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.
|Number of pages||6|
|Publication status||Published - 2020 Nov 14|
Bibliographical noteFunding Information:
This study was supported by a grant from the National Research Foundation (NRF) and funded by the Korean Government (MSIT) (2017R1E1A1A01072798 and 2018R1A5A1025208) and van der Waals Materials Research Center (2017R1A5A1014862). This work was also partially supported by IBS-R011-D1.
© The Royal Society of Chemistry.
All Science Journal Classification (ASJC) codes
- Materials Science(all)