All, BNC has ordered a 4 point probe system to be placed in the Electrical Characterization lab (BRK 2261). We have an offer by the manufacturer to send them samples for testing. These can be different substrates (Si, polymer etc.). If you have any such samples please send them to me and I'll forward them along. This exercise will also help us select the optimum probe tips for our system Thanks. -- Aamer Mahmood Microfab Research Engineer Birck Nanotechnology Center Discovery Park, Purdue University 1205 West State Street West Lafayette, IN 47907 USA Tel: +1(765) 494 6697