Electrically tunable multicolored filter based on plasmonic nanoscale phase retarder and liquid crystals
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An electrically tunable filter based on a nanoimprinted plasmonic phase retarder and liquid crystal cell is reported. A plasmon resonance and its abrupt phase jump yield structural colors between crossed polarizers. A range of 8V is enough to access to more than half of the area covered by standard RGB filters in CIE color coordinates with a single filter. Such approach is foreseen in particular to increase the spatial resolution of display devices.
META 2019, Lisbon (PT), July 2019, pp.757-756 .