Saturday, August 15, 2009

Project Updates / Status

It is quite some time I gave an update on the project. Over the vacations, I had done some work on some of the topics. I will summarized them here.

1) Understanding low work functions on FE. It is known that the material work function is very dependent on the FN theory. However, to be more efficient and use less power, having a low work function material for field emission seems to be a good idea. There are already some research on going in this area, however, most of them lack finer details that I need.

Initial results from simulations (2-3eV) seems in line with typical results (my working model as well as from the articles).

When the work function is made to be lower (< 1eV), on the first look, it follows the typical results. But on closer examination, it doesn't seemed to be so.

2) Tracking electron trajectories follows the classical laws of Physics.

Found some old sources and they revealed interesting behavior. Tempted to write for relativistic regimes but I better not to so.

3) Compiling xoopic doesn't seem to work. I got interested after reading Koh's thesis and from other articles especially from Journal of Applied Physics, but the package were dated in 2002. Searched and tested for the latest 2009 version produces lots of funny error messages. Note: Not a standard package.

4) Report writing

5) Planned for simulating for 2nd model using Zuber, etc. The program (2nd model)already completed and working in just a few days after the last paper.

I did not explore further into the space charge analysis and study the FE behavior due to lack of time. Anyway ,adding the model along with the results would bloat the report!

- wong chee tat :)