<div dir="ltr">Maybe I'm not understanding your process correctly, but couldn't you just write the mask inverted, develop, evaporate your Au, lift-off, then Cr etch? The Au will act as a your mask then for the Ctr etch.<div>-Greg</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, May 31, 2019 at 7:37 PM Nathanael Sieb <<a href="mailto:sieb@4dlabs.ca">sieb@4dlabs.ca</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<p>A similar interesting idea might be to use a fluoro-silane to
make a fluorinated surface in the glass areas. I've never tried
it before for this application, but it might work.<br>
</p>
<p>Thanks,</p>
<p>Nathanael<br>
</p>
<div class="gmail-m_-4143726145614814600moz-cite-prefix">On 2019-05-31 3:40 a.m., Morrison,
Richard H., Jr wrote:<br>
</div>
<blockquote type="cite">
<div class="gmail-m_-4143726145614814600WordSection1">
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">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?<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Rick<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p>
<p class="MsoNormal"><b><span style="font-size:11pt;font-family:Calibri,sans-serif">From:</span></b><span style="font-size:11pt;font-family:Calibri,sans-serif">
<a class="gmail-m_-4143726145614814600moz-txt-link-abbreviated" href="mailto:labnetwork-bounces@mtl.mit.edu" target="_blank">labnetwork-bounces@mtl.mit.edu</a>
[<a class="gmail-m_-4143726145614814600moz-txt-link-freetext" href="mailto:labnetwork-bounces@mtl.mit.edu" target="_blank">mailto:labnetwork-bounces@mtl.mit.edu</a>]
<b>On Behalf Of </b>Jim Carroll<br>
<b>Sent:</b> Thursday, May 30, 2019 4:24 PM<br>
<b>To:</b> <a class="gmail-m_-4143726145614814600moz-txt-link-abbreviated" href="mailto:labnetwork@mtl.mit.edu" target="_blank">labnetwork@mtl.mit.edu</a><br>
<b>Subject:</b> [labnetwork] Gold Deposition over Chrome<u></u><u></u></span></p>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<div>
<p class="MsoNormal"><span style="font-family:Verdana,sans-serif;color:black">Dear
LabNetwork colleagues,<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:Verdana,sans-serif;color:black"><u></u> <u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:Verdana,sans-serif;color:black">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.<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:Verdana,sans-serif;color:black"><br>
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.
<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:Verdana,sans-serif;color:black"><u></u> <u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:Verdana,sans-serif;color:black">Does
anyone have a suggested approach?<br>
<u></u><u></u></span></p>
</div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<p class="MsoNormal"><span style="font-size:10pt;font-family:Verdana,sans-serif;color:black">Thanks,</span><u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10pt;font-family:Verdana,sans-serif;color:black">Jim
Carroll<br>
<b>PhotomaskPORTAL</b></span><u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><i><span style="font-size:10pt;font-family:Verdana,sans-serif;color:black">We
help you make masks</span></i><span style="font-size:10pt;font-family:Verdana,sans-serif;color:black"><br>
(415) 448-6275</span><u></u><u></u></p>
</div>
</div>
<div>
<p class="MsoNormal" style="margin-left:0in;line-height:14.4pt;vertical-align:baseline">
<span style="font-size:10pt;font-family:Symbol"><span>·<span>
</span></span></span><span style="font-size:8pt"><a href="http://www.photomaskportal.com" target="_blank"><span style="border:1pt solid windowtext;padding:0in;text-decoration:none"><img id="gmail-m_-4143726145614814600_x0000_i1025" src="cid:16b1d54a4e14ce8e91" alt="Image removed by sender." width="200" height="56" border="0"></span><br>
</a></span><span style="font-size:8.5pt"><u></u><u></u></span></p>
</div>
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<hr>
<span style="font-family:arial,helvetica,sans-serif"><strong>Nathanael
Sieb</strong></span><br>
<span style="font-family:arial,helvetica,sans-serif;font-size:x-small"> Director of
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