Electric‐Tunable Photoluminescence of 2D ErOCl for High‐Security Encryption of Programmable Information

Chen, Ping; Li, Dongyan; Li, Zexin; Pi, Lejing; Xu, Xiang; Wang, Haoyun; Zhou, Xing; Zhai, Tianyou

doi:10.1002/adom.202102562

Cited by 5 publications

(1 citation statement)

References 53 publications

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“…With different numbers of QDs near the UCNPs-template, heterostructures A and B carrying different optical information show two distinct color coordinates in the chromaticity diagram, with no significant power density dependency. Given that the TCL moving velocity is adjustable to regulate the particles accumulating density at different assembly region, we can control the heterostructures permutation and combination on a substrate, and apply them to encrypt an image [41] carrying programmable signals of excitation power density. The output of each UCL peak intensity from a heterostructure increases with the excitation power density, making the skilled attackers relate these PL outputs to the input signals and decrypt the original image information.…”

Section: Resultsmentioning

confidence: 99%

Embossed Template Induced Particles Assembly for Heterostructures and the Application in High‐Security Encryption

Guo

Ruan

et al. 2022

Adv Funct Materials

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The coassembly of primary particles into heterostructures represents a significant strategy for advanced fabrication of multi-functional materials or devices, and templated assembly has shown remarkable advantage for deterministic placement of particles and the efficient integration with substrates. However, template induced particles coassembly, which is significant for integrating multicomponents at desired positions, is still challenging. Herein, a facile strategy of embossed templateinduced particles coassembly for diverse superstructures and precise patterns is reported. Tunable region selective assembly of particles is demonstrated by controlling the resistance force via designing the embossed edge and surface roughness of the template. Through regulating the template morphologies and particles composition, well-controlled coassembly of "flower" shaped heterostructure and chiral superstructure arrays are realized. Furthermore, the printable nanomaterials self-assembly template is employed to achieve totally bottom-up fabrication of excitation responsive heterostructure arrays, in which the multi-photons process based energy transfer is studied to show the application in highsecure encryption. With the advantage of accurate position and compatible to different materials, this strategy is expected to provide a promising platform for fabricating micro/nanoscale advanced devices.

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Section: Resultsmentioning

confidence: 99%

Embossed Template Induced Particles Assembly for Heterostructures and the Application in High‐Security Encryption

Guo

Ruan

et al. 2022

Adv Funct Materials

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Low‐temperature chemical vapor deposition growth of 2D materials

Lei,

Wang,

et al. 2024

Electron

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Two‐dimensional (2D) materials have atomic thickness, and thickness‐dependent electronic transport, optical and thermal properties, highlighting great promise applications in future semiconductor devices. Chemical vapor deposition (CVD) is considered as an industry‐oriented method for macro‐synthesis of 2D materials. In conventional CVD, high temperatures are required for the synthesis of high‐quality large‐size 2D materials, which is incompatible with of back‐end‐of‐line of the complementary metal oxide semiconductor (CMOS) techniques. Therefore, low‐temperature synthesis of 2D materials is of critical importance for the advancement toward practical applications of 2D materials with the CMOS technologies. In this review, we focus on strategies for the low‐temperature growth of 2D materials, including the use of low‐melting‐point precursors, metal‐organic CVD, plasma‐enhanced CVD, van der Waals‐substrate vapor phase epitaxy, tellurium‐assisted CVD, salt‐assisted CVD, etc., with discussions of their reaction mechanisms, applications, associated advantages, and limitations. We also provide an outlook and perspectives of future low‐temperature chemical vapor deposition growth of 2D materials.

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Bio‐Inspired Electro‐Thermal‐Hygro Responsive Rewritable Systems with Temporal/Spatial Control for Environment‐Interactive Information Display

Shi

Wei

et al. 2023

Small

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Utilization of rewritable luminescent materials for secure information storage and delivery has long been envisaged to reduce the cost and environmental wastes. However, it remains challenging to realize a temporally/spatially controlled display of the written information, which is crucial for secure information encryption. Here, inspired by bioelectricity‐triggered skin pattern switching in cephalopods, an ideal rewritable system consisting of conductive graphene film and carbon dots (CDs) gel with blue‐to‐red fluorescence‐color changes via water‐triggered CDs aggregation and re‐dispersion is presented. Its rewritability is guaranteed by using water ink to write on the CDs‐gel and employing Joule heat of graphene film to evaporate water. Due to the highly controlled electrical stimulus, temporally/spatially controlled display is achieved, enabling on‐demand delivery and duration time regulation of the written information. Furthermore, new‐concept environment‐interactive rewritable system is obtained by integrating sensitive acoustic/optical sensors and multichannel electronic time‐delay devices. This work opens unprecedented avenues of rewritable systems and expands potential uses for information encryption/delivery.

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Electric‐Tunable Photoluminescence of 2D ErOCl for High‐Security Encryption of Programmable Information

Cited by 5 publications

References 53 publications

Embossed Template Induced Particles Assembly for Heterostructures and the Application in High‐Security Encryption

Embossed Template Induced Particles Assembly for Heterostructures and the Application in High‐Security Encryption

Low‐temperature chemical vapor deposition growth of 2D materials

Bio‐Inspired Electro‐Thermal‐Hygro Responsive Rewritable Systems with Temporal/Spatial Control for Environment‐Interactive Information Display

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