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Silver coating of atomic force microscopy (AFM) tips


I received your address from an electrochem grad student I know. He thought you might be able to offer some "newsgroup style" advice.

I need to apply a thin (1-2 um) silver coating to atomic force microscopy (AFM) tips. AFM tips are made of Si3N4. If I were to gold coat the tips first, I'm afraid electrodeposition would give me too thick a coating of silver. I'm (somewhat) familiar with sputter coating gold onto thiol derivatized tips, so I thought I could just change over to a silver target. Any suggestions?

Leon D [last name deleted for privacy by Editor]
Grad Student, Dept Chemistry, Univ. of Delaware


Silver sputtering should work. Silver targets are available I purchased one for a Polaron sputterer several years ago (can't remember the supplier but it was the same Co. we got our Au or Au-Pd targets from).

Paul Stransky
- Putnam, Connecticut

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