Xu Fa-Feng, Gong Zhong-Liang, Zhong Yu-Wu, Yao Jiannian, Zhao Yong Sheng
Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
University of Chinese Academy of Sciences, Beijing 100049, China.
Research (Wash D C). 2020 Dec 2;2020:6539431. doi: 10.34133/2020/6539431. eCollection 2020.
Information encryption and decryption have attracted particular attention; however, the applications are frequently restricted by limited coding capacity due to the indistinguishable broad photoluminescence band of conventional stimuli-responsive fluorescent materials. Here, we present a concept of confidential information encryption with photoresponsive liquid crystal (LC) lasing materials, which were used to fabricate ordered microlaser arrays through a microtemplate-assisted inkjet printing method. LC microlasers exhibit narrow-bandwidth single-mode emissions, and the wavelength of LC microlasers was reversibly modulated based on the optical isomerization of the chiral dopant in LCs. On this basis, we demonstrate phototunable information authentication on LC microlaser arrays using the wavelength of LC microlasers as primary codes. These results provide enlightenment for the implementation of microlaser-based cryptographic primitives for information encryption and anticounterfeiting applications.
信息加密和解密已引起特别关注；然而，由于传统刺激响应荧光材料的宽光致发光带难以区分，其应用常常受到编码能力有限的限制。在此，我们提出了一种利用光响应液晶（LC）激光材料进行机密信息加密的概念，该材料通过微模板辅助喷墨打印方法用于制造有序微激光阵列。LC微激光表现出窄带宽单模发射，并且基于LC中手性掺杂剂的光异构化，LC微激光的波长可被可逆调制。在此基础上，我们展示了以LC微激光的波长作为主要代码，在LC微激光阵列上进行光可调信息认证。这些结果为实现基于微激光的加密原语用于信息加密和防伪应用提供了启示。
