Re: [ATM] Low Temperature Bonding

["matt" <electro_optic@bellsouth.net>]

I think the Stanford guys actually contracted this with the U of Arizona ,
after trying it and failing with other teams.
You can find a lot of very good information on the NAsa Tech Briefs website
.
http://www.nasatech.com/
Go to the tech brief library , or to technical support packages. Enough info
to dig for a lifetime.

best regards,
matt tudor

-----Original Message-----
From: Vladimir Galogaza <vladimir.galogaza@zg.htnet.hr>
To: ATM List <atm@atmlist.net>
Date: Thursday, February 24, 2005 3:05 AM
Subject: Re: [ATM] Low Temperature Bonding


>Hi Don,
>
>Manufacturing of the Gravity Probe B included  a quartz telescope
>(For details see
>http://einstein.stanford.edu/content/story_of_gpb/gpbsty6.html  )
>
>Stanford guys used Van der Waals molecular forces for bonding its parts.
>Quoting from html reference:
>
>Optical Contacting: the Marriage of True Parts
>Another factor in the telescope's exceptional stability is that its twenty
>separate component parts are all held together by a technique known as
>optical contacting. No cements, no mechanical attachments; instead, the
>surfaces of it and the quartz block containing the gyroscopes are made so
>flat and clean that they become permanently joined through molecular
>adhesion, almost as if the entire structure had been sculpted out of one
>massive chunk of fused quartz.
>
>The GPB survived the launch proving that this bonding style is mechanically
>reliable.
>
>Vladimir.
>
>
>
>
>
>
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>
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