4um or even 6um or even 15um Si02 coated wafers are quite different than SOI wafers with a 6um BOX layer. The former is quite easy to supply, while bonding two wafers with 6um of oxide between them could prove to be quite a challenge to most if not all of the SOI manufacturers. I you need the wafers with high thickness Si02, let me know. Regards, Ken Smith Soojin Oh wrote: > I am not sure if you still need this information. I > could buy 4 micron thermal oxide wafers from this > company. (www.universitywafer.com) I recall they even > had 10 micron thick oxide wafers. But know the price > is outrageous. > Best regards. > Sue > > --- sckweon@samsung.co.kr wrote: > >>Hello! >> >> We are trying to find SOI wafer with thick SiO2 >>layer about 6um thickness. >> >>Or If you know some group or person who deposite >>SiO2 film more than 6 um. Please, >> >>Let me know the contact point. >> >> We are looking for sacrificial layer for >>poly-silicon actuator structure. >> >> >>Have a nice day for everybody. >> >> >> >>---------------------------------- >>Soon Cheol Kweon >> >>Members of Technical Staff. >>MEMS Lab. >> >>SAMSUNG >>Advanced Institute of Technology >> >>P.O.Box 111, Suwon >>440-600, KOREA >> >>TEL:82-31-280-9448 >>Fax:82-31-280-9473 >>E-mail:sckweon@samsung.co.kr >> infiniti@samsung.com Kmbh Associates 47 Rocket Circle Rancho Cordova, CA 95742 U S A 510-714-5055 Efax- 510 217 4421 or 561 658 6136 High Purity Float Zone and Specialty CZ Silicon for Power, IR and Mirror Optics, Optoelectronics, MEMS, SOI, and other Semiconductor applications. Service in SOI, Polishing SSP and DSP. Quartz, Glass, Pyrex and Borofloat Wafer Supply. Anodic Bonding. SOG, SOS.