<div dir="ltr">These robots are apparently on the tens of micrometers (microns) - that is, thousands of nanometers - across.</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Sep 9, 2020 at 2:06 AM John Grigg via extropy-chat <<a href="mailto:extropy-chat@lists.extropy.org">extropy-chat@lists.extropy.org</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>"If I were to picture futuristic bots that could revolutionize both
microrobotics and medicine, a Pop-Tart with four squiggly legs would not
be on top of my list.
<p>I was so wrong.</p>
<p>Last week, Drs. Marc Miskin*, Itai Cohen, and Paul McEuen at Cornell University <a href="https://www.nature.com/articles/s41586-020-2626-9" target="_blank">spearheaded a collaboration</a>
that tackled one of the most pressing problems in microrobotics—getting
those robots to move in a controllable manner. They graced us with an
army of Pop-Tart-shaped microbots with seriously tricked-out actuators,
or motors that allow a robot to move. In this case, the actuators make
up the robot’s legs.</p>
<p>Each smaller than the width of a human hair, the bots have a blocky
body equipped with solar cells and two pairs of platinum legs, which can
be independently triggered to flex using precise laser zaps. The
control is so accurate that the team was able to simultaneously jigger
the legs of a battalion of microbots in a coordinated “march.”</p>
<p>If you’re not impressed yet, there’s more: unlike previous microbots
that relied on magnetism to move, these are basically miniaturized
robots. Like <a href="https://en.wikipedia.org/wiki/BigDog" target="_blank">BigDog</a>,
they have mechanical legs that are controlled with silicon-based
electronic components. This means that it’s possible to manufacture the
bots en masse using decades of nanofabrication experience, similar to
how we currently make <a href="https://singularityhub.com/2020/08/23/moores-law-lives-intel-says-chips-will-pack-50-times-more-transistors/" target="_blank">computer chips</a>.</p>
<p>Because the robots’ “brains” are conventional and based on classical
electronic circuits, it also means that they can be more easily
integrated with existing logic circuits to engineer even “smarter” next
generations that respond to more complex commands.</p>
<p>“[The authors] have used a fresh design concept for their microrobots,” <a href="https://www.nature.com/articles/d41586-020-02421-2" target="_blank">wrote</a>
Drs. Allan Brooks and Michael Strano at MIT in an accompanying piece of
the paper. “Because the actuators can be operated by the low-power
electric currents that typically flow through electronic circuits,
sensors and logic components could be seamlessly integrated with the
actuators …This opens the doors for the last 50 years of
micro-electronics research to be incorporated into <a href="https://singularityhub.com/tag/robotics/" target="_blank">robots</a> so small they can’t be seen by the human eye.”"</p><p>
</p><div><div><img src="cid:ii_kev5m8b10" alt="nano robo.jpg" width="236" height="300"><br></div><div>I look forward to hearing a comment about this development by Eric Drexler...<br></div></div><div><br></div><div><a href="https://singularityhub.com/2020/09/08/an-army-of-microscopic-robots-is-ready-to-patrol-your-body/" target="_blank">https://singularityhub.com/2020/09/08/an-army-of-microscopic-robots-is-ready-to-patrol-your-body/</a></div>
<p><br></p>
</div></div>
_______________________________________________<br>
extropy-chat mailing list<br>
<a href="mailto:extropy-chat@lists.extropy.org" target="_blank">extropy-chat@lists.extropy.org</a><br>
<a href="http://lists.extropy.org/mailman/listinfo.cgi/extropy-chat" rel="noreferrer" target="_blank">http://lists.extropy.org/mailman/listinfo.cgi/extropy-chat</a><br>
</blockquote></div>