10.1021/acs.jpcc.5b09271.s002
Maxim A. Yurkin
Maxim A.
Yurkin
Marcus Huntemann
Marcus
Huntemann
Rigorous and Fast Discrete Dipole Approximation for
Particles near a Plane Interface
American Chemical Society
2015
acceleration scheme
Plane InterfaceThe
method
glass substrate
modification
silver sphere
Fast Discrete Dipole Approximation
DDA
ADDA
test simulations
2015-12-31 00:00:00
Media
https://acs.figshare.com/articles/media/Rigorous_and_Fast_Discrete_Dipole_Approximation_for_Particles_near_a_Plane_Interface/2093422
The discrete dipole approximation
(DDA) is a widely used method
for simulation of various optical properties of nanoparticles of arbitrary
shape and composition. We present a modification of the DDA to rigorously
treat particles located above the plane homogeneous substrate. The
modification is based on discretization of only the particle itself
and retains the three-dimensional fast Fourier transform acceleration
scheme of the free-space DDA; hence, it has the same order of computational
complexity. It is implemented in the recent version of the open-source
ADDA code, available for anyone to use. The method shows extremely
good accuracy (better than 0.4%) in test simulations of far-field
scattering for spheres and spheroids above transparent and metallic
substrates, using the T-matrix method as a reference. An example of
near-field calculation is presented for a silver sphere on a glass
substrate.