A Highly Sensitive Piezoresistive Electronic Skin: Coulomb Blockade-Favored Dynamic Conduction Paths in Micellar Brush-Templated Metal Nanoarrays

IF 7.2 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Chemistry of Materials Pub Date : 2025-04-29 DOI:10.1021/acs.chemmater.5c0003110.1021/acs.chemmater.5c00031

Yao Lu, Yurui Xing, Jiawei Tao*, Shuang Wang, Geyu Lin, Hongti Zhang* and Huibin Qiu*,

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Abstract

The creation of tailored micro-nanostructures frequently brings intriguing features to flexible electronic skins (E-skins). However, the construction of nanoscale architectures on soft substrates under mild conditions remains a critical challenge. Herein, we report a facile micellar brush-templated strategy for the precise fabrication of conductive metal nanoarrays on diverse flexible substrates. Erect micelle/Pt-nanoarrays with precisely tunable heights are prepared through surface-initiated living growth of cylindrical micellar brushes followed by the dense decoration of Pt nanoparticles at an ambient temperature. The stacking of nanoparticles imparts distinctive electron transport characteristics, facilitating the establishment of dynamic conductive pathways during interlocking and resulting in substantial enhancement of pressure sensitivity. Thus, the micelle/Pt-nanoarray-based E-skin reveals remarkably high sensitivity over a wide pressure range, enabling comprehensive detection capabilities encompassing foot pressure, finger bending, wrist pulse, and weak gas flow. Moreover, these conductive metal nanoarrays can be readily fabricated on soft substrates with a tortuous surface, favoring the formation of hierarchically structured E-skin with linear response across a broad scale.

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高灵敏度压阻电子皮肤：胶束电刷模板金属纳米阵列中库仑阻塞有利的动态传导路径

定制微纳米结构的创造经常给柔性电子皮肤（e -skin）带来有趣的特性。然而，在温和条件下在软基板上构建纳米级结构仍然是一个关键的挑战。在此，我们报告了一种简便的胶束刷模板策略，用于在各种柔性衬底上精确制造导电金属纳米阵列。在室温下，通过圆柱形胶束刷的表面激活生长和Pt纳米粒子的致密修饰，制备了具有精确可调高度的直立胶束/Pt纳米阵列。纳米颗粒的堆叠赋予了独特的电子传递特性，促进了联锁过程中动态导电途径的建立，从而大大增强了压力敏感性。因此，基于胶束/ pt纳米阵列的电子皮肤在很宽的压力范围内显示出非常高的灵敏度，能够实现包括足压、手指弯曲、手腕脉冲和微弱气体流动在内的全面检测能力。此外，这些导电金属纳米阵列可以很容易地在具有弯曲表面的软基板上制造，有利于形成具有广泛线性响应的分层结构的E-skin。

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来源期刊

Chemistry of Materials 工程技术-材料科学：综合

CiteScore

14.10

自引率

5.80%

发文量

929

审稿时长

1.5 months

期刊介绍： The journal Chemistry of Materials focuses on publishing original research at the intersection of materials science and chemistry. The studies published in the journal involve chemistry as a prominent component and explore topics such as the design, synthesis, characterization, processing, understanding, and application of functional or potentially functional materials. The journal covers various areas of interest, including inorganic and organic solid-state chemistry, nanomaterials, biomaterials, thin films and polymers, and composite/hybrid materials. The journal particularly seeks papers that highlight the creation or development of innovative materials with novel optical, electrical, magnetic, catalytic, or mechanical properties. It is essential that manuscripts on these topics have a primary focus on the chemistry of materials and represent a significant advancement compared to prior research. Before external reviews are sought, submitted manuscripts undergo a review process by a minimum of two editors to ensure their appropriateness for the journal and the presence of sufficient evidence of a significant advance that will be of broad interest to the materials chemistry community.