http://www.devsim.com/blog TCAD Tue, 03 Nov 2009 02:06:39 +0000 http://backend.userland.com/rss092 en Attached are pictures from a MOSFET simulation operating in the saturation region. The simulation results are all for the same bias point using the combined electron mobility model. The Klaassen (Philips) mobility model was implemented for doping and concentration dependence. The Darwish (Lucent) model was then used to account for the ... http://www.devsim.com/blog/?p=112 I am glad I went to this year's SISPAD 2009. There were many fascinating papers and I had the opportunity to meet with several researchers doing some interesting work. There were many papers using Non-Equilibrium Green's Functions~(NEGF). I've always had difficulty in understanding the approach, but Dipanjan Basu from ... http://www.devsim.com/blog/?p=105 As a follow up to the previous post: http://www.devsim.com/blog/?p=86 Here are the results when 3d versions of the structures were created. The active areas are in the center of the device, and the rest of the device are translucent. [gallery] http://www.devsim.com/blog/?p=94 I became interested in replicating the results in this paper: Y. Liu, J. Sauer, and R. Dutton, "Effect of electro-diffusion current flow on electrostatic screening in aqueous pores," Journal of Applied Physics, Vol. 103, p.084701, 2008 which Dr. Liu provides on his website here: http://www-tcad.stanford.edu/~yangliu/ The two plots in this post reflect the effect ... http://www.devsim.com/blog/?p=86 While our primary development platform is 64-bit Linux, work is in process to get Devsim working on 32-bit Windows. It has been challenging, but thankfully the porting process has become easier as compiler vendors have become more standards compliant. It is especially nice that the majority of the ... http://www.devsim.com/blog/?p=83 This is a simulation of a single conductor above a ground plane. The simulation window is actually much larger to ensure proper boundary conditions. http://www.devsim.com/blog/?p=78 This past week I've been experimenting with solving magnetic field problems. Here is my first result. Two wires are in the center of the figure with current flowing in opposite directions. The solution variable is the magnetic vector potential, A, and is shown in the color gradient. ... http://www.devsim.com/blog/?p=65 A new white paper concerning sensitivity analysis is available here: TCAD Sensitivity Analysis for Device Optimization http://www.devsim.com/blog/?p=56 I have uploaded a white paper to the website. It discusses some of the concepts behind Devsim. Symbolic Model Evaluation for TCAD Device Simulation http://www.devsim.com/blog/?p=52 Nothing more fun than writing documentation. Of course, no one can use your software if you don't provide instructions. Contrary to what many software developers believe, providing an example is not the same as providing documentation. http://www.devsim.com/blog/?p=47