Home List of Titles Statics and dynamics of radial nematic liquid-crystal droplets manipulated by laser tweezers
Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/193652
- Statics and dynamics of radial nematic liquid-crystal droplets manipulated by laser tweezers
- Brasselet, Etienne; Murazawa, Naoki; Juodkazis, Saulius; Misawa, Hiroaki
- Laser manipulation of trapped radial 4′-n-pentyl-4-cyanobiphenyl (5CB) nematic liquid-crystal droplets induced by molecular reordering is presented. We show experimentally that optical tweezers having linear, elliptical, or circular polarization can break the radial symmetry of the initial molecular organization inside a radial nematic droplet. Static distorted or twisted deformation modes and steady or unsteady nonlinear rotational dynamics are observed. Statics results are analyzed in terms of light-induced radial or left-right symmetry breaking effects associated with optical reorientation. The dynamical observations are compared with simulations from a slab analog model, for which orientational processes driven by optical nonlinearities can be accurately described. This study confirms that light-induced bulk reordering is an essential ingredient towards the understanding of the behavior of radial nematic liquid-crystal droplets in laser tweezers, as suggested by previous studies.
- Publication type
- Journal article
- Physical Review E: Statistical, Nonlinear, and Soft Matter Physics, Vol. 77, no. 4 (Apr 2008), article no. 041704
- Publication year
- FOR Code(s)
- 01 Mathematical Sciences; 02 Physical Sciences; 09 Engineering
- Laser manipulation; Laser tweezers; Liquid-crystal droplets; Optical tweezers; Reordering
- American Physical Society
- Publisher URL
- Copyright © 2008 The American Physical Society.
- Peer reviewed