Try AFM (Atomic Force Microscopy). This is one of the few techniques that can operate at this level. If your sample is conductive, you can use the variant known as Scanning Tunneling Microscopy, which allows a few other things to be learnt about the sample. The biggest supplier of AFMs is probably Digital Instruments. Check their website for more information on the technique. Regards, Martin Walker (Oxford Instruments) ----- Original Message ----- From: "Jiangang Du (John Duke)"To: Sent: Saturday, November 10, 2001 3:27 AM Subject: [mems-talk] Surface Roughness > Dear all, > Can anybody recommend my a method or a instrument that will measure surface roughness down to 1 anstrom. > Thanks a lot > > > > > > Regards, > > John Duke > _______________________________________________ > mems-talk@memsnet.org mailing list: to unsubscribe or change your list > options, visit http://fab.mems-exchange.org/mailman/listinfo/mems-talk > Hosted by the MEMS Exchange, providers of MEMS processing services. > Visit us at http://www.mems-exchange.org/