Self‐Erasable and Rewritable Optoexcitonic Platform for Antitamper Hardware,Advanced Optical Materials

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Self‐Erasable and Rewritable Optoexcitonic Platform for Antitamper Hardware
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2020-09-24 , DOI: 10.1002/adom.202001287
Che‐Hsuan Cheng ₁ , Da Seul Yang ₂ , Jinsang Kim _{1,

2,

3} , Parag B. Deotare ₄

Affiliation

In this work nanoscale strain engineering is utilized to create a self‐erasable and rewritable platform for antitamper hardware. The reversible structural change between trans and cis isomers in azobenzene (A3) molecules is utilized to strain the overlying tungsten diselenide (WSe₂) monolayer, thereby affecting its optical bandgap. Using such hybrid material combination, large (>1%) local effective strain is generated that results in dramatic shift (>11 nm) in photoluminescence wavelength. The strain can be rapidly relaxed under exposure to visible light or can be retained up to seven days under dark condition. Thus, by utilizing hyperspectral imaging, a self‐erasable and rewritable optoexcitonic platform is demonstrated that responds to environmental changes (light/temperature) to detect tampering of hardware system. In addition, the results open avenues for varied applications in information storage, time sensitive self‐destructive memories to light detection.

中文翻译：

用于防篡改硬件的可擦写和可重写光电激励平台

在这项工作中，利用纳米级应变工程为防篡改硬件创建了一个可自擦除和可重写的平台。之间的可逆结构变化的反式与顺式（A3）的分子被用来拉紧覆二硒化钨在偶氮苯的异构体（WSE ₂）单层，从而影响其光学带隙。使用这种混合材料组合，会产生较大的（> 1％）局部有效应变，从而导致光致发光波长发生剧烈变化（> 11 nm）。该菌株可以在可见光下迅速松弛，或者可以在黑暗条件下保留长达7天。因此，通过利用高光谱成像，展示了一种可自擦除和可重写的光激发平台，该平台响应环境变化（光/温度）以检测硬件系统的篡改。此外，结果为信息存储，对光检测具有时间敏感性的自毁式存储器的各种应用开辟了道路。

更新日期：2020-11-04

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