We get alumina substrates from Coorstek, they have 100 mm disks.

http://www.coorstek.com/resource-library/library/8510-1041_thin_film_design_guide.pdf

A company that can deposit (DVM) the TiO2 is likely to be able to sputter 
or DVM the Pt.  A lot of  smaller companies would do this for you, but 
you'll have to pay for a whole chamber run for both materials, and that's 
expensive.

Google < DVM TiO2 > and call them.

Karen Tellefsen - Electrical Testing
Alpha / 109 Corporate Blvd./ S. Plainfield, NJ 07080
[log in to unmask]
908-791-3069




From:   Joyce Koo <[log in to unmask]>
To:     <[log in to unmask]>, 
Date:   05/16/2014 11:36 AM
Subject:        Re: [TN] need alumina wafers
Sent by:        TechNet <[log in to unmask]>



Syed,
(1) most likely you not going to get a wafer but a plate of alumina 
(square not round).  It just nature of the beast of ceramic.
(2) most likely, you are going to get a alumina with glazed surface - sio2 
rich layer with smooth surface - you need to look at substrate supplier 
that specialize LTCC or high temperature/high power device ceramic 
substrate.
(3) as for TiO2 and Pt metallization, you might have to go to 3rd party 
house to specially made.  Pt is easy - your school electron microscopy 
facility may have SEM sputter coater that uses Pt.  As for TiO2, you are 
looking at specialized service.  Most likely, you are not going to get a 
quote from one place that provide you with all of the stuff you want.  For 
qty of 5 pieces, you better try some national research lab, see if anyone 
would do a special job without burn a hole in your pocket.  (The semi 
house that have everything would never provide you with a special run that 
potentially contaminate their chamber).
My 2 cents. 


Joyce Koo
Senior MIL Specialist
Materials Interconnect Lab
Office: +1 (519) 888-7465 x 79945
BlackBerry: +1 (226) 220-4760





-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Ahmad, Syed
Sent: Friday, May 16, 2014 10:24 AM
To: [log in to unmask]
Subject: [TN] need alumina wafers

Dear TechNet Denizens,
We are in need of 5 ea.  100 mm alumina wafers.   To add to that it would 
be beneficial if someone could quote us 5 100 mm alumina wafers with a 
SiO2 layer, TiO2 layer followed by a Pt layer.   If you are able to 
accomplish this please email back and contact us. It will also help if 
sources can be referenced.
Thank you for your help.
Syed Sajid Ahmad, Manager of Engineering Services Center for Nanoscale 
Science and Engineering (CNSE) NORTH DAKOTA STATE UNIVERSITY Research 2
1805 NDSU Research Park, Fargo ND 58102
Phone 701 231 5880 Fax 701 231 5306
www.ndsu.edu/cnse<http://www.ndsu.edu/cnse>
[cid:3365659872_47370]



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