Hi, was trying to reproduce the effects on this site:
http://zj.deathfall.com/trans.htm
After lots of futile attempts, it looks like the solution is very simple after all. Just one hemi light that shines at an angle from behind the subject. that’s all.
I gave Suzanne a little translucency and bump map for that S.E.M. look.
I will look up some real S.E.M. pics on the web and try to reproduce them in Blender.
Let me know if you have suggestions.
also try putting a negative lamp at the exact same coordinates as your camera. [!]
OK, I added the negative lamp, but I don’t think that it yields the S.E.M. look that well. You are only left with almost a silhoutte.
The first image is with the negative lamp and the second with only the hemi.