasma with cluster multi-range interpolation

Journal of Physics A Mathematical and General (2006)

Ilya Valuev

In the present work, we use the recently developed cluster multi-range interpolation (CMRI) (Valuev 2005 Comput. Phys. Commun. 169 60) of interaction potentials to simulate hydrogen plasma using molecular dynamics (MD). The interpolation is based on variational mixing of cluster connectivity within a given system of electrons and ions described by coordinates of the particles. The use of potential interpolation based on connectivity allows us to treat the collisions of small numbers of particles (up to two ions and three electrons together) by more accurate empirical models and treat such processes as ionization or molecule formation by means of MD simulation on single-valued smooth approximate N-particle potential energy surfaces. The construction of the scheme and the results of equilibrium MD simulations are discussed. Energy spectra and particle pair correlation functions are compared between the current CMRI model and two classical models with pair pseudopotentials.

Interpolation

10.1088/0305-4470/39/17/s23

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Citations (3)

Confining boundary conditions for simulation of electron-ion plasma by antisymmetrized wave packet molecular dynamics

Сборник тезисов конференции «Complex Systems of Charged Particles and their Interactions with Electromagnetic Radiation» (2015)

Ilya Valuev И. В. Морозов

Dynamics

Source

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Reflecting Boundary Conditions for Classical and Quantum Molecular Dynamics Simulations of Nonideal Plasmas

Contributions to Plasma Physics (2016)

Ya S Lavrinenko И. В. Морозов Ilya Valuev

Abstract The influence of boundary conditions for the classical and wave packet molecular dynamics (MD) simulations of nonideal electron‐ion plasma is studied. We start with the classical MD and perform a comprehensive study of convergence of the per‐particle potential energy and pressure with the number of particles using both the nearest image method (periodic boundaries) and harmonic reflective boundaries. As a result an error caused by finiteness of the simulation box is estimated. Moreover electron oscillations given by the spectra of the current autocorrelation function are analyzed for both types of the boundary conditions. A special attention is paid to the reflecting boundaries since they prevent wave packet spreading in the Wave Packet MD. To speed up classical MD simulations we use the GPU‐accelerated code

Periodic boundary conditions

10.1002/ctpp.201500139

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Citations (10)

Wave packet spreading and localization in electron-nuclear scattering

Bulletin of the American Physical Society (2013)

Andreas Markmann Paul Grabowski И. В. Морозов Ilya Valuev C. Fichtl

Source

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Using memory-efficient algorithm for large-scale time-domain modeling of surface plasmon polaritons propagation in organic light emitting diodes

Journal of Physics Conference Series (2017)

Andrey Zakirov Sergei Belousov Ilya Valuev Vadim Levchenko Anastasia Perepelkina

We demonstrate an efficient approach to numerical modeling of optical properties of large-scale structures with typical dimensions much greater than the wavelength of light. For this purpose, we use the finite-difference time-domain (FDTD) method enhanced with a memory efficient Locally Recursive non-Locally Asynchronous (LRnLA) algorithm called DiamondTorre and implemented for General Purpose Graphical Processing Units (GPGPU) architecture. We apply our approach to simulation of optical properties of organic light emitting diodes (OLEDs), which is an essential step in the process of designing OLEDs with improved efficiency. Specifically, we consider a problem of excitation and propagation of surface plasmon polaritons (SPPs) in a typical OLED, which is a challenging task given that SPP decay length can be about two orders of magnitude greater than the wavelength of excitation. We show that with our approach it is possible to extend the simulated volume size sufficiently so that SPP decay dynamics is accounted for. We further consider an OLED with periodically corrugated metallic cathode and show how the SPP decay length can be greatly reduced due to scattering off the corrugation. Ultimately, we compare the performance of our algorithm to the conventional FDTD and demonstrate that our approach can efficiently be used for large-scale FDTD simulations with the use of only a single GPGPU-powered workstation, which is not practically feasible with the conventional FDTD.

10.1088/1742-6596/905/1/012030

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Citations (8)