[Ifeffit] Substrate material question

[Jeff Terry]

Hi Paul,

Kel-f is good to a little over 200 C. I have mm thicknesses of it.

http://www.boedeker.com/pctfe_p.htm

Jeff

Jeff Terry
Biological, Chemical, and Physical Sciences
Illinois Institute of Technology
Chicago IL 60616
phone 630-252-9708
fax       630-252-0358
http://mrmac.mr.aps.anl.gov/~jterry/

On Apr 26, 2004, at 8:12 PM, Paul Fons wrote:

>
> OK, I admit this isn't an athena question (but it is about how to take 
> the raw data for it!).  I want to do biaxial strain measurements.  The 
> idea is to deposit a thin film of the material to be investigated on a 
> substrate and then deform the plate with a form of cylindrical 
> symmetry.  One can then solve for the stress of a plate using 
> elasticity theory.  The twist is that I need a plate that is stiff and 
> (surprise) x-ray transparent ... and heat resistant to about 250 C.  
> Kapton would be a wonderful choice, but is only made in thicknesses up 
> to 175 microns (hardly stiff enough).  There must be someone out there 
> in the collective iffeffit world who knows of an appropriate material. 
>  Doing some web surfing, I came across another product by DuPont 
> called Vespar that *may* be available in thicker forms.  The specs I 
> am looking for are:  a thin (semiconducting) film has to stick to the 
> surface, heat resistant to <=250 C, thick enough to be elastically 
> stiff, and x-ray transparent.  Any suggestions?  Thanks for any help 
> that may come my way in advance!
>
>
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> Dr. Paul Fons
> Senior Researcher
> National Institute for Advanced Industrial Science & Technology
> METI
> Center for Applied Near-Field Optics Research (CANFOR)
> AIST Central 4, Higashi 1-1-1
> Tsukuba, Ibaraki JAPAN 305-8568
>
> tel. +81-298-61-5636
> fax. +81-298-61-2939
>
> email: paul-fons at aist.go.jp
>
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