Genus-2 fullerene with local hexagonal symmetry

Chuang recently made this beaded molecule which is basically consisted of two rings fused together along their common C2 rotational axes. In the inner side of this molecule, Chuang used octagons to create negative curvatures. According to the Euler theorem, in the outer region with positive Gaussian curvature, one has to use the same number of squares for a simple torus. But here the two squares located the connected region has to be fused into an octagon in order to simulate the negative curvature in that region.
So here we need an extra two octagons in the outer side of this molecule.

Sculpture of C60 at Chem. Dept. of TKU

青城山上的 cuboctahedron

I found this cuboctahedron in a walking trail of the QingCheng mountain:

Here is the beaded cuboctahedron I made a long time ago. 青城山上清宮老蔣題的匾額： From 青城山

From 青城山

樂山大佛

上個星期到成都開兩岸理論化學會議，順道去了樂山的大佛。

From 樂山大佛

A mini workshop for beading

This was a mini-workshop held in winter vacation for students who took my course on general chemistry. I also asked Chern Chuang to teach them how to weave a toroidal carbon nanotubes. Chuang had made some beautiful slides for the students to follow step by step.

From 2009 Spring

More beaded models

From 2009 Spring