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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 style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Rick<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 style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><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"><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"> labnetwork-bounces@mtl.mit.edu [mailto:labnetwork-bounces@mtl.mit.edu]
<b>On Behalf Of </b>Jim Carroll<br>
<b>Sent:</b> Thursday, May 30, 2019 4:24 PM<br>
<b>To:</b> labnetwork@mtl.mit.edu<br>
<b>Subject:</b> [labnetwork] Gold Deposition over Chrome<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-family:"Verdana",sans-serif;color:black">Dear LabNetwork colleagues,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana",sans-serif;color:black"><o:p> </o:p></span></p>
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<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>
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<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>
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<p class="MsoNormal"><span style="font-family:"Verdana",sans-serif;color:black"><o:p> </o:p></span></p>
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<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>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black">Thanks,</span><o:p></o:p></p>
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<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>
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<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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