Jump to main content
Jump to site search

Issue 4, 2011
Previous Article Next Article

Phase behavior of colloidal monolayers in quasiperiodic light fields

Author affiliations

Abstract

We experimentally investigate the phase behavior of a dense two-dimensional system of interacting colloidal particles subjected to a decagonal quasiperiodic potential landscape created by the interference of five laser beams. Upon increasing the intensity I0 of the laser field, we observe the initial triangular crystal to change into a quasicrystal via a two-step process. To characterize this transition, we apply an algorithm that describes the resulting structures in terms of a polygonal tiling comprised of triangular, square and pentagonal tiles. First, square tiles develop at the expense of triangular tiles and assemble into bands. Only at higher laser intensities, pentagonal tiles, which reflect the decagonal quasiperiodic ordering, occur. For certain particle densities, an Archimedean-like tiling occurs where the bands of square extend across the entire system. We demonstrate how the alignment of these bands can be related to phasonic strain fields in the laser pattern.

Graphical abstract: Phase behavior of colloidal monolayers in quasiperiodic light fields

Back to tab navigation

Article information


Submitted
08 Jun 2010
Accepted
26 Jul 2010
First published
02 Sep 2010

Soft Matter, 2011,7, 1352-1357
Article type
Paper

Phase behavior of colloidal monolayers in quasiperiodic light fields

J. Mikhael, G. Gera, T. Bohlein and C. Bechinger, Soft Matter, 2011, 7, 1352
DOI: 10.1039/C0SM00486C

Social activity

Search articles by author

Spotlight

Advertisements