S-20 Osmond Lab
Penn State UniversityContacts:
Paul S. Weiss: stm@psu.edu
Daniel J. Fuchs djf162@psu.edu
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This STM and electronics were home built in our labs in the Fall of 2002. The STM operates at room temperature under ambient conditions and has lock-in capabilities. We will be using this STM for the collection of data for electronic properties of metallic nanoparticles that are covalently attached to the underlying gold substrate and nanoparticles in close proximity to one another. The strategy that we employ to attach nanoparticles to a surface involves the molecular insertion of bifunctional molecules into a host self-assembled monolayer matrix. Using molecular insertion instead of a coadsorbed film the crystalline order of the host SAM remains intact and serves to position the inserted molecules to defect sites in the film. This system is useful because only one end of the bifunctional molecule is attached to the gold surface and the other end of the molecule is free for further reaction.