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Original Articles

Emergence of a novel optically isotropic transient state with low frequency in a blue phase liquid crystal mixture

, , , , , , , & show all
Pages 231-237 | Received 15 Sep 2011, Accepted 07 Oct 2011, Published online: 28 Oct 2011
 

Abstract

The electro-optical hysteresis characteristics in a blue phase liquid crystal system showing multi-domain platelet type body-centred cubic (BP-I) structure at different levels of applied electric field have been investigated. The BP-I state possesses a large degree of hysteresis due to its compact body-centred cubic structure. The hysteresis behaviour is discussed in the context of simulation and theoretical studies reported earlier. When the cell is driven with a low frequency square wave, a novel optically isotropic state with high value of the Kerr constant has been observed. Hysteresis and response time both show relatively lower values in this state with respect to the multi-domain BP-I state.

Acknowledgements

This study has been supported by the LCD Division of Samsung Electronics, and WCU programme R31–20029 through MEST.

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