Security use of the chiral photonic film made of helical liquid crystal structures

Wongi Park; Taewoo Ha; Taek Sun Jung; Kyung Ik Sim; Jae Hoon Kim; Joanna M. Wolska; Damian Pociecha; Ewa Gorecka; Teun Teun Kim; Dong Ki Yoon

doi:10.1039/d0nr03743e

Security use of the chiral photonic film made of helical liquid crystal structures

Wongi Park, Taewoo Ha, Taek Sun Jung, Kyung Ik Sim, Jae Hoon Kim, Joanna M. Wolska, Damian Pociecha, Ewa Gorecka, Teun Teun Kim, Dong Ki Yoon

Department of Physics

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

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.

Original language	English
Pages (from-to)	21629-21634
Number of pages	6
Journal	Nanoscale
Volume	12
Issue number	42
DOIs	https://doi.org/10.1039/d0nr03743e
Publication status	Published - 2020 Nov 14

Bibliographical note

Funding 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.

Publisher Copyright:
© The Royal Society of Chemistry.

All Science Journal Classification (ASJC) codes

Materials Science(all)

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10.1039/d0nr03743e

Cite this

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title = "Security use of the chiral photonic film made of helical liquid crystal structures",

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.",

author = "Wongi Park and Taewoo Ha and Jung, {Taek Sun} and Sim, {Kyung Ik} and Kim, {Jae Hoon} and Wolska, {Joanna M.} and Damian Pociecha and Ewa Gorecka and Kim, {Teun Teun} and Yoon, {Dong Ki}",

note = "Funding 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. Publisher Copyright: {\textcopyright} The Royal Society of Chemistry.",

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doi = "10.1039/d0nr03743e",

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AU - Park, Wongi

AU - Ha, Taewoo

AU - Jung, Taek Sun

AU - Sim, Kyung Ik

AU - Kim, Jae Hoon

AU - Wolska, Joanna M.

AU - Pociecha, Damian

AU - Gorecka, Ewa

AU - Kim, Teun Teun

AU - Yoon, Dong Ki

N1 - Funding 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. Publisher Copyright: © The Royal Society of Chemistry.

PY - 2020/11/14

Y1 - 2020/11/14

N2 - 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.

AB - 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.

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Security use of the chiral photonic film made of helical liquid crystal structures

Abstract

Bibliographical note

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