Rapid Photothermal Responsive Conductive MXene Nanocomposite Hydrogels for Soft Manipulators and Sensitive Strain Sensors,Macromolecular Rapid Communications

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Rapid Photothermal Responsive Conductive MXene Nanocomposite Hydrogels for Soft Manipulators and Sensitive Strain Sensors
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2021-09-04 , DOI: 10.1002/marc.202100499
Zhichao Sun ₁ , Changyuan Song ₁ , Junjie Zhou ₁ , Chaobo Hao ₁ , Wentao Liu ₁ , Hao Liu ₁ , Jianfeng Wang ₁ , Miaoming Huang ₁ , Suqin He _{1,

2} , Mingcheng Yang ₃

Affiliation

Stimulus-responsive hydrogels are of great significance in soft robotics, wearable electronic devices, and sensors. Near-infrared (NIR) light is considered an ideal stimulus as it can trigger the response behavior remotely and precisely. In this work, a smart flexible stimuli-responsive hydrogel with excellent photothermal property and decent conductivity are prepared by incorporating MXene nanosheets into the physically cross-linked poly(N-isopropyl acrylamide) hydrogel matrix. Because of outstanding photothermal effect and dispersion of MXene, the composite hydrogel exhibits rapid photothermal responsiveness and excellent photothermal stability under the NIR irradiation. Furthermore, the anisotropic bilayer hydrogel actuator shows fast and controllable light-driven bending behavior, which can be used as a light-controlled soft manipulator. Meanwhile, the hydrogel sensor exhibits cycling stability and good durability in detecting various deformation and real-time human activities. Therefore, the present study involving the fabrication of MXene nanocomposite hydrogels for potential applications in remotely controlled actuator and wearable electronic device provides a new method for the development of photothermal responsive conductive hydrogels.

中文翻译：

用于软机械手和敏感应变传感器的快速光热响应导电 MXene 纳米复合水凝胶

刺激响应水凝胶在软机器人、可穿戴电子设备和传感器中具有重要意义。近红外 (NIR) 光被认为是一种理想的刺激，因为它可以远程精确地触发响应行为。在这项工作中，通过将 MXene 纳米片掺入物理交联的聚（N-异丙基丙烯酰胺）水凝胶基质。由于MXene出色的光热效应和分散性，复合水凝胶在近红外辐射下表现出快速的光热响应和优异的光热稳定性。此外，各向异性双层水凝胶致动器显示出快速且可控的光驱动弯曲行为，可用作光控软机械手。同时，水凝胶传感器在检测各种变形和实时人体活动方面表现出循环稳定性和良好的耐久性。因此，本研究涉及制备 MXene 纳米复合水凝胶，以用于远程控制执行器和可穿戴电子设备的潜在应用，为开发光热响应导电水凝胶提供了一种新方法。

更新日期：2021-09-04

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