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September 1999

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From:
"Ingemar Hernefjord (EMW)" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Wed, 29 Sep 1999 18:31:28 +0200
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Bill&Carey,
sure you really need to measure the pressure? Why?. Isn't the percentage of true contact what is of most interest? Calculated the need how to transport heat from sort of a Neumann computer, in principle everything on one wafer, and the contacting area seemed to be A&O. We proposed filling the microgaps with He, so force wasn't so critic. Of course you can't do that here, but Choterm's and other's cooling mats use to fill up enough. Just interested to know...../Ingemar


Bill,
Let me know if you need help on this.  There are straight foward ways to
measure contact pressure by placing known materials of specific hardness
where you want them and measuring indentation.  I have never done it, but it
is routine in some R&D labs.  I'm not a fab person, so I'm not familiar if
this is standard.
Carey



>Hi everybody:
>
>Does anyone know of any effective ways to measure contact surface force
>like between a heat
>sink and heat source?
>
>Thanks.
>Bill Ebner
>
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