I am looking for a material with the same properties of silicone (flexible, easy to manipulate, soft, etc.) but without being a thermal isolate.

I need this material to do the junction between a temperature sensor and the human skin (this is why I need it to be soft).

So far I've used the ELASTOSIL® E43 but without good results.

  • $\begingroup$ For microelectronic packaging people use 'loaded' epoxies to increase thermal conductivity. Silver is a common loading and can be used if you want conductivity (ground contact). If an insulating bond is desired, the often use alumina powder. The trick is to find a balance of loading and other properties of interest. $\endgroup$ – Jon Custer Jun 28 '17 at 13:01
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    $\begingroup$ Beryllium oxide is used to improve the thermal conductivity of silicone pastes used on heat sinks... but BeO is toxic. See en.wikipedia.org/wiki/Beryllium_oxide $\endgroup$ – DrMoishe Pippik Jun 30 '17 at 22:42

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