[Ifeffit] Substrate material question
paul-fons at aist.go.jp
Mon Apr 26 20:12:48 CDT 2004
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!
Dr. Paul Fons
National Institute for Advanced Industrial Science & Technology
Center for Applied Near-Field Optics Research (CANFOR)
AIST Central 4, Higashi 1-1-1
Tsukuba, Ibaraki JAPAN 305-8568
email: paul-fons at aist.go.jp
The lines below are in a Japanese font
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