Volume 73, Number 3, February 2006
|Page(s)||450 - 456|
|Section||Interdisciplinary physics and related areas of science and technology|
|Published online||16 December 2005|
Strain-induced domain formation in two-dimensional colloidal systems
2. Physikalisches Institut, Universität Stuttgart - 70550 Stuttgart, Germany
2 Institut für Chemie, Karl-Franzens-Universität - 8010 Graz, Austria
3 Institute Josef Stefan - Jamova 39, SI-1000 Ljubljana, Slovenia
4 Instituto de Fisica, Universidad de Guanajuato - 37150 Leon, Mexico
Accepted: 30 November 2005
We report on the spontaneous formation of domains in colloidal monolayers subjected to a triangular substrate, the latter created by an optical interference pattern. Upon variation of the particle number density we observe a transition from a homogeneous phase to a network of pronounced domain structures. We demonstrate that this transition is driven by the elastic strain between the colloidal system and the underlying substrate.
PACS: 82.70.Dd – Colloids / 68.43.Hn – Structure of assemblies of adsorbates (two- and three-dimensional clustering) / 64.70.Rh – Commensurate-incommensurate transitions
© EDP Sciences, 2006
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