<div dir="auto"><div dir="auto">Hello Esta,</div><div dir="auto">Adehsion issue occurs in this most so slowly ramping temp works well, Coat PR on PDMS, put sample at hotplate @50deg C and ramp up to 80deg C for 2min.</div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto">Next shrink/expand issue: during deposition/ evaporation chamber temp should not exceed more than 90deg C.</div><div dir="auto"><br></div><div dir="auto">Thanks,</div><div dir="auto">Hitesh </div><div dir="auto"><br></div><br><div class="gmail_extra" dir="auto"><br><div class="gmail_quote">On 26-Jan-2018 6:35 AM, "Mohamed Ghoneim" <<a href="mailto:mghoneim@mit.edu">mghoneim@mit.edu</a>> wrote:<br type="attribution"><blockquote class="quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">**This might work for having electrodes on PDMS without running into thermal expansion/shrinking issues.....but it depends on what you are trying to do ultimately.<div><br><div><img src="cid:ii_1612f1df9dbd6b46" alt="Inline image 1" width="562" height="164"><br></div></div><div><br></div><div>**You can also try transfer printing the electrodes or using the traditional process with PR (additive or lift-off) but with slower heating up and cooling down rates (sometimes, moving to 70% of required temperature then 100% does the trick and same when cooling down to room temperature).</div><div><br></div><div>Best of luck and wish you all a great day!</div><div class="gmail_extra"><br clear="all"><div><div class="m_-8735761863790446093m_-1018640453968344370m_5843938381277008344gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div style="font-size:12.8px"><div style="font-size:12.8px"><a href="https://scholar.google.com/citations?hl=en&user=-5mNcfYAAAAJ&view_op=list_works&sortby=pubdate" style="font-size:12.8px" target="_blank">Mohamed T. Ghoneim</a><span style="font-size:12.8px">, </span><div style="font-size:12.8px">Postdoctoral Researcher</div><div style="font-size:12.8px"><span style="font-size:12.8px">MIT </span><span style="font-size:12.8px">Media Lab, Building E-15, Fourth Floor, Room 443g.</span><br></div><div style="font-size:12.8px"><span style="font-size:12.8px"><a href="https://sites.google.com/view/mtghoneim" target="_blank">Website</a></span></div></div></div></div></div></div></div></div></div></div></div></div></div>
<br><div class="gmail_quote"><div class="elided-text">On Thu, Jan 25, 2018 at 9:59 AM, Carsen Kline <span dir="ltr"><<a href="mailto:carsen@stanford.edu" target="_blank">carsen@stanford.edu</a>></span> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="elided-text">
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<p class="MsoNormal"><span style="color:#1f497d">Hello Esta,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="color:#1f497d">Have you considered using a shadow mask and an evaporator? Substrate shape and topography could present a challenge, and some fixturing would be required, but no resist would be required and with a great enough
throw distance (on the order of 60cm+), your temperatures should stay cool enough to get the job done.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="color:#1f497d">Best,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:#1f497d"><br>
Carsen<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="color:#1f497d"><u></u> <u></u></span></p>
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<p class="MsoNormal"><b>From:</b> <a href="mailto:labnetwork-bounces@mtl.mit.edu" target="_blank">labnetwork-bounces@mtl.mit.edu</a> [mailto:<a href="mailto:labnetwork-bounces@mtl.mit.edu" target="_blank">labnetwork-bounces@mtl<wbr>.mit.edu</a>]
<b>On Behalf Of </b>Abelev, Esta<br>
<b>Sent:</b> Wednesday, January 24, 2018 11:57 AM<br>
<b>To:</b> <a href="mailto:labnetwork@mtl.mit.edu" target="_blank">labnetwork@mtl.mit.edu</a><br>
<b>Subject:</b> [labnetwork] Device on PDMS<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Dear All,<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">We have a group here that is interesting to make some gold electrodes on PDMS substrates.
<u></u><u></u></p>
<p class="MsoNormal">We found it is very challenging to bake the resist on PDMS dew to it temp. sensitivity (shrinks).<u></u><u></u></p>
<p class="MsoNormal">Can anyone advise us on how to do it, any tricks? <u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Thank you, Esta<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Atlanta",serif">-----------------------</span><u></u><u></u></p>
<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Atlanta",serif">Esta Abelev, PhD</span></b><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Atlanta",serif">Technical Director,<i> </i>Petersen Institute of NanoScience and Engineering </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Atlanta",serif">University of Pittsburgh | 3700 O’Hara Street | 636| Pittsburgh, PA 15261</span><u></u><u></u></p>
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