Security use of the chiral photonic film made of helical liquid crystal structures
Source abstract
Abstract
The color change of photonic crystals (PCs) has been widely studied due to their beauty and anti-counterfeiting applications. Herein, we demonstrated security codes based on chiral PCs that cannot be easily mimicked and are quite different from the conventional technology used currently. The chiral PCs can be made by self-assembly and the structural colors change based on the polarization of the light in the transmission mode. These color changes are easily detected in real-time and are useful in the fabrication of anti-counterfeiting patterns that show beautiful and diverse color changes with rotating polarizers. We believe this can provide a new platform in various security and color-based applications.
Source: openalex_inverted_index · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Photonic Crystals and Applications · Liquid Crystal Research Advancements · Photonic and Optical Devices
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Graduate School of Nanoscience and Technology
Korea Advanced Institute of Science and Technology (KAIST)
Daejeon 34141
Republic of Korea
Center for Integrated Nanostructure Physics (CINAP)
Institute for Basic Science (IBS)
Suwon 16419
Sungkyunkwan University
Department of Physics
Yonsei University
Seoul 03722
Faculty of Chemistry
University of Warsaw
Warsaw
Poland
Department of Chemistry and KINC
Funding
National Research Foundation of Korea · Ministry of Science and ICT, South Korea · Institute for Basic Science
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