TY - JOUR
T1 - Temperature and confinement effect on interparticle force in nematic colloids
AU - Kondo, Noboru
AU - Iwashita, Yasutaka
AU - Kimura, Yasuyuki
N1 - Funding Information:
This work supported by a Grant-in-Aid for Scientific Research on Priority Area ‘‘Soft Matter Physics’’ from MEXT, Japan. Y. K. and Y. I. were also supported by Grant-in-Aid for scientific Researches from JSPS.
PY - 2011
Y1 - 2011
N2 - 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.
AB - 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.
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U2 - 10.1080/15421406.2011.568880
DO - 10.1080/15421406.2011.568880
M3 - Article
AN - SCOPUS:79960678335
SN - 1542-1406
VL - 545
SP - 115/[1339]-122/[1346]
JO - Molecular Crystals and Liquid Crystals
JF - Molecular Crystals and Liquid Crystals
ER -