Temperature and confinement effect on interparticle force in nematic colloids

Noboru Kondo, Yasutaka Iwashita, Yasuyuki Kimura

Research output: Contribution to journalArticlepeer-review


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/[1339]-122/[1346]
JournalMolecular Crystals and Liquid Crystals
Publication statusPublished - 2011

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics


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