Dear Sir or Madam: I am a undergraduate student at University of California, Riverside studying Electrical Engineering. I, along with a few others, are working on a senior design project in the field of nanotechology. We are interested in purchasing any used AFM's, or any used components. Please email me back if you have anything for sell. If not, could you please give me some info on other places that might be able to help. Thanks, Ricky Ling