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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="moz-cite-prefix">On 2019-05-31 3:40 a.m., Morrison,
Richard H., Jr wrote:<br>
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<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">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?<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
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<p class="MsoNormal"><span
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<p class="MsoNormal"><span
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<p class="MsoNormal"><span
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<p class="MsoNormal"><b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">
<a class="moz-txt-link-abbreviated" href="mailto:labnetwork-bounces@mtl.mit.edu">labnetwork-bounces@mtl.mit.edu</a>
[<a class="moz-txt-link-freetext" href="mailto:labnetwork-bounces@mtl.mit.edu">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="moz-txt-link-abbreviated" href="mailto:labnetwork@mtl.mit.edu">labnetwork@mtl.mit.edu</a><br>
<b>Subject:</b> [labnetwork] Gold Deposition over Chrome<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<p class="MsoNormal"><span
style="font-family:"Verdana",sans-serif;color:black">Dear
LabNetwork colleagues,<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-family:"Verdana",sans-serif;color:black"><o:p> </o:p></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.<o:p></o:p></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.
<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-family:"Verdana",sans-serif;color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-family:"Verdana",sans-serif;color:black">Does
anyone have a suggested approach?<br>
<o:p></o:p></span></p>
</div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
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<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black">Thanks,</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black">Jim
Carroll<br>
<b>PhotomaskPORTAL</b></span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><i><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black">We
help you make masks</span></i><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black"><br>
(415) 448-6275</span><o:p></o:p></p>
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