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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">There's a link on my homepage about an article (from The Columbus<br>
Dispatch) about geckos and why their feet are "sticky" and they can<br>
climb on walls. It has to do with van der Waals attractive forces.<br>
These are London Forces and Dipole-Dipole AF. In this case, largely<br>
(if not entirely) LF. Amazing, something you've learned about is actually<br>
applicable in your everyday life. Well, at least if you are a gecko or<br>
want to climb on walls like one. Someday that may just be possible.<br>
They are now developing adhesives that mimic the little hairs on the<br>
geckos feet that allow it to cling to walls. These adhesives and tapes<br>
will be reusable.<br>
<br>
You will find the link toward the bottom of my homepage and I've<br>
included it here,<br>
<br>
<a href="https://www.asc.ohio-state.edu/zellmer.1/gecko.pdf">https://www.asc.ohio-state.edu/zellmer.1/gecko.pdf</a><br>
<br>
A group at the University of Akron (among other places) has developed<br>
a tape that works w/o any glue by mimicking how a gecko's foot works.<br>
The home page is<br>
<br>
<a href="http://blogs.uakron.edu/dhinojwala/biomimetics/">http://blogs.uakron.edu/dhinojwala/biomimetics/</a><br>
<br>
<a href="http://www.uakron.edu/im/online-newsroom/news_details.dot?newsId=bdeffc93-3f0c-470b-be04-da96ff892271&crumbTitle=Gecko%20feet%20hold%20clues%20to%20creating%20bandages%20that%20stick%20when%20wet">Gecko feet hold clues to creating bandages that stick
when wet</a><br>
<br>
There is a product called Geckskin developed at UMass that uses the same van der Waal force
<br>
principals. A 3x5 notecard sized piece of the material can hold a 700 lb. block of metal to glass.
<br>
The link is below. <br>
<br>
<a href="https://geckskin.umass.edu/">https://geckskin.umass.edu/</a> <br>
<br>
Dr. Zellmer <o:p></o:p></span></p>
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