论文信息 - Orientational Ratchets and Angular Momentum Balance in the Janossy Effect

Orientational Ratchets and Angular Momentum Balance in the Janossy Effect

Abstract In the Janossy effect, the threshold intensity for the optical Freedericksz transition in nematic liquid crystals is dramatically reduced by the addition of a small amount of dichroic dye to the sample. We examine the source of torques in the system and the balance of angular momentum. We show that, due to the presence of the dye, the system is an optically pumped orientational ratchet.

E Weinan | Peter Palffy-Muhoray

[1] E. M. Lifshitz,et al. Electrodynamics of continuous media , 1961 .

[2] J. Kong. Electromagnetic Wave Theory , 1986 .

[3] Nelson V. Tabiryan,et al. Orientational Optical Nonlinearity of Liquid Crystals , 1986 .

[4] Bier,et al. Fluctuation driven ratchets: Molecular motors. , 1994, Physical review letters.

[5] Prost,et al. Asymmetric pumping of particles. , 1994, Physical review letters.

[6] R. Astumian. Thermodynamics and kinetics of a Brownian motor. , 1997, Science.

[7] Iver Brevik,et al. Experiments in phenomenological electrodynamics and the electromagnetic energy-momentum tensor , 1979 .

[8] Brian S. Wherrett,et al. Anomalous optical Freedericksz transition in an absorbing liquid crystal , 1990 .

[9] Kaplan,et al. Optical thermal ratchet. , 1995, Physical review letters.

[10] Lorenzo Marrucci,et al. PHOTOINDUCED MOLECULAR REORIENTATION OF ABSORBING LIQUID CRYSTALS , 1997 .

[11] I. Jánossy,et al. Influence of anthraquinone dyes on optical reorientation of nematic liquid crystals. , 1992, Optics letters.

[12] Jánossy. Molecular interpretation of the absorption-induced optical reorientation of nematic liquid crystals. , 1994, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics.