Pixelated Tellurium Nanowire Assemblies for Flexible and Polarization-Driven Multimodal Anticounterfeiting

IF 9.1 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2026-10-21 DOI:10.1021/acs.nanolett.6c02891

Yingtao Zhao,Hao Liu,Jiajun Liu,Shiyu Liu,Zhenhua Yang,Jinshi Zhao,Jian Zhu

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Abstract

Anticounterfeiting technologies capable of enabling both visual authentication and machine-readable encryption are critically demanded. Here we present a wafer-scale and flexible tellurium nanowire (TeNW) platform with programmable localized orientation, enabling dual-mode anticounterfeiting based on polarization-encoded information. By employing a lock–shear and lift-off strategy, pixelated and highly aligned TeNW arrays with feature sizes down to 5 μm are realized on arbitrary rigid and flexible substrates, exhibiting dichroic ratios of up to 4.6 and stretchability exceeding 100%. Beyond passive optical security, the semiconducting nature of TeNWs allows these oriented arrays to function as active channels in asymmetric Schottky photodetectors, delivering broadband photoresponse (405–1064 nm), an anisotropic photocurrent ratio of 2.35, and an ultrafast response time of 430 μs under self-powered operation. Leveraging this capability, polarization-encoded information can be transduced into polarization-sensitive electrical signals, establishing a hardware-level security paradigm that physically encodes information in the material rather than in algorithms.

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用于柔性和极化驱动多模态防伪的像素化碲纳米线组件

防伪技术能够实现视觉认证和机器可读的加密是迫切需要的。在这里，我们提出了一个具有可编程定位方向的晶圆级柔性碲纳米线（TeNW）平台，实现了基于偏振编码信息的双模防伪。通过采用锁定剪切和提升策略，在任意刚性和柔性衬底上实现了特征尺寸小至5 μm的像素化和高度对齐的TeNW阵列，其二向色比高达4.6，拉伸性超过100%。除了无源光学安全之外，TeNWs的半导体特性允许这些定向阵列作为非对称肖特基光电探测器的有源通道，提供宽带光响应（405-1064 nm），各向异性光电流比为2.35，在自供电操作下的超快响应时间为430 μs。利用这种能力，极化编码的信息可以转换为极化敏感的电信号，从而建立硬件级安全范例，在材料中而不是在算法中对信息进行物理编码。

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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.