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Dear colleagues,<br>
<br>
When we started the cleanroom at UDel we worked with CEE to develop
a developing station based on their spinners. It was a lot cheaper
than the figure Yong mentioned. It has sat largely unused because
the vast majority of our users work with small pieces.
<pre class="moz-signature" cols="72">iulian Codreanu, Ph.D.
Director, Nanofabrication Facility
University of Delaware
Harker ISE Lab, Room 163
221 Academy Street
Newark, DE 19716
302-831-2784
<a class="moz-txt-link-freetext" href="https://udnf.udel.edu">https://udnf.udel.edu</a></pre>
<br>
<div class="moz-cite-prefix">On 4/15/2026 4:44 PM, Sun, Yong wrote:<br>
</div>
<blockquote type="cite"
cite="mid:BL0PR08MB46746B38D5142E2D87F8ED22E8222@BL0PR08MB4674.namprd08.prod.outlook.com">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<div>Hi Kurt,</div>
<div><br>
</div>
<div>I would add a few points here following Garry’s excellent
advice:</div>
<div>(1). CNF had the luxury of acquiring the robust Auto Spin
Develop systems, which were designed for production. If you
don’t have the big budget (>>$100k per system), a cheaper
auto spin develop system can add a lot more maintenance work for
the tool manager. This is the common drawback of a cheap auto
spin develop systems not mentioned in Garry’s post.</div>
<div>(2). If you have a lot more users working with small chips,
the benefit of an auto spin develop system is also not obvious,
as users have to use a carrier wafer every time, which can be
painful to prepare.</div>
<div>(3) The advantages of an auto spin develop system will only
shine when most of your users do the majority of their
fabrication on standard size wafers (e.g. 4”, 6” or 8”).
Comparing to manual developing procedures, the consistency of
the auto spin develop system is simply amazing.</div>
<div
style="font-family: inherit; font-size: inherit; color: inherit; background-color: transparent;">
<br>
</div>
<div
style="font-family: inherit; font-size: inherit; color: inherit; background-color: transparent;">
For advanced lithography using steppers, it’s also recommended
that the cleanroom facility should be equipped with some
automated systems, such as the auto spin develop system, auto
spin rinse system, auto spin etch system…etc. When throughput,
consistency, uniformity are required for your applications, such
automated systems will deliver the magic.</div>
<div
style="font-family: inherit; font-size: inherit; color: inherit; background-color: transparent;">
<br>
</div>
<div
style="font-family: inherit; font-size: inherit; color: inherit; background-color: transparent;">
Best,</div>
<div
style="font-family: inherit; font-size: inherit; color: inherit; background-color: transparent;">
Yong Sun</div>
<br>
<hr style="display:inline-block;width:98%" tabindex="-1">
<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif"
style="font-size:11pt" color="#000000"><b>From:</b> labnetwork
<a class="moz-txt-link-rfc2396E" href="mailto:labnetwork-bounces@mtl.mit.edu"><labnetwork-bounces@mtl.mit.edu></a> on behalf of Garry J.
Bordonaro <a class="moz-txt-link-rfc2396E" href="mailto:bordonaro@cnf.cornell.edu"><bordonaro@cnf.cornell.edu></a><br>
<b>Sent:</b> Wednesday, April 15, 2026 11:37 AM<br>
<b>To:</b> 'Kurt Kupcho' <a class="moz-txt-link-rfc2396E" href="mailto:kurt.kupcho@wisc.edu"><kurt.kupcho@wisc.edu></a>;
<a class="moz-txt-link-abbreviated" href="mailto:labnetwork@mtl.mit.edu">labnetwork@mtl.mit.edu</a> <a class="moz-txt-link-rfc2396E" href="mailto:labnetwork@mtl.mit.edu"><labnetwork@mtl.mit.edu></a><br>
<b>Subject:</b> Re: [labnetwork] litho spin developer</font>
<div> </div>
</div>
<div lang="EN-US">
<div class="x_WordSection1">
<p class="x_MsoNormal"><span
style="font-size:11.0pt; font-family:"Calibri",sans-serif">Kurt,</span></p>
<p class="x_MsoNormal"><span
style="font-size:11.0pt; font-family:"Calibri",sans-serif"> </span></p>
<p class="x_MsoNormal"><span
style="font-size:11.0pt; font-family:"Calibri",sans-serif">We
have been using automated developers for over 20 years.
The advantages are *<b>reproducibility</b>*, reduced
chemical usage, reduced glassware usage.
</span></p>
<p class="x_MsoNormal"><span
style="font-size:11.0pt; font-family:"Calibri",sans-serif"> </span></p>
<p class="x_MsoNormal"><span
style="font-size:11.0pt; font-family:"Calibri",sans-serif">The
only disadvantage for us is maintenance, although that is
generally quite low. You may have issues with chemical
disposal depending on your local rules and the particular
equipment you use. Piece work can be done with some
effort and special chucks.</span></p>
<p class="x_MsoNormal"><span
style="font-size:11.0pt; font-family:"Calibri",sans-serif"> </span></p>
<p class="x_MsoNormal"><span
style="font-size:11.0pt; font-family:"Calibri",sans-serif">Users
like them as they get better and more consistent results,
and do not have to deal with pouring chemicals and
glassware.</span></p>
<p class="x_MsoNormal"><span
style="font-size:11.0pt; font-family:"Calibri",sans-serif"> </span></p>
<p class="x_MsoNormal"><span
style="font-size:11.0pt; font-family:"Calibri",sans-serif">The
tools can be expensive. We got ours during the 2000
bubble crash auctions.</span></p>
<p class="x_MsoNormal"><span
style="font-size:11.0pt; font-family:"Calibri",sans-serif"> </span></p>
<p class="x_MsoNormal"><span
style="font-size:11.0pt; font-family:"Calibri",sans-serif"> </span></p>
<div>
<p class="x_MsoNormal"><span
style="font-size:11.0pt; font-family:"Calibri",sans-serif">Garry
J. Bordonaro</span></p>
<p class="x_MsoNormal"><span
style="font-size:11.0pt; font-family:"Calibri",sans-serif">Microlithographic
Engineer</span></p>
<p class="x_MsoNormal"><span
style="font-size:11.0pt; font-family:"Calibri",sans-serif">Cornell
NanoScale Facility</span></p>
<p class="x_MsoNormal"><span
style="font-size:11.0pt; font-family:"Calibri",sans-serif">250
Duffield Hall</span></p>
<p class="x_MsoNormal"><span
style="font-size:11.0pt; font-family:"Calibri",sans-serif">343
Campus Road</span></p>
<p class="x_MsoNormal"><span
style="font-size:11.0pt; font-family:"Calibri",sans-serif">Ithaca
NY 14853-2700</span></p>
<p class="x_MsoNormal"><span
style="font-size:11.0pt; font-family:"Calibri",sans-serif">(607)
254-4936</span></p>
<p class="x_MsoNormal"><span
style="font-size:11.0pt; font-family:"Calibri",sans-serif"><a
href="mailto:bordonaro@cnf.cornell.edu"
target="_blank" moz-do-not-send="true"><span
style="color:blue">bordonaro@cnf.cornell.edu</span></a></span></p>
<p class="x_MsoNormal"><span
style="font-size:11.0pt; font-family:"Calibri",sans-serif"><a
href="http://www.cnf.cornell.edu/"
data-auth="NotApplicable" target="_blank"
moz-do-not-send="true"><span style="color:blue">http://www.cnf.cornell.edu/</span></a></span></p>
<p class="x_MsoNormal"><span
style="font-size:11.0pt; font-family:"Calibri",sans-serif"> </span></p>
<p class="x_MsoNormal"><span
style="font-size:11.0pt; font-family:"Calibri",sans-serif">Please
acknowledge CNF in your publications:</span></p>
<p class="x_MsoNormal"><span
style="font-size:11.0pt; font-family:"Calibri",sans-serif">"This
work was performed in part at the Cornell NanoScale
Science & Technology Facility (CNF), a member of the
National Nanotechnology Coordinated Infrastructure
(NNCI), which is supported by the National Science
Foundation (Grant NNCI-2025233)."</span></p>
<p class="x_MsoNormal"><span
style="font-size:11.0pt; font-family:"Calibri",sans-serif"> </span></p>
<p class="x_MsoNormal"><span
style="font-size:11.0pt; font-family:"Calibri",sans-serif"> </span></p>
<p class="x_MsoNormal"><span
style="font-size:11.0pt; font-family:"Calibri",sans-serif"> </span></p>
</div>
<p class="x_MsoNormal"><span
style="font-size:11.0pt; font-family:"Calibri",sans-serif"> </span></p>
<div>
<div
style="border:none; border-top:solid #E1E1E1 1.0pt; padding:3.0pt 0in 0in 0in">
<p class="x_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 <a class="moz-txt-link-rfc2396E" href="mailto:labnetwork-bounces@mtl.mit.edu"><labnetwork-bounces@mtl.mit.edu></a>
<b>On Behalf Of </b>Kurt Kupcho<br>
<b>Sent:</b> Tuesday, April 14, 2026 10:25 AM<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] litho spin developer</span></p>
</div>
</div>
<p class="x_MsoNormal"> </p>
<p class="x_MsoNormal"><span style="font-size:11.0pt">Hi all</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt">I was
wondering who out there has litho spin developers vs.
doing litho development manually with dishes.
</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt">Do you
users/students like the spin developer?</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt">Advantages
and disadvantages of the spin developer?</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt">Any
opinions and guidance would be much appreciated!</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt">Thank
you</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt">Kurt</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt"> </span></p>
<div
style="border:none; border-bottom:dotted windowtext 3.0pt; padding:0in 0in 1.0pt 0in">
<p class="x_MsoNormal"><span style="font-size:11.0pt"> </span></p>
</div>
<p class="x_MsoNormal"><span style="font-size:11.0pt">Kurt
Kupcho</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt">Materials
Science Engineer</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt">Nanoscale
Fabrication Center (NFC)</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt">University
of Wisconsin</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt">1550
Engineering Dr.</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt">ECB 3110</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt">Madison,
WI 53706</span></p>
<p class="x_MsoNormal"><span lang="ES"
style="font-size:11.0pt">E: </span><span
style="font-size:11.0pt"><a
href="mailto:kurt.kupcho@wisc.edu" target="_blank"
moz-do-not-send="true"><span lang="ES">kurt.kupcho@wisc.edu</span></a></span><span
lang="ES" style="font-size:11.0pt"></span></p>
<p class="x_MsoNormal"><span lang="ES"
style="font-size:11.0pt">T: 608-262-2982</span></p>
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