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<p class="MsoNormal">Hello,<span style="font-size:11.0pt"><o:p></o:p></span></p>
<p class="MsoNormal">Here at PRISM Cleanroom facility, in packaging room, we have Logitech Lapping/Polishing system (<a href="https://prism-cleanroom.princeton.edu/instrument.php?iid=39">https://prism-cleanroom.princeton.edu/instrument.php?iid=39</a>) and handmade
holder for die edge polishing (see attached picture). This setup was used once for polishing III-V edge emitting semiconductor lasers. Currently, in packaging laboratory, we also have new Loomis cleaving tool (<a href="https://prism-cleanroom.princeton.edu/instrument.php?iid=71">https://prism-cleanroom.princeton.edu/instrument.php?iid=71</a>
). The cleaved facets have a quality of a mirror and do not need subsequent polishing.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Best regards,<o:p></o:p></p>
<p class="MsoNormal">Zuzanna<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Zuzanna Lewicka<o:p></o:p></p>
<p class="MsoNormal">Senior Research Specialist<o:p></o:p></p>
<p class="MsoNormal">PRISM Cleanroom Laboratory<o:p></o:p></p>
<p class="MsoNormal">Princeton Institute for the Science and Technology of Materials<span style="font-size:11.0pt"><o:p></o:p></span></p>
<p class="MsoNormal">Princeton University<o:p></o:p></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 <labnetwork-bounces@mtl.mit.edu>
<b>On Behalf Of </b>Michael Rooks<br>
<b>Sent:</b> Thursday, February 13, 2020 9:48 AM<br>
<b>To:</b> Iulian Codreanu <codreanu@udel.edu><br>
<b>Cc:</b> Fab Network <labnetwork@mtl.mit.edu><br>
<b>Subject:</b> Re: [labnetwork] Polishing tool<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">We have a low-cost polisher from Allied High Tech<o:p></o:p></p>
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<p class="MsoNormal"><a href="http://www.alliedhightech.com/Equipment/metprep-1">http://www.alliedhightech.com/Equipment/metprep-1</a>™-grinder-polisher<o:p></o:p></p>
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<p class="MsoNormal">which is used to polish the ends of waveguides. Wafers are mounted on<o:p></o:p></p>
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<p class="MsoNormal">either a wedge polishing or cross-sectioning jig (also from Allied High Tech).<o:p></o:p></p>
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<p class="MsoNormal">It's best to put it next to a sink, in a dirty lab.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I suggest plugging it into a foot-pedal which acts as a dead-man's switch.<o:p></o:p></p>
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<p class="MsoNormal">It's handy for stopping the wheel without taking your hands off the jig, and<o:p></o:p></p>
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<p class="MsoNormal">it's a good safety device to reduce the risk of injury. It's a spinning wheel that<o:p></o:p></p>
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<p class="MsoNormal">you'll want to supervise much like a band saw or a drill press. Keep some bandaids <o:p></o:p></p>
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<p class="MsoNormal">nearby.<o:p></o:p></p>
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<p class="MsoNormal"><br clear="all">
<o:p></o:p></p>
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<p class="MsoNormal">--------------------------------<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:7.5pt">Michael Rooks</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:7.5pt">Yale Institute of Nanoscience and Quantum Engineering</span><o:p></o:p></p>
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<p class="MsoNormal"><a href="http://nano.yale.edu" target="_blank"><span style="font-size:7.5pt">nano.yale.edu</span></a> <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Wed, Feb 12, 2020 at 7:55 PM Iulian Codreanu <<a href="mailto:codreanu@udel.edu">codreanu@udel.edu</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">Hello,<br>
<br>
I am looking into offering capabilities for polishing the edge of chips <br>
to our users working on optical devices. If you have equipment in your <br>
lab that does that, I hope you can share your experience and <br>
recommendations with me or the network.<br>
<br>
Thank you in advance for your help.<br>
<br>
Best regards,<br>
<br>
Iulian<br>
<br>
<br>
-- <br>
iulian Codreanu, Ph.D.<br>
Director, Nanofabrication Facility<br>
University of Delaware<br>
Harker ISE Lab, Room 163<br>
221 Academy Street<br>
Newark, DE 19716<br>
302-831-2784<br>
<a href="http://udnf.udel.edu" target="_blank">http://udnf.udel.edu</a><br>
<br>
<br>
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