Polarization and droplet size effects in the laser-trapping-induced reconfiguration in individual nematic liquid crystal microdroplets

Anwar Usman*, Wei Yi Chiang, Takayuki Uwada, Hiroshi Masuhara

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We experimentally demonstrate reordering throughout the inside of an individual bipolar nematic liquid-crystalline microdroplet optically trapped by a highly focused laser beam, when the laser powers are above a definite threshold. The threshold depends on the droplet size and laser polarization. A physical interpretation of the results is presented by considering the nonlocal orientations of the nematic liquid-crystal molecules in the droplets with the dimensions on the order of the focal spot diameter or larger. On the basis of the finite size approximation, we show that the dependence of threshold power on the droplet size is calculated to be in qualitative agreement with the experimental data.

Original languageEnglish
Pages (from-to)4536-4540
Number of pages5
JournalJournal of Physical Chemistry B
Volume117
Issue number16
DOIs
StatePublished - 25 Apr 2013

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