Greetings-- and Happy New Year! Cam is a basic mechanical element used widely at the macro-scale machinery (e.g., for valve control in IC engines) There have been some instances of cams in MEMS devices (e.g., the vibromotor). I am looking for more examples. If you know of any examples of cams used in MEMS, particularly ones used in practical applications, please let me know by sending e-mail to gksuresh@seas.upenn.edu. Best regards, Suresh -- (Suresh) G. K. Ananthasuresh Assistant Professor, Mech. Engrg. And Appl. Mech., University of Pennsylvania 297 Towne Bldg., 220 S. 33rd Street, Philadelphia, PA 19104-6315 Tel:(215) 898-7191; FAX:(215) 573-6334; E-mail: gksuresh@seas.upenn.edu URL: www.seas.upenn.edu/~gksuresh