STM of conductive layers on glass
From: Bob (drfabius2000_at_hotmail.com)
Date: 01/27/05
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Date: 27 Jan 2005 16:58:36 GMT
I want to perform an STM measurement on a surface on a glass slide.
Now glass isn't terribly conductive so over the depth the resistance
is immense, but the layer will have a resistance of less than 300 ohm
over the horizontal latitude. Can the surface be touched by copper
foil or something alike to ensure conduction from the surface to the
puck for the STM apparatus? It will result in a gradient of voltage on
the surface depending on the position of the tip. But since typical
setpoints are like 100 picoampere and 100 millivolt, the tunneling
resistances are so many orders of magnitude greter than the surface
gradient that it should work in my point of view. The STM expert
didn't like my idea though. Anyone have a suggestion?
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