利用聚二乙炔机械变色的面内各向异性的高灵敏度可穿戴色力传感器

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-04-24 DOI:10.1021/acs.nanolett.5c00085

Jianlu Zheng, Jiali Chen, Massimiliano Galluzzi, Yuge Hou, Kaori Sugihara

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引用次数: 0

摘要

力敏度是机械致色材料的一个重要参数，决定着机械致色材料的应用范围和实际效果。在这项研究中，我们揭示了一个未开发的自由度──面内各向异性──显著提高聚二乙炔的力敏感性。利用我们新开发的双纳米摩擦力/荧光显微镜装置，我们发现当外力垂直于平面内聚合物骨架时，力灵敏度达到峰值。这种现象可以用“多米诺骨牌效应”来解释，即点载荷沿着骨架传播，甚至在距离接触点数百纳米的地方影响聚合物结构。利用这一发现，我们开发了一种高灵敏度，可拉伸的力传感器，并证明垂直于力方向排列聚二乙炔晶体可将传感器的灵敏度提高14倍。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Highly Sensitive Wearable Chromic Force Sensor Utilizing In-Plane Anisotropy in Polydiacetylene Mechanochromism

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Highly Sensitive Wearable Chromic Force Sensor Utilizing In-Plane Anisotropy in Polydiacetylene Mechanochromism

Force sensitivity is a crucial parameter in mechanochromic materials, determining their application range and practical success. In this study, we reveal an unexplored degree of freedom─in-plane anisotropy─for significantly enhancing the force sensitivity of polydiacetylene. Utilizing our newly developed dual nanofriction force/fluorescence microscopy setup, we discovered that force sensitivity reaches its peak when external forces are applied perpendicular to the polymer backbones in-plane. This phenomenon is explained by a “domino effect”, where point loads propagate along the backbones and affect the polymer structure even hundreds of nanometers from the contact point. Leveraging this finding, we developed a highly sensitive, stretchable force sensor and demonstrated that aligning polydiacetylene crystals perpendicular to the force direction increased the sensor’s sensitivity by up to 14-fold.

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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.