Security use of bilayer dichroic films made of liquid crystal polymer networks

IF 3.7 3区 工程技术 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Information Display Pub Date : 2021-03-30 DOI:10.1080/15980316.2021.1905723
Geonhyeong Park, D. Yoon
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引用次数: 2

Abstract

ABSTRACT We report on bilayer dichroic dye-doped liquid crystal (BDLC) films for patternable color codes, which can be used in anti-counterfeiting applications such as security codes and, unlike the conventional single-layer LC color films, show unique color changes depending on the direction of the polarization of the incident light that passes through them. This is a facile way to enhance the security level of security codes. BDLC films are fabricated by laminating two single-layer LC polymer network films with crossed optical axes. We believe that BDLC films can be used as a new platform for a security-enhanced anti-counterfeiting code that can replace complex chiral materials or expensive plasmonic particles.
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液晶聚合物网络双层二向色膜的安全应用
摘要:我们报道了一种用于图案彩色编码的双层二向色染料掺杂液晶(BDLC)薄膜,它可以用于防伪应用,如防伪码,与传统的单层LC彩色薄膜不同,它可以根据入射光的偏振方向显示出独特的颜色变化。这是一种提高安全码安全级别的简便方法。将两层具有交叉光轴的单层LC聚合物网络膜层合制成BDLC薄膜。我们相信,BDLC薄膜可以作为一个新的平台,用于安全增强的防伪代码,可以取代复杂的手性材料或昂贵的等离子体粒子。
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来源期刊
Journal of Information Display
Journal of Information Display MATERIALS SCIENCE, MULTIDISCIPLINARY-
CiteScore
7.10
自引率
5.40%
发文量
27
审稿时长
30 weeks
期刊最新文献
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