TY - JOUR
T1 - Robust Optical Data Encryption by Projection-Photoaligned Polymer-Stabilized-Liquid-Crystals
AU - Liu, Siying
AU - Alfarhan, Saleh
AU - Wang, Wenbo
AU - Feng, Shuai
AU - Zhu, Yuxiang
AU - Liu, Luyang
AU - Song, Kenan
AU - Yang, Sui
AU - Jin, Kailong
AU - Chen, Xiangfan
N1 - Publisher Copyright:
© 2023 Wiley-VCH GmbH.
PY - 2023/11/6
Y1 - 2023/11/6
N2 - The emerging Internet of Things (IoTs) invokes increasing security demands that require robust encryption or anti-counterfeiting technologies. Albeit being acknowledged as efficacious solutions in processing elaborate graphical information via multiple degrees of freedom, optical data encryption and anti-counterfeiting techniques are typically inept in delivering satisfactory performance without compromising the desired ease-of-processibility or compatibility, thus leading to the exploration of novel materials and devices that are competent. Here, a robust optical data encryption technique is demonstrated utilizing polymer-stabilized-liquid-crystals (PSLCs) combined with projection photoalignment and photopatterning methods. The PSLCs possess implicit optical patterns encoded via photoalignment, as well as explicit geometries produced via photopatterning. Furthermore, the PSLCs demonstrate improved robustness against harsh chemical environments and thermal stability and can be directly deployed onto various rigid and flexible substrates. Based on this, it is demonstrated that a single PSLC is apt to carry intricate information or serve as an exclusive watermark with both implicit features and explicit geometries. Moreover, a novel, generalized design strategy is developed, for the first time, to encode intricate and exclusive information with enhanced security by spatially programming the photoalignment patterns of a pair of cascade PSLCs, which further illustrates the promising capabilities of PSLCs in optical data encryption and anti-counterfeiting.
AB - The emerging Internet of Things (IoTs) invokes increasing security demands that require robust encryption or anti-counterfeiting technologies. Albeit being acknowledged as efficacious solutions in processing elaborate graphical information via multiple degrees of freedom, optical data encryption and anti-counterfeiting techniques are typically inept in delivering satisfactory performance without compromising the desired ease-of-processibility or compatibility, thus leading to the exploration of novel materials and devices that are competent. Here, a robust optical data encryption technique is demonstrated utilizing polymer-stabilized-liquid-crystals (PSLCs) combined with projection photoalignment and photopatterning methods. The PSLCs possess implicit optical patterns encoded via photoalignment, as well as explicit geometries produced via photopatterning. Furthermore, the PSLCs demonstrate improved robustness against harsh chemical environments and thermal stability and can be directly deployed onto various rigid and flexible substrates. Based on this, it is demonstrated that a single PSLC is apt to carry intricate information or serve as an exclusive watermark with both implicit features and explicit geometries. Moreover, a novel, generalized design strategy is developed, for the first time, to encode intricate and exclusive information with enhanced security by spatially programming the photoalignment patterns of a pair of cascade PSLCs, which further illustrates the promising capabilities of PSLCs in optical data encryption and anti-counterfeiting.
KW - anti-counterfeiting
KW - liquid crystals
KW - optical data encryption
KW - photoalignment
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U2 - 10.1002/adom.202301364
DO - 10.1002/adom.202301364
M3 - Article
AN - SCOPUS:85169320565
SN - 2195-1071
VL - 11
JO - Advanced Optical Materials
JF - Advanced Optical Materials
IS - 21
M1 - 2301364
ER -