Dear all, does anyone know how a deposited film (oxid or metall) influences the Q-Factor / damping of torsional resonators. Gas damping is investigated in different publications. I did not find much to friction within composite beams or a plastic portion within the torsion. Any idea or reference is highly appreciated. Best Regards in Advance ------------------------------------------- Dipl.-Ing. Torsten Kießling Fraunhofer Institute Photonic Microsystems Grenzstr. 28 D-01109 Dresden Tel.: +49(0)351/8823-283 Fax: -266 email: torsten.kiesling@ipms.fhg.de Internet: http://www.ipms.fhg.de/ -------------------------------------------