D_{3d} T252 & T600

I found an interesting case of TCNT while playing with the newly written Matlab code...

D_{3d} T252


& T600



They are like puncturing a hole through an octahedral fullerene...

D_{3h} T240

Unlike the TCNTs we constructed before, this one is obtained by extending the edges of one Schwartz-H graphenoid unit cell. In other hand, it can be realized as retracting three nonadjacent "arms" of the normal type D_{6h} TCNT 'till twelve pairs of 5/7-gons meet and merge into six pairs of 4/8-gons...

Helix

Chuang created this beautiful helix. Click on the following figure to see the helix roughly in its original size.

T240 & C140

The aspect ratio of T240 (12mm) in previous post seems to be too large. My scanner probably has some problem to generate correct aspect ratio for large objects. So I just manually adjust it with the Illustrator.

一種碳環，兩種大小

T240 with 12mm and 4mm beads respectively.

The Three Canonical TPMS and Their Graphenoid Representations