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Electrooptical behavior of twisted-wedge nematic structures

J. A. Martin-Pareda, Miguel A. Muriel, José Manuel Otón

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Abstract

A new type of domain in twisted-wedge negative nematics is reported. The wedge shape allows the separation of ordinary and extraordinary beams that can be studied separately. In these conditions, at least five different regions can be detected depending on applied voltages and frequencies. Both rays are shown to, yield different diffraction patterns. The relative light intensity of several spots of these patterns is also studied.

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A new type of domain in twisted-wedge negative nematics is reported. The wedge shape allows the separation of ordinary and extraordinary beams that can be studied separately. In these conditions, at least five different regions can be detected depending on applied voltages and frequencies. Both rays are shown to, yield different diffraction patterns. The relative light intensity of several spots of these patterns is also studied.

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Available abstract

A new type of domain in twisted-wedge negative nematics is reported. The wedge shape allows the separation of ordinary and extraordinary beams that can be studied separately. In these conditions, at least five different regions can be detected depending on applied voltages and frequencies. Both rays are shown to, yield different diffraction patterns. The relative light intensity of several spots of these patterns is also studied.

Key concepts: Wedge (geometry), Optics, Liquid crystal, Diffraction, Materials science, Total internal reflection, Ptychography, Light intensity

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