Alt-BEAM Archive
Message #08904
To: "beam@sgiblab.sgi.com" beam@sgiblab.sgi.com
From: "Dan Larson" dlarson@citilink.com
Date: Fri, 07 Jan 00 15:21:01 +0600
Subject: [alt-beam] Re: Pressure Sensors
Has anyone thought of mixing some carbon black or graphite
powder into some regular silicone rubber cement / caulking
compound? I wonder if that would work. The advantage
of that would be that you could form it to any shape that
you wanted (almost). Consistency may be a problem between
batches unless you could carefully measure each material.
Air bubbles formed in the mixing process may cause some
consistency troubles as well. Stick a blob if the mix
between two pennies and let it cure. Might make a neat
little "foot".... Wires could easily be soldered to each
penny.
On Fri, 07 Jan 2000 16:02:27 -0500, Sathe Dilip wrote:
>Hi Wilf,
>
>What you say is true & such a conductive rubber band will be ideal for
>many applications. However I haven't come across any easy/cheap source
>of such material. Once I was thinking about the antistatic mats. But
>their conductivity is very low & sometimes the rubber material is bonded
>to another cloth like layer. Do you know of something that will fit the
>bill?
>
>Meanwhile, the sandwich of a zebra strip (oriented properly) should work
>better than the foam.
>
>Dilip
>-----------------------------------------------------------
>
>Wilf Rigter wrote:
>>
>> Hi Sathe,
>>
>> The zebra strips do not conduct longitudinally (end to end) but only conduct
>> laterally (side to side) of the strip. But an all conductive elastomer
>> "rubber band" would provide both spring action and a changing longitudinal
>> resistance when stretched. This may make it suitable for use as tendons
>> providing direct feedback of the longitudinal force and displacement.
>
>SNIP
>--
>Pl. remove *s from the e-mail address to reply
>
Home