Chia-Chin Tsoo & Bih-Yaw Jin

Research Fellow & Professor
National Center for High-Performance Computing, National Applied Research Laboratories, Hsinchu, Taiwan & Department of Chemistry, National Taiwan University, Taipei, Taiwan
We apply the traditional beading technique to the construction of physical models of nanoscale inorganic compounds consisting of ions arranged periodically in minerals and to the construction of other non-molecular crystalline solids. The spatial arrangements of these systems consist of a regular arrangement of anions around a central cation (or vise versa) described as coordination polyhedra, which are larger building blocks than individual atoms. Starting from a few coordination polyhedra such as regular tetrahedra and octahedra, a wide range of aesthetically pleasing skeletal sculptures inspired by inorganic solids can be built by using the standard angle weave technique and tubular bugle beads.
Skeletal model of hexagonal close packing lattice structures
14 x 14 x 14 cm
3cm Glass bugle beads
2014
The lattice structure with the hexagonal close packed (hcp) arrangement is closely related to the fcc octet-truss. However, unlike the ABC type of stacking sequence in fcc systems, the hcp arrangement has ABAB stacking. The bugle bead model presented represents a finite skeletal structure according to the hexagonal close packing and consists of a central smaller anticuboctahedron (red bugle beads) and an outer layer of frequency-two anticuboctahedron (blue bugle beads).
Skeletal model of cubic close packing lattice structures
14 x 14 x 14 cm
3cm Glass bugle beads
2014
An octet-truss lattice structure with the face centered cubic crystal symmetry is a truss-like space frame based on the stacking of tetrahedra and octahedra in a ratio of 2:1. The concept of octet-truss was first discovered by Buckminster Fuller, who conceived of the famous soccer ball molecules or fullerenes, structures known as the geodesic dome. The octet-truss space frame is strong and lightweight because of the inherent rigidity of their fundamental building motifs.