Multifunctional Ti3C2Tx MXene/Low-Density Polyethylene Soft Robots with Programmable Configuration for Amphibious Motions,ACS Applied Materials & Interfaces

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Multifunctional Ti3C2Tx MXene/Low-Density Polyethylene Soft Robots with Programmable Configuration for Amphibious Motions
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2021-09-14 , DOI: 10.1021/acsami.1c11056
Xin-Jie Luo ₁ , Lulu Li ₁ , Hao-Bin Zhang ₁ , Sai Zhao ₁ , Yu Zhang ₁ , Wei Chen ₂ , Zhong-Zhen Yu ₂

Affiliation

To diversify the motion modes of multifunctional soft robots capable of shape programming, we fabricate a biomimetic and programmable Ti₃C₂T_x MXene/low-density polyethylene (LDPE) bilayer actuator by spraying an aqueous dispersion of MXenes onto a plasma-activated LDPE film, followed by optimal thermal regulations. Because of the eminent light absorption and photothermal/electrothermal features of MXenes and the extremely mismatched thermal expansion coefficients between the two layers, the MXene/LDPE actuator can be sensitively driven by many stimuli of near-infrared light, electricity, and heat. The initial configuration of the bilayer actuator can be programmed by tuning the thermal regulation temperature, thereby assembling multiple actuation units to achieve biomimetic functions, such as artificial iris, mechanical arms, and flying birds. More importantly, in virtue of free shape cutting and programmable configuration, the MXene/LDPE bilayer actuator can perform untethered locomotion including crawling, rolling, and sailing. The soft robots can not only move on the ground in different forms but also sail on water along any designated routes and complete the surface cargo transportation driven by a near-infrared laser via the photothermal Marangoni effect. The shape-programmable methodology for the three amphibious motion modes lays foundations for wide applications of the MXene-based soft robots.

中文翻译：

具有两栖运动可编程配置的多功能 Ti3C2Tx MXene/低密度聚乙烯软机器人

为了使能够进行形状编程的多功能软机器人的运动模式多样化，我们制造了一种仿生和可编程的 Ti ₃ C ₂ T _xMXene/低密度聚乙烯 (LDPE) 双层致动器，通过将 MXenes 的水分散体喷涂到等离子体激活的 LDPE 薄膜上，然后进行最佳热调节。由于 MXenes 出色的光吸收和光热/电热特性，以及两层之间极不匹配的热膨胀系数，MXene/LDPE 致动器可以被许多近红外光、电和热的刺激敏感地驱动。双层致动器的初始配置可以通过调节热调节温度进行编程，从而组装多个致动单元以实现仿生功能，例如人造虹膜、机械臂和飞鸟。更重要的是，凭借自由形状切割和可编程配置，MXene/LDPE 双层执行器可以执行不受限制的运动，包括爬行、滚动和航行。软体机器人不仅可以在地面上以不同的形式移动，还可以沿着任何指定的路线在水上航行，并通过光热马兰戈尼效应完成近红外激光驱动的水面货物运输。三种两栖运动模式的形状可编程方法为基于 MXene 的软机器人的广泛应用奠定了基础。

更新日期：2021-09-29

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