Re: STM of conductive layers on glass

From: Calum Dickinson (cd29_at_st-andrews.ac.uk)
Date: 02/04/05 

Date: 4 Feb 2005 17:13:38 GMT

What about indium tin oxide coated glass? not familiar with STM so whether
that would work or not is beyond me

CD

On 27 Jan 2005, Bob wrote:

>
> 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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