[labnetwork] Gold Deposition over Chrome

[Morrison, Richard H., Jr]

Here’s a crazy idea try vapor HMDS, it will react with the glass but not the Chrome and it might help. Gold does not really like to stick to glass how thick is the film?

Rick



From: labnetwork-bounces at mtl.mit.edu [mailto:labnetwork-bounces at mtl.mit.edu] On Behalf Of Jim Carroll
Sent: Thursday, May 30, 2019 4:24 PM
To: labnetwork at mtl.mit.edu
Subject: [labnetwork] Gold Deposition over Chrome

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
·         [Image removed by sender.]
<http://www.photomaskportal.com>
________________________________
Notice: This email and any attachments may contain proprietary (Draper non-public) and/or export-controlled information of Draper. If you are not the intended recipient of this email, please immediately notify the sender by replying to this email and immediately destroy all copies of this email.
________________________________
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mtl.mit.edu/pipermail/labnetwork/attachments/20190531/79948683/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.jpg
Type: image/jpeg
Size: 463 bytes
Desc: image001.jpg
URL: <https://mtl.mit.edu/pipermail/labnetwork/attachments/20190531/79948683/attachment.jpg>