Hi Daniel, you can do a si-direct bond. the requirements for the wafers are a very good TTV and a chemical clean process before cleaning. If you have further interest in direct bonding or other kinds of bonds, you can write me a email. Best Regards, Volkan -----Ursprüngliche Nachricht----- Von: Danielq k [mailto:danielqk@gmail.com] Gesendet: Mittwoch, 27. Oktober 2004 21:27 An: mems-talk@memsnet.org Betreff: [mems-talk] wafer bonding Hi all Any one know how to bond two si wafers? what requirement in term of heat, vacuum, chemical clean.. Thanks Daniel