Temperature and confinement effect on interparticle force in nematic colloids

Noboru Kondo, Yasutaka Iwashita, Yasuyuki Kimura

Research output: Contribution to journalArticle

Abstract

We experimentally studied the interparticle force between two colloidal particles with point defects in a nematic liquid crystal. The force F at various temperatures was measured using optical tweezers and with a free release method. The effective elastic constant was evaluated from F using electrostatic analogy of nematic field. At respective temperatures, that is in good agreement with the splay constant obtained by dielectric measurement. The dependence of F on cell thicknesses was also studied in a wedge-type cell. In a thinner cell, the magnitude of F becomes smaller, and F becomes short-ranged.

Original languageEnglish
Pages (from-to)115-122
Number of pages8
JournalMolecular Crystals and Liquid Crystals
Volume545
DOIs
Publication statusPublished - Jul 28 2011

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Colloids
temperature effects
colloids
Optical tweezers
Nematic liquid crystals
Elastic constants
Point defects
cells
wedges
point defects
Electrostatics
elastic properties
liquid crystals
Cells
electrostatics
Temperature
temperature

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Science(all)

Cite this

Temperature and confinement effect on interparticle force in nematic colloids. / Kondo, Noboru; Iwashita, Yasutaka; Kimura, Yasuyuki.

In: Molecular Crystals and Liquid Crystals, Vol. 545, 28.07.2011, p. 115-122.

Research output: Contribution to journalArticle

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