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CHANGELOG.md

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0.5 - 2020-05-11

  • New types of particles: sphere_cluster_particle for reducing a collection of spheres to a single particle. miepy.core_shell for a core-shell particle.
  • New dft_beam and scalar_dft_beam sources that take as input the E field in an XY-plane, and the angular far-field is determined via a discrete Fourier transform
  • New SLM-type source miepy.sources.phase_only_slm to phase modulate a beam
  • cluster.microscope feature to compute simulated microscope images of clusters
  • New optional optimization: miepy.sources.grid_interpolate_source takes a source and precomputes the structure coefficients on a grid for later interpolation
  • Better performance for miepy.cluster that contains many miepy.sphere particles
  • Other small performance enhancements
  • Bug fix: forces and torques off by an index of refraction of the medium

0.4 - 2019-05-30

  • Support for including an interface (substrate) in the simulation; all sources can be transmitted and reflected
  • Non-axisymmetric particles are now supported; ellipsoids, cubes, and regular prisms are defined
  • Focal fields of focused beams are computed exactly using the angular spectrum rather than via paraxial limit expressions
  • 3D scene visualization using the VPython library
  • Microscope module for producing simulated images of clusters through a lens system
  • New metal material for perfectly conducting objects
  • Method to compute the local density of states (LDOS)
  • Faster T-matrix initialization for particles of the same geometry by caching the non-rotated T-matrix
  • Performance critical code re-written in C++ and binded using pybind11; large speed-up for smaller clusters
  • Experimental support for OpenMP for shared-memory parallel execution
  • Platform support: now builds on Linux, MacOS and Windows

0.3 - 2018-07-16

  • Extension to non-spherical particles (spheroids and cylinders) using the T-matrix method
  • Plane waves and beams now have theta and phi variables to control their incident direction
  • 30x performance improvement for larger clusters

0.2 - 2018-06-13

  • New cluster class and removal of old spheres class for easier cluster creation
  • More useful E and H field functions that include interior field expansion, an option to mask the interior fields, a far-field option for more efficient far-field expansion, and a spherical option for evaluation the fields in spherical coordinates
  • Paraxial and non-paraxial focused beams have been added using a new source decomposition method (a hybrid near-field point-matching and far-field integration method)
  • All beams can now be power and phase controlled
  • New beams: bigaussian and paraxial (a generic paraxial beam with an arbitrary scalar potential)
  • VSH expansion coefficients combined into single array instead of two throughout the API
  • New example: focused Gaussian beam
  • Removed old cross-sections module

0.1 - 2018-03-29