Confinement Effect on Interparticle Potential in Nematic Colloids
- 4 December 2008
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 101 (23), 237801
- https://doi.org/10.1103/physrevlett.101.237801
Abstract
We studied the confinement effect on the interaction force in nematic liquid crystal colloids with spherical particles inducing planar anchoring. Using magneto-optical tweezers, we measured the spatial dependence of the quadrupolar structural interparticle force over 4 orders of magnitude. For small separations, the interparticle potential follows the power law, whereas for separations larger than the sample thickness, it decreases exponentially with the decay length proportional to the sample thickness. Experimental results are reproduced by using the Landau–de Gennes free-energy minimization approach.Keywords
This publication has 31 references indexed in Scilit:
- Two-dimensional dipolar nematic colloidal crystalsPhysical Review E, 2007
- Coexistence of Two Colloidal Crystals at the Nematic-Liquid-Crystal–Air InterfacePhysical Review Letters, 2007
- Two-Dimensional Nematic Colloidal Crystals Self-Assembled by Topological DefectsScience, 2006
- Ordered Droplet Structures at the Liquid Crystal Surface and Elastic-Capillary Colloidal InteractionsPhysical Review Letters, 2004
- Defect Structure around Two Colloids in a Liquid CrystalPhysical Review Letters, 2003
- Physics of colloidal dispersions in nematic liquid crystalsPhysics Reports, 2001
- Colloidal ordering from phase separation in a liquid- crystalline continuous phaseNature, 2000
- Colloid–liquid-crystal composites: An unusual soft solidPhysical Review E, 2000
- Novel Colloidal Interactions in Anisotropic FluidsScience, 1997
- Director structure around a colloid particle suspended in a nematic liquid crystalPhysical Review E, 1996