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An in-plane switching (IPS) liquid crystal (LC) gel for light shutter is demonstrated. In the voltage-off state, the LC gel is transparent. As the voltage exceeds a threshold, light scattering occurs due to microdomain formations. This light scattering is found to be polarization independent. Such an IPS LC gel is a broadband device and has a wide viewing angle and a relatively fast response time. Potential applications for switchable windows, variable optical attenuators, and reflective displays are considered.
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Ren et al. (2004) studied this question.
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