i'm working with the ti dmd's in a biotech application and had a couple of questions. has anyone characterized the mirrors with regard to their resonant or natural frequencies and does anyone know what kind of electrostatic and mechanical forces are involved in their operation. we have very crude estimates but are looking for some more reliable numbers than our back-of-envelope calculations. - kelvin liu ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com