[labnetwork] Gold Deposition over Chrome

[Jim Carroll]

Dear LabNetwork colleagues,

We are trying to add a thin film of gold over patterned chrome on a
standard photomask using e-beam evaporation.  We want the gold to
preferentially adhere to the chrome while lifting off the glass.

After a few tests, it appears that the gold sticks equally well to both the
glass and chrome.  Ultrasonic agitation and swabbing do not selectively
remove the gold from the glass while leaving it on the chrome.  Eventually,
after enough pressure is applied with a swab, the gold releases from both
the glass and chrome.

Does anyone have a suggested approach?

Thanks,
Jim Carroll
*PhotomaskPORTAL*
*We help you make masks*
(415) 448-6275

   -
   <http://www.photomaskportal.com>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mtl.mit.edu/pipermail/labnetwork/attachments/20190530/82d30b3e/attachment.html>