Rheology measurement at liquid-crystal water interface using laser tweezers

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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/155914

Title: Rheology measurement at liquid-crystal water interface using laser tweezers
Author(s): Murazawa, Naoki; Juodkazis, Saulius; Tanamura, Yoshihiko; Misawa, Hiroaki
Abstract: We demonstrated that viscosity measurement using a spinning laser-trapped microsphere depends on the hydrophobicity or hydrophylicity of a spherical material. Reduction in viscous drag was observed in hydrophobic liquid crystal droplets. Rheology on a liquid crystal surface with D2O was demonstrated by spinning and stopping a laser tweezed droplet. The importance of nonslipping boundary conditions in viscosity measurements is discussed.
Publication type: Journal article
Source: Japanese Journal of Applied Physics, Vol. 45, no. 2A (2006), pp. 977-982
Publication year: 2006
FOR Code(s): 01 Mathematical Sciences; 02 Physical Sciences
Keyword(s): Liquid crystals; Optical materials; Optical methods; Optical trapping; Rheological measurements; Rheometry; Rheooptics; Viscosity measurements
Publisher: Japan Society of Applied Physics
ISSN: 0021-4922
Publisher URL: http://dx.doi.org/10.1143/jjap.45.977
Peer reviewed