Tetrahelices - two bead models of Boerdijk–Coxeter helix

There is a helical tower based on the Boerdijk–Coxeter helix in Mito-shi, Ibaraki-ken, Japan:

Art Tower MIT

So, during my visit to Nagoya this May, I made several tetrahelices as souvenirs for my friends there. Since I brought many tubular beads with different colors to choose from, so I decided to use different color for three helical edges in each tetrahelix. In total, there should be four possible arrangements or two enantiomer pairs. But I only made two of them shown in the following picture. After I made these two tetrahelices, so many people also like to have this model, so I made two more tetrahelices before I left Japan.

A few photos from workshop in the Nagoya City University

During my visit to Japan this May, Prof. Sonoda and Horibe kindly arranged a special workshop in the Nagoya City University on May 10, 2014. Here are a few photos from the workshop which connecting the Sangaku problems and mathematica beading.

In addition to this workshop, Horibe and I will also give a similar workshop in the Bridges meeting (Seoul) this year.

High-Genus Fullerene

Sierpinski tetrahedron & Mackay icosahedron for the Bridges Seoul 2014

Dr. Tsoo and I have also submitted two beadworks for the mathart exhibition in the Bridges Seoul 2014, which can be found here: tubular bead structures.

Trefoil knot for the Bridges Seoul 2014

Chern submitted an artwork of trefoil knot for the Bridges Seoul 2014, which can be found at this page: Carbon nanotube trefoil knot C318.

C60 and T120 with 5mm cateye stones

It's been a while since I made T120 and C60 sometime ago. Also, I have given away all other cateye T120 models made by Chern many years ago. Hopefully, I can show more models with this kind of beads in the future.