[Ifeffit] Substrate material question

Carlo U. Segre segre at iit.edu
Mon Apr 26 21:24:19 CDT 2004


Paul:

What temperature do you need to have the substrate at during deposition?
Also, exactly what do you mean by transparent to x-rays, i.e. the energy?
If the energy is high enough a very thin Si wafer should work.

Carlo


On Tue, 27 Apr 2004, Paul Fons wrote:

> Wow that was fast.  Thanks.
> Can you deposit something on it and have it stick? e.g. the idea is to
> deposit a thin film of a semiconductor on it and then place the film
> under biaxial stress to look at structural changes by xafs.
>
>
> On Apr 27, 2004, at 10:24 AM, Jeff Terry wrote:
>
> > 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!
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >> 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
> >>
> >> The lines below are in a Japanese font
> >>
> >> ¢©£³£°£µ¡Ý£¸£µ£¶£¸
> >> °ñ¾ë¸©¤Ä¤¯¤Ð»ÔÅ죱¡Ý£±¡Ý1
> >> ¤Ä¤¯¤ÐÃæ±ûÂ裴
> >> ¶áÀܾì¸÷±þÍѹ©³Ø¥»¥ó¥¿¡¼
> >> ¥Ý¡¼¥ë¡¦¥Õ¥©¥ó¥¹¼çǤ¸¦µæ´±_______________________________________________
> >> Ifeffit mailing list
> >> Ifeffit at millenia.cars.aps.anl.gov
> >> http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit
> > _______________________________________________
> > Ifeffit mailing list
> > Ifeffit at millenia.cars.aps.anl.gov
> > http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit
> >
>
> 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
>
> The lines below are in a Japanese font
>
> ¢©£³£°£µ¡Ý£¸£µ£¶£¸
> °ñ¾ë¸©¤Ä¤¯¤Ð»ÔÅ죱¡Ý£±¡Ý1
> ¤Ä¤¯¤ÐÃæ±ûÂ裴
> ¶áÀܾì¸÷±þÍѹ©³Ø¥»¥ó¥¿¡¼
> ¥Ý¡¼¥ë¡¦¥Õ¥©¥ó¥¹¼çǤ¸¦µæ´±
>

-- 
Carlo U. Segre -- Professor of Physics
Associate Dean for Special Projects, Graduate College
Illinois Institute of Technology
Voice: 312.567.3498            Fax: 312.567.3494
segre at agni.phys.iit.edu    http://www.iit.edu/~segre



More information about the Ifeffit mailing list