Mike Raiford wrote:

> All coated in a thin layer of gold...

...like this:

http://upload.wikimedia.org/wikipedia/commons/c/ca/Golden_insect_01_Pengo.jpg

Actually, apparently you can design a SEM that works without the gold 
coating, but the resolution is lower. (And you still can't do it with 
"wet" samples; they must be dried somehow first.)

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