Asymmetric optical camouflage:tuneable reflective colour accompanied by the optical Janus effect
作者机构：Sensor System Research CenterKorea Institute of Science and TechnologySeoul 02792Republic of Korea Department of Micro/Nano SystemsKorea UniversitySeoul 02841Republic of Korea School of Electronic and Electrical EngineeringKyungpook National UniversityDaegu 41566Republic of Korea Nanophotonics Research CenterKorea Institute of Science and TechnologySeoul 02792Republic of Korea School of Mechanical EngineeringKorea UniversitySeoul 02841Republic of Korea
出 版 物：《Light(Science & Applications)》 (光（科学与应用)（英文版）)
年 卷 期：2020年第9卷第1期
页 面：325-334页
核心收录：
学科分类：070207[理学-光学] 0808[工学-电气工程] 07[理学] 0809[工学-电子科学与技术（可授工学、理学学位）] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学]
基 金：supported in part by KIST intramural grants(Nos.2E30506,2V07880,and 2E30140) supported by the Basic Science Research Programme through the National Research Foundation of Korea(NRF)funded by the Ministry of Science and ICT(2020R1A4A1019518) supported by NRF grant funded by MSIT(2020R1A2B5B03002005) support from the National Research Foundation of Korea(NRF)grant funded by the Korean government(MSIT)(No.2020R1C1C1013474).
主 题：asymmetric generating readily
摘 要：Going beyond an improved colour gamut,an asymmetric colour contrast,which depends on the viewing direction,and its ability to readily deliver information could create opportunities for a wide range of applications,such as nextgeneration optical switches,colour displays,and security features in anti-counterfeiting devices.Here,we propose a simple Fabry–Perot etalon architecture capable of generating viewing-direction-sensitive colour contrasts and encrypting pre-inscribed information upon immersion in particular solvents(optical camouflage).Based on the experimental verification of the theoretical modelling,we have discovered a completely new and exotic optical phenomenon involving a tuneable colour switch for viewing-direction-dependent information delivery,which we define as asymmetric optical camouflage.
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