High-efficiency optical transfer of torque to a nematic liquid crystal droplet

Juodkazis, Saulius; Matsuo, Shigeki; Murazawa, Naoki; Hasegawa, Ichiro; Misawa, Hiroaki
June 2003
Applied Physics Letters;6/30/2003, Vol. 82 Issue 26, p4657
Academic Journal
We report on the determination of the difference in the refractive index between the ordinary and extraordinary rays in droplets of nematic liquid crystal E-44 at the wavelength of laser trapping, 1064 nm. This difference was calculated by measuring the ellipticity of laser tweezers for the moment at which rotation of the trapped droplet starts. The precision of this determination of the refractive index difference is approximately 5×10[SUP-3]. Hydrophobic nematic liquid crystal E-44 formed 0.5-5-μm droplets when cast into D[SUB2]O. The efficiency of the transfer of light torque to the liquid crystal droplets was determined to be 70% for the no-slip-boundary condition.


Related Articles

  • Electrically tunable refractive index in the dark conglomerate phase of a bent-core liquid crystal. Nagaraj, M.; Görtz, V.; Goodby, J. W.; Gleeson, H. F. // Applied Physics Letters;1/13/2014, Vol. 104 Issue 2, p021903-1 

    Here we report an electrically tunable refractive index observed in an isotropic liquid crystal phase known as the dark conglomerate (DC) phase. This unusual change in the refractive index which has not been reported before in the DC phase of other bent-core liquid crystals occurs because of a...

  • Maxwell Stress Induced Flow-Deformation and Optical Nonlinearities in Liquid Crystals. Khoo, Iam C.; Shuo Zhao; Chun-Wei Chen; Tsung-Jui Ho // Progress in Electromagnetics Research;2015, Vol. 154, p51 

    We present a critical account of intense pulsed-laser field induced refractive index changes caused by flow, crystalline axis reorientation and distortion and other high order photonic processes in transparent liquid crystals. In particular, the optical nonlinearity associated with Maxwell...

  • Transient characteristics of self-phase modulation in liquid crystals. Ono, Hiroshi; Kikuhara, Junichi // Applied Physics Letters;6/5/2000, Vol. 76 Issue 23 

    Transient properties of nonlinear refractive index change originating in photothermal effects in guest-host liquid crystal (GHLC) have been characterized by use of heat-conduction analysis. By theoretical calculations using time-dependent heat-conduction analysis, we have a time constant of...

  • Dynamics of picosecond laser-induced density, temperature, and flow-reorientation effects in the mesophases of liquid crystals. Khoo, I. C.; Lindquist, R. G.; Michael, R. R.; Mansfield, R. J.; LoPresti, P. // Journal of Applied Physics;4/1/1991, Vol. 69 Issue 7, p3853 

    Focuses on a study which investigated the laser-induced density and temperature changes and flow-reorientation effects in the nematic and smectic phases of liquid crystals. Overview of how physical and optical parameters are involved in refractive-index grating formation; Experimental...

  • All-optical focal length converter using large optical nonlinearity in guest-host liquid crystals. Ono, Hiroshi; Harato, Yoshiro // Applied Physics Letters;6/6/1999, Vol. 74 Issue 23, p3429 

    Presents an all-optical focal length converter using both large optical nonlinearity and anisotropic complex refractive indices in guest-host rematic liquid crystals (GHLC). Generation of nonlinear phase modulation by irradiating the GHLC with a He-Ne laser beam having a Gaussian profile; Laser...

  • A semiempirical model for liquid-crystal refractive index dispersions. Wu, Shin-Tson // Journal of Applied Physics;2/15/1991, Vol. 69 Issue 4, p2080 

    Presents information on a study which developed a single-band model and a three-band model for understanding the refractive index dispersions of uniaxial liquid crystals (LC). Representations of electronic resonance wavelengths in the single-band model; Development of the three-band model;...

  • Complex photothermal refractive index change in host-guest liquid crystals determined with a.... Ono, Hiroshi; Kawatsuki, Nobuhiro // Applied Physics Letters;5/12/1997, Vol. 70 Issue 19, p2544 

    Examines the complex photothermal refractive index change in host-guest liquid crystals. Application of an interferometric method; Contributions of the real and imaginary parts to the photothermal effects in the host-guest liquid crystals; Characteristics of the liquid crystals.

  • Optical and Structural Anisotropy of a Uniaxial Nematic Consisting of Biaxial Molecules with Internal Rotation. Aver’yanov, E. M. // Optics & Spectroscopy;Dec2002, Vol. 93 Issue 6, p870 

    A relation is established between the refractive indices of a uniaxial nematic liquid crystal (LC) consisting of biaxial molecules with internal rotation and the properties of molecules and their structural ordering. It is shown that the correlation between the conformation degree of freedom...

  • High Birefringence Liquid Crystals Mixtures and Their Selected Applications. Raszewski, Zbigniew; Piecek, Wiktor; Jaroszewicz, Leszek; Nowinowski-Kruszelnicki, Edward; Perkowski, Pawel; Soms, Leonid; Dabrowski, Roman; Kedzierski, Jerzy; Olifierczuk, Marek; Mrukiewicz, Mateusz; Miszczyk, Emilia; Morawiak, Przemyslaw; Mazur, Rafal; Kowiorski, Krystian // Advanced Materials Research;2014, Issue 909, p12 

    High-Birefringence Nematic Liquid Crystals Mixtures (HBNLCM) recently developed in the Military University of Technology (Poland) are presented in this paper. Dielectric, refractometric, viscosimetric and elastomeric characteristic were determined. The properties are discussed in terms of their...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics