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Thermo‐electro‐optic switch based on polymer dispersed liquid crystal composite

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2 Author(s)
Jain, Sukhmal C. ; Display Devices Group, National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi‐110012, India ; Thakur, Ravindra S.

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A new type of thermo‐electro‐optic switch based on polymer dispersed liquid crystal (PDLC) composite is reported below. The PDLC composite has been made by dispersing a dual frequency addressable liquid crystal (LC) mixture in an isotropic polymer matrix in the form of very fine droplets of micron and submicron sizes. The PDLC cell in the presence of an electric field can be made to switch from transparent to scattering state or vice‐versa by varying its temperature by ±≥1 °C, respectively. Moreover, the transition temperature of the PDLC switch can be set by varying the frequency of the electric biasing field.

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Applied Physics Letters  (Volume:61 ,  Issue: 14 )