2.3.1

New features

• CLI now prints usage instructions when run without arguments; demo simulation requires explicit --demo flag
• Ctrl+C exits cleanly with a message instead of a traceback
• Temperature profile and heat flux plots now show a linear fit and mean overlay for the last timeframe
• Electron mode: added Fermi level indicator to the mapping constant plot; increased default ENERGY_UPPER_BOUND to 6 kT for better integral convergence

Bug fixes

• Fixed first-pixel spike in heat flux profiles, which was skewing the thermal conductivity calculation
• Fixed scattering statistics double-counting interface transmission events, causing percentages to exceed 100% in electron mode

Minor improvements and fixes: updated default simulation parameters, removed misleading phonon-specific plots from electron output, improved output warnings, code and output cleanup

2.2.2

• Bug fixes related to 2D materials
• Bug fixes related to MFP sampling mode

2.2

Thanks to the contribution by @Si-m0n and @victor160103 we are excited to announce version 2.2 🚀

New in this release

• Simulation of electron transport
• Scattering of thin layers of another material
• Various minor improvements

2.1

New in this release

• Implemented depth parameter in rectangular holes. This enables adding tranches instead of complete holes.
• Implemented interfaces. Now the interface plane can be added with certain transmission probability.
• Various small improvements

2.0

New in this release

• New scattering angle distribution plot
• Better implementation of logging
• Correction of some scattering probabilities
• Correction of heat flux maps
• Correction of Si heat capacity
• Safer outputs

1.9

New in this release

Thanks to the work by @phigas this version has multiple improvements, including:

• New hole types that can be easily defined via coordinates
• Much improved profiles, maps and thermal conductivity calculations
• Improved phonon sources
• Improved documentation
• Improved plots
• Fixed parabolic hole
• Fixed holes in the holes bugs
• Refactoring of the code related to scattering, holes, sources, and materials
• Added various warnings
• and many other fixes...

Breaking changes

• Heat capacity is no longer defined in the input file, but is determined automatically. #9
• Added new parameters NUMBER_OF_VIRTUAL_TIMESTEPS and NUMBER_OF_STABILIZATION_TIMEFRAMES, see documentation.
• Angle distribution is sources are changed. See documentation.

1.8

New in this version

• Improved thermal conductivity calculation
• Implemented output of heat flux maps, thanks to the work by @fbarbierchebbah
• Minor plotting improvements
• Improving examples

1.7

New in this release

• Multiprocessing. Thanks to the efforts of @phigas, FreePATHS can now use multiple cores which speeds up the simulations many times. To enable it, add NUMBER_OF_PROCESSES = N to your config, where N is the desired number of processes to use.
• Added Graphene/Graphite material and the ability to simulate 2D materials. See this example.
• Implemented cumulative thermal conductivity calculations.
• Colorized output.
• Minor improvements

1.6

New in this release

• The ability to create multiple phonon sources
• Reimplementation of the holes
• Implementation of semicircles by Felix Barbier
• Calculation of heat flux projections
• Various small improvements

1.4

New in this release

• The ability to create more than one hot or cold sides
• Improving behavior of the hot side
• Minor fixes