https://doi.org/10.1007/s100530170149
Sphere packing, helices and the polytope {3, 3, 5}
Dept. of Metallurgy, Indian Institute of Science, Bangalore 560 012, India
Corresponding author: a lord@metalrg.iisc.ernet.in
Received:
27
March
2001
Published online: 15 September 2001
The packing of tetrahedra in face contact is well-known to be relevant to atomic clustering in many complex alloys. We briefly review some of the structures that can arise in this way, and introduce methods of dealing with the geometry of the polytope {3,3,5}, which is highly relevant to an understanding of these structures. Finally, we present a method of projection from S3 to E3 that enables coordinates for the key vertices of the collagen model of Sadoc and Rivier to be calculated.
PACS: 36.40.-c – Atomic and molecular clusters / 87.15.-v – Biomolecules: structure and physical properties
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2001
