Research output: Contribution to journal › Conference article › peer-review
Simulating optical properties of extremely oblate inhomogeneous particles with the discrete dipole approximation. / Smunev, D. A.; Yurkin, M. A.
In: Journal of Physics: Conference Series, Vol. 1461, No. 1, 012198, 23.04.2020.Research output: Contribution to journal › Conference article › peer-review
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TY - JOUR
T1 - Simulating optical properties of extremely oblate inhomogeneous particles with the discrete dipole approximation
AU - Smunev, D. A.
AU - Yurkin, M. A.
PY - 2020/4/23
Y1 - 2020/4/23
N2 - The discrete dipole approximation (DDA) is a general volume-discretization method for simulating optical properties of arbitrary particles. We employ the formulation of the DDA with rectangular-cuboid dipoles (voxels) and analyze it in the limit of very small thicknesses of both dipole and scatterer. Taking the limit of zero thickness greatly simplifies the theoretical formulation, resulting in the Rayleigh-Debye-Gans approximation combined with the boundary conditions at the plane interface. This can also be computed in the framework of the DDA, for which we developed a specialized modification of the open-source code ADDA. We also proved that the scattering quantities computed with the standard (3D) code are independent of number of dipoles along the particle thickness, when the latter is sufficiently small. This justifies the usage of dipole monolayers for practical simulations, including those for finite-width metasurfaces.
AB - The discrete dipole approximation (DDA) is a general volume-discretization method for simulating optical properties of arbitrary particles. We employ the formulation of the DDA with rectangular-cuboid dipoles (voxels) and analyze it in the limit of very small thicknesses of both dipole and scatterer. Taking the limit of zero thickness greatly simplifies the theoretical formulation, resulting in the Rayleigh-Debye-Gans approximation combined with the boundary conditions at the plane interface. This can also be computed in the framework of the DDA, for which we developed a specialized modification of the open-source code ADDA. We also proved that the scattering quantities computed with the standard (3D) code are independent of number of dipoles along the particle thickness, when the latter is sufficiently small. This justifies the usage of dipole monolayers for practical simulations, including those for finite-width metasurfaces.
UR - http://www.scopus.com/inward/record.url?scp=85084130518&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/1461/1/012198
DO - 10.1088/1742-6596/1461/1/012198
M3 - Conference article
AN - SCOPUS:85084130518
VL - 1461
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 1
M1 - 012198
T2 - 4th International Conference on Metamaterials and Nanophotonics, METANANO 2019
Y2 - 15 July 2019 through 19 July 2019
ER -
ID: 24224828