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Rank-one Decomposition accelerated DDA method (RD-DDA)
Link (2 May 2023)
TransitionMatrices.jl
The Julia package `TransitionMatrices.jl` by Zihua Wu implements the classic EBCM method, supporting arbitrary precision and automatic differentiation. To calculate the T-Matrix of various types of scatterers the EBCM and the Invariant Imbedding T-Matrix Method (IITM) is implemented.
Extended DDA (e-DDA)
Extended discrete dipole approximation, DDA application to bianisotropic media.
Scattering Dynamics
scadyn is a code for scattering dynamics calculations, which utilizes a volume integral equation solution to compute the T-matrices of non-spherical scatterers (T-VIE) .
Postdoctoral Position (May 5, 2023)
Soot Absorption Cross Section Measurements
Kansas State University - Physics
A postdoctoral position is now open to perform experiments to measure and understand the absorption cross section of soots formed from detonations. This work will be done in the near infrared (NIR). Methods will involve dispersion of soots as aerosols and as suspensions in liquids with known refractive index. Then transmission of light through the sol will be measured. These measurements will be augmented with both static and dynamic light scattering measurements to characterize the size and morphology of the suspended particles. Corrections for the medium refractive index will be developed. Studies of the effects of source, size and morphology will be performed. There will be strong theoretical support via collaboration with another scientist. Applicants should have strong experimental skills in optics, problem solving, and understanding experimental results. This position could start immediately, and funding is ensured to the end of calendar 2024.
More information can be obtained from C. M. Sorensen at This email address is being protected from spambots. You need JavaScript enabled to view it..
Multipole Decomposition
Multipole Decomposition comming with PyGDM. The formalism allows calculating the extinction and scattering spectra of arbitrary shaped nanostructures.
RETOP
RETOP is an free Matlab toobox that implements a near-to-far-field transformation for computing the radiation diagram. RETOP operates for objects on substrates or buried in stratified media.
PyMieLab
PyMieLab can calculate optical parameters including far-field and near-field parameters. PyMieLab provides a particle refractive index database with 2841 sets of experimental data for 370 materials. PyMieLab has a friendly GUI with many interactive menu bars, tools, and buttons.
- Link (10 April 23)
- paper (comparing the capabilities of different Mie tools)
Magnetic sphere
FORTRAN code printed in the report Milham, Merill E.: Electromagnetic Scattering by Magnetic Spheres: Theory and Algorithms. Edgewood Research Devellopment and Engineering Center Aberdeen Proving Ground MD, ADA289798, 1994-10-01.
Fortran 95 Mie Theory Library
The library explicitly defines the spherical Bessel functions and associated Legendre polynomials. The library is optimized to the extent of removing extraneous variables and
combing loops to reduce the total number of iterations, and using Gfortran compilation options and constraints.
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