<div dir="ltr">To me it looks like dendritic growth from nucleation sites. I think the samples were not properly cleaned and  concur with Rick that some trace was left behind during sample preparation.<div><br></div><div>Cheers,</div><div><br></div><div>Carlos </div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Sep 9, 2022 at 6:58 AM Morrison, Richard H., Jr <<a href="mailto:rmorrison@draper.com">rmorrison@draper.com</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"><div class="msg-6644075807293070797">





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<p class="MsoNormal">Looks like either dried solvent trail or dried water trail, left behind when the liquid dried.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Rick<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Richard Morrison<u></u><u></u></p>
<p class="MsoNormal">PMTS<u></u><u></u></p>
<p class="MsoNormal">Draper Laboratory<u></u><u></u></p>
<p class="MsoNormal">555 Technology Square<u></u><u></u></p>
<p class="MsoNormal">Cambridge Ma  02139<u></u><u></u></p>
<p class="MsoNormal">Office: 617-258-3420<u></u><u></u></p>
<p class="MsoNormal">Cell: 508-930-3461<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal"><b>From:</b> labnetwork <<a href="mailto:labnetwork-bounces@mtl.mit.edu" target="_blank">labnetwork-bounces@mtl.mit.edu</a>> <b>
On Behalf Of </b>Saba Sadeghi<br>
<b>Sent:</b> Thursday, September 8, 2022 2:29 PM<br>
<b>To:</b> <a href="mailto:labnetwork@mtl.mit.edu" target="_blank">labnetwork@mtl.mit.edu</a><br>
<b>Subject:</b> [labnetwork] Thin film sputtering issue<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal"><span style="color:black">Dear colleagues,<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="color:black"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span style="color:black">I was hoping to get your input on a sputtering issue; the pictures attached are from a magnetron-sputtered metal film (200nm), growth rate of 3 A/s at elevated growth temperature. Can you identify these features
 and what could have caused them?<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="color:black"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span style="color:black">Thank you very much for your feedback,<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="color:black"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span style="color:black">Best,<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="color:black">Saba<u></u><u></u></span></p>
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</div></blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr">Carlos Gramajo<div>Cleanroom Research Scientist</div><div>Shared Equipment Authority (SEA), Rice University</div><div>Cell: 713-743-8115; Office: 713-348-8243; <a href="mailto:cg70@rice.edu" target="_blank">cg70@rice.edu</a></div></div></div>