Monthly Archives: November 2013

Simulating Semiconductor Devices with COMSOL Multiphysics

Very interesting video about using a multi-physics software to do TCAD Device simulation:

Traditionally using a Finite Element approach, they added the ability to use Finite Volume. This is important to use Scharfetter-Gummel to solve the device currents. In their presentation, they discuss how the Finite Element method has difficulty conserving current.

Their module has limited range of models, but it has the advantage of creating your own expressions for models. Your device may be coupled in a multi-physics system (e.g. Heat Transfer). Using the Finite Volume approach, this has severe limitations, which will be addressed by them in a future release.

Nanouse Mailing List

Zbigniew Koziol has started a mailing list at Yahoo Groups.
From the site:
Discussions on software used in nanotechnology, commercial and open source. How to use it, examples of programming. Connecting with other users and developers: Synopsys Sentaurus TCAD, Comsol Multiphysics, Nextnano, Nemo5, QuantumEspresso, Archimedes, and more… Discussing physical and engineering modeling problems, sharing code and ideas, etc.

Xyce Parallel Circuit Simulator is open source

Sandia National Laboratories has open sourced their parallel circuit simulator.  Also available is documentation and a full set of regressions.  Check out their site at From their site: Xyce is an open source, SPICE-compatible, high-performance analog circuit simulator, capable of solving extremely large circuit problems by supporting large-scale parallel computing platforms. It also supports serial execution on all common desktop platforms, and small-scale parallel runs on Unix-like systems. In addition to analog electronic simulation, Xyce has also been used to investigate more general network systems, such as neural networks and power grids. Xyce developer Eric Keiter has an announcement here on SemiWiki.


This blog focuses on both EDA and TCAD software.  From time to time I’ll be posting about these topics and hope that you find these useful.