Castle(0.2 mm x 0.3 mm x 0.4 mm)<sup id="cite_ref-TuWien_1-0" class="reference"><a href="#cite_note-TuWien-1">[1]</a></sup><a href="https://en.wikipedia.org/wiki/3D_printing" class="extiw" title="en:3D printing">3D-printed</a> on a <a href="https://en.wikipedia.org/wiki/pencil" class="extiw" title="en:pencil">pencil</a> tip via <a href="https://en.wikipedia.org/wiki/multiphoton_lithography" class="extiw" title="en:multiphoton lithography">multiphoton lithography (MPL)</a>. Video of 3D-print: <a rel="nofollow" class="external free" href="https://www.youtube.com/watch?v=mdup3w7DCZE">https://www.youtube.com/watch?v=mdup3w7DCZE</a>
<a href="//commons.wikimedia.org/w/index.php?title=User:GruberPeter&amp;action=edit&amp;redlink=1" class="new" title="User:GruberPeter (page does not exist)">Peter Gruber</a>
CC BY 4.0
<span class="int-own-work" lang="en">Own work</span>