Electric field induced biaxiality and the electro-optic effect in a bent-core nematic liquid crystal | Zendy

Mamatha Nagaraj | Zendy; Yu. P. Panarin | Zendy; Uttam Manna | Zendy; J. K. Vij | Zendy; C. Keith | Zendy; Carsten Tschierske | Zendy

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Electric field induced biaxiality and the electro-optic effect in a bent-core nematic liquid crystal

Author(s) -

Mamatha Nagaraj,

Yu. P. Panarin,

Uttam Manna,

J. K. Vij,

C. Keith,

Carsten Tschierske

Publication year - 2010

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.3280817

Subject(s) - liquid crystal , ferroelectricity , electric field , bent molecular geometry , electro optic effect , materials science , condensed matter physics , optics , biaxial nematic , dielectric , core (optical fiber) , phase (matter) , electro optics , flexoelectricity , optoelectronics , physics , quantum mechanics , composite material

We report the observation of a biaxial nematic phase in a bent-core molecular system using polarizing microscopy, electro-optics, and dielectric spectroscopy, where we find that the biaxiality exists on a microscopic scale. An application of electric field induces a macroscopic biaxiality and in consequence gives rise to electro-optic switching. This electro-optic effect shows significant potential in applications for displays due to its fast high-contrast response. The observed electro-optic switching is explained in terms of the interaction of the ferroelectric clusters with the electric field.

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