I would need to stick two opposite edges of a sample on two small metallic plates (as it were a bridge). The sample is Silicon and on top an high temperure superconductor which is Temperature sensitive. This means that the procedure is done at -40 degrees maximum.

I tried to use U300 epoxy, but this does not work since the reaction of the two components is not activated at this low temperature.

Do you know a special glue that can work? Please be aware that I will perform experiments at few Kelvin, so the glue (or whatever) should be cryo.

  • 2
    $\begingroup$ Have you looked into UV curing adhesives? $\endgroup$ – Jonathan R Swift Dec 1 '20 at 9:47
  • $\begingroup$ Can you specify which units? Probably Fahrenheit or Celsius, which both at -40 mean the same temperature, but maybe you ment a more exotic unit. $\endgroup$ – fibonatic Dec 2 '20 at 4:11

If you can find a liquid whose melting point is slightly above $-40\,\mathsf{^{\circ}C}$, pre-chill it to just above its melting point, then squirt some on to your bridge (in a controlled environment below $-40\,\mathsf{^{\circ}C}$) and let it freeze, it might form a cement that will hold the bridge together. Heptanol has about the right melting point, but I have no idea what the safety requirements for handling it are.

(Idea based on the work of Jean-Robert Murat, who was using fresh water as a glue to stick strain gauges to Arctic sea ice in the early 1980s.)


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.