首页|Smart beam via electrically addressing the dye-doped and polymer-stabilized cholesteric liquid crystals

Smart beam via electrically addressing the dye-doped and polymer-stabilized cholesteric liquid crystals

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Smart beams play a vital role in modern intelligent vehicles and have recently attracted significant attention.A spatial light modulator with high optical efficiency,low cost,and compact size is crucial for designing smart beams.Here,we mix cholesteric liquid crystals with dichroic black dye and a monomer.After UV polymerization,the sample exhibits a low driving voltage of 26 V,a high transmittance of over 70％,and an On-off ratio over 280,thanks to the joint contribution of both the absorption and the scattering effect.A smart beam device is demonstrated by electrically addressing the dye-doped and polymer-stabilized cholesteric liquid crystal with pixelated electrodes.Light patterns with arbitrary designs are projected dynamically.The switching time reaches several tens of milliseconds.This strategy brings new designs to intelligent vehicles and may also inspire applications in public information displays,advertising,and even AR/VR displays.

cholesteric liquid crystalspatial light modulationsmart beamdyeguest-host effect

彭程、徐春庭、胡伟

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College of Engineering and Applied Sciences,Nanjing University,Nanjing 210023,China

National Key Research and Development Program of ChinaNational Natural Science Foundation of China(NSFC)Fundamental Research Funds for the Central Universities

2022YFA120370362035008021314380233

2024

10.3788/COL202422.053301

中国光学快报(英文版)
中国光学学会 中国科学院上海光学精密机械研究所

中国光学快报(英文版)

CSTPCD
影响因子：1.305
ISSN：1671-7694
年,卷(期)：2024.22(5)