Please try this vendors:

Wafer World Inc.: Tel. 561-842-4441, Fax 561-842-2677,
www.waferworld.com, email: [email protected]. I
know they have sapphire.

b.       Silicon Quest International: Tel.
408-496-1000, Fax 408-496-1133, www.siliconquest.com

c.       Montco Silicon Technologies, Inc.: Tel.
610-948-6880, Fax 610-948-8014, www.silicon-wafers.com


Imran
--- Robert Dean  wrote:
> Hello,
>
> Does anyone have some 100mm diameter silicon wafers
> 400um thick or thicker,
> with a resistivity of 1 to 10 Ohm-cm; with a good
> electrically insulating
> layer of SiO2 5um thick on the polished side?  If
> so, I would like to
> discuss purchasing them immediately, for use in a
> MEMS project.
>
> Sincerely,
>
> Robert Dean
>
> Research Associate IV
> Center for Advanced Vehicle Electronics
> Auburn University
> 200 Broun Hall
> Auburn, AL 36849
>
> Voice: 334-844-1838
> Fax:   334-844-1898
> Email: [email protected]
> Web: http://www.eng.auburn.edu/~deanron
>
>
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