A Novel Microsteganography Technique Leveraging Engineered Relaxation Pathways of High-Energy Excitons in Monolayer WSe2

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-05-29 DOI:10.1021/acs.nanolett.5c01706

Chuxin Yan, Baiyang Sun, Yuanzheng Li, Rui Li, Qingbin Wang, Yongsheng Gao, Wei Xin, Weizhen Liu, Haiyang Xu, Yichun Liu

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Abstract

In the age of information overload, protecting sensitive data demands reliable solutions, with multidimensional optical encryption emerging as a transformative technology. Wavelength, a critical parameter of light, holds significant potential for developing highly secure encryption systems that restrict information access to specific illumination conditions, further enhancing data security. However, the encryption technology related to wavelength is still in its nascent stages. Here, we report a breakthrough wavelength-dependent microsteganography technique based on a monolayer WSe₂/CdSe quantum dots heterostructure. By precise modulation of the band alignment to engineer the relaxation pathways of high-energy excitons in WSe₂, the heterostructure encodes information that is selectively activated by a specific wavelength of light. Furthermore, the incorporation of Morse code encryption seamlessly merges spectral selectivity with enhanced information complexity, creating a dual-layer security mechanism. This work not only advances the field of optical encryption but also opens new avenues for applications in secure data storage and transmission.

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利用单层WSe2中高能激子的工程弛豫通路的新型显微隐写技术

在信息过载的时代，保护敏感数据需要可靠的解决方案，多维光学加密正在成为一种变革性技术。波长是光的一个关键参数，对于开发高度安全的加密系统具有重要潜力，该系统将信息访问限制在特定的照明条件下，进一步增强数据安全性。然而，与波长相关的加密技术仍处于起步阶段。在这里，我们报道了一种基于单层WSe2/CdSe量子点异质结构的突破性波长相关显微隐写技术。通过精确调制WSe2中的能带对准来设计高能激子的弛豫路径，异质结构编码的信息被特定波长的光选择性激活。此外，莫尔斯电码加密的结合无缝地融合了频谱选择性和增强的信息复杂性，创建了双层安全机制。这项工作不仅推动了光加密领域的发展，而且为安全数据存储和传输的应用开辟了新的途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.