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

Mamatha Nagaraj; Y. P. Panarin; U. Manna; J. K. Vij; C. Keith; C. Tschierske

doi:10.1063/1.3280817

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

Mamatha Nagaraj, Y. P. Panarin, U. Manna, J. K. Vij, C. Keith, C. Tschierske

Research output: Contribution to journal › Article › peer-review

53 Citations (Scopus)

Abstract

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.

Original language	English
Article number	011106
Journal	Applied Physics Letters
Volume	96
Issue number	1
DOIs	https://doi.org/10.1063/1.3280817
Publication status	Published - 2010

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AU - Keith, C.

AU - Tschierske, C.

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

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