Soliton Staircases and Standing Strain Waves in Confined Colloidal Crystals

Details Soliton Staircases and Standing Strain Waves in Confined Colloidal Crystals Soliton Staircases and Standing Strain Waves in Confined Colloidal Crystals

2009-12-07

arxiv.org/abs/0912.1161v1

EPL, 83 (2008) 58004

Physics

Condensed Matter

Soft Condensed Matter

22 pages, 5 figures

Scientific paper

We show by computer simulation of a two-dimensional crystal confined by corrugated walls that confinement can be used to impose a controllable mesoscopic superstructure of predominantly mechanical elastic character. Due to an interplay of the particle density of the system and the width D of the confining channel, "soliton staircases" can be created along both parallel confining boundaries, that give rise to standing strain waves in the entire crystal. The periodicity of these waves is of the same order as D. This mechanism should be useful for structure formation in the self-assembly of various nanoscopic materials.

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