General up to next-nearest neighbour elasticity of triangular lattices in three dimensions
Soft Condensed Matter
2009-11-11 v1
Abstract
We establish the most general form of the discrete elasticity of a 2D triangular lattice embedded in three dimensions, taking into account up to next-nearest neighbour interactions. Besides crystalline system, this is relevant to biological physics (e.g., red blood cell cytoskeleton) and soft matter (e.g., percolating gels, etc.). In order to correctly impose the rotational invariance of the bulk terms, it turns out to be necessary to take into account explicitly the elasticity associated with the vertices located at the edges of the lattice. We find that some terms that were suspected in the litterature to violate rotational symmetry are in fact admissible
Keywords
Cite
@article{arxiv.cond-mat/0602494,
title = {General up to next-nearest neighbour elasticity of triangular lattices in three dimensions},
author = {Cyril Dubus and Ken Sekimoto and Jean-Baptiste Fournier},
journal= {arXiv preprint arXiv:cond-mat/0602494},
year = {2009}
}