Confinement effect on interparticle potential in nematic colloids.

Confinement effect on interparticle potential in nematic colloids.

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...

Szczegółowa specyfikacja

Opis bibliograficzny
Główni autorzy: Vilfan, M, Osterman, N, Copic, M, Ravnik, M, Zumer, S, Kotar, J, Babic, D, Poberaj, I
Format: Journal article
Język:English
Wydane: 2008
Opis
Streszczenie: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.

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