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<div class="moz-text-html" lang="x-western"> <tt>Dear
all, </tt><br>
<br>
<tt> welcome to this semester's first physics
colloquium, </tt> <br>
<br>
<tt> TODAY 16 Sept, at 10:15 in FYS1
Speaker:**Pekka Koskinen, JYFL*** </tt> <br>
<tt> Title: **</tt><strong></strong><tt>*</tt><strong></strong><tt> </tt><strong></strong><strong>The
Flimsiest Materials in the World</strong><tt> ****</tt>
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Abstract:</tt> <br>
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<p>Materials made from the atom-thick honeycomb
carbon -- graphene flakes, carbon nanotubes and
graphene nanoribbons -- are the flimsiest
materials in the world. Being sensitive to tiny
perturbations, they readily get bent, twisted,
rippled, curled, wrapped or otherwise distorted in
complex ways -- sometimes even spontaneously. In
this presentation I discuss problems related to
distortion simulations and introduce an approach
to resolve them, the revised periodic boundary
conditions. I illustrate related distortion
simulations by bent carbon nanotubes, spherically
distorted graphene, and twisted graphene
nanoribbons -- the last one possibly opening an
unprecedented route for carbon nanotube synthesis.</p>
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Best regards,<br>
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<p class="MsoNormal" style="text-align: justify;">Kari
Eskola and Ilari Maasilta </p>
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