<div dir="ltr"><div dir="ltr">Hi Fubo,<div>Do you know what materials the coating/contamination are? <br><div>I have never run into this, but as someone from chemistry background, I'd like to say that on the chemistry aspect, gold is a very stable material - so if you can have a rough idea of what's the contamination material, you have pretty high chance to be able to find a (combination of) wet chemical etchant that etch away the surface contamination while don't affect the gold.</div></div><div>Hope this helps.</div><div><br></div><div>Best</div><div>Houpu</div><div><br></div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Fri, May 9, 2025 at 4:38 PM Fubo Rao <<a href="mailto:furao@ucsd.edu">furao@ucsd.edu</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 dir="ltr"><div dir="ltr"><div>Dear Colleagues,</div><div><br></div><div>What would you recommend for cleaning this Au sputter target that has been partially coated/contaminated with other materials? There are probably a few material coatings on the target, before this was found out. Sputtering the materials off, or sand blasting will waste a lot of gold. Thanks in advance.</div><div><br></div><div><img src="cid:ii_mahdz8il0" alt="image.png" width="364" height="383"><br></div><div><div dir="ltr" class="gmail_signature"><div dir="ltr"><div style="color:rgb(0,0,0);font-family:Helvetica;font-size:14px"><br></div><div style="color:rgb(0,0,0);font-family:Helvetica;font-size:14px">Thanks,</div><div style="color:rgb(0,0,0);font-family:Helvetica;font-size:14px"><br></div><div style="color:rgb(0,0,0);font-family:Helvetica;font-size:14px">Fubo Rao, Ph.D.,</div><div style="color:rgb(0,0,0);font-family:Helvetica;font-size:14px">Nano3 Technical Director,<br></div><div style="color:rgb(0,0,0);font-family:Helvetica;font-size:14px">Qualcomm Institute/Atkinson Hall,</div><div style="color:rgb(0,0,0);font-family:Helvetica;font-size:14px">UC San Diego<br>9500 Gilman Drive #0436<br>La Jolla, CA 92093-0436</div><div style="color:rgb(0,0,0);font-family:Helvetica;font-size:14px">Tel. (858)534-4518</div><div style="color:rgb(0,0,0);font-family:Helvetica;font-size:14px">Cell: (858)375-9190</div><div style="color:rgb(0,0,0);font-family:Helvetica;font-size:14px">E-mail: <a href="mailto:furao@ucsd.edu" style="color:rgb(17,85,204)" target="_blank">furao@ucsd.edu</a></div><div><font color="#000000" face="Helvetica"><span style="font-size:14px"><a href="https://nanofab.ucsd.edu/" target="_blank">https://nanofab.ucsd.edu/</a></span></font></div><div><font face="Helvetica" size="4" color="#00ff00"><a href="https://nanofab.ucsd.edu/about/" style="background-color:rgb(0,255,0)" target="_blank">About Nano3</a></font></div><div><font color="#000000" face="Helvetica"><a href="https://www.linkedin.com/company/ucsd-nano3-shared-research-facility/" target="_blank"><img src="https://ci3.googleusercontent.com/mail-sig/AIorK4zh1HPuORTDkboG98tWzyEUQOzhjyfga7tbJQPc8W3MHG-IJOX0fdynFzMytim3__psBT-N23H59iOa" alt="https://www.linkedin.com/company/ucsd-nano3-shared-research-facility/"></a><br></font></div></div></div></div></div>
</div>
_______________________________________________<br>
labnetwork mailing list<br>
<a href="mailto:labnetwork@mtl.mit.edu" target="_blank">labnetwork@mtl.mit.edu</a><br>
<a href="https://mtl.mit.edu/mailman/listinfo.cgi/labnetwork" rel="noreferrer" target="_blank">https://mtl.mit.edu/mailman/listinfo.cgi/labnetwork</a><br>
</blockquote></div><div><br clear="all"></div><div><br></div><span class="gmail_signature_prefix">--</span><div dir="ltr" class="gmail_signature"><div dir="ltr"><div>Houpu Li, Ph.D.<br>Research and Development Engineer<br>Lab Manager, AMCaT Laboratory<br>Department of Materials Science and Engineering<br>UC Davis College of Engineering<br>office phone : +1(530)752-0284<br>email: <a href="mailto:houli@ucdavis.edu">houli@ucdavis.edu</a></div><div><br style="color:rgb(34,34,34)"></div></div></div></div>