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Magnetic Printing of Liquid Metal for Perceptive Soft Actuators with Embodied Intelligence
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2021-01-21 , DOI: 10.1021/acsami.0c20418 Biao Ma 1 , Chengtao Xu 1 , Lishan Cui 1 , Chao Zhao 1 , Hong Liu 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2021-01-21 , DOI: 10.1021/acsami.0c20418 Biao Ma 1 , Chengtao Xu 1 , Lishan Cui 1 , Chao Zhao 1 , Hong Liu 1
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Soft actuators with perception capability are essential for robots to intelligently interact with humans and the environment. However, existing perceptive soft actuators require complex integration and coupling between the discrete functional units to achieve autonomy. Here, we report entirely soft actuators with embodied sensing, actuation, and control at the single-unit level. This is achieved by synergistically harnessing the mechanosensing and electrothermal properties of liquid metal (LM) to actuate the thermally responsive liquid crystal elastomer (LCE). We create multifunctional LM circuits on the LCE surface using a simple and facile methodology based on magnetic printing. The fluidic LM circuit can not only be utilized as a conformable resistive heater but also as a sensory skin to perceive its own deformation. Moreover, the rational design of the LM circuits makes it possible to achieve biomimetic autonomous actuation in response to mechanical stimuli such as pressure or strain. In addition, the intrinsic stretchability of LM allows us to create 3D spring-like actuators via a simple prestretch step, and complex helical motions can be obtained upon mechanical stimulation. This work provides a unique and simple design for autonomous soft robotics with embodied intelligence.
中文翻译：
液态金属的磁性印刷，用于具有柔韧性的可感知软执行器
具有感知能力的软执行器对于机器人与人类和环境进行智能交互至关重要。然而，现有的可感知的软致动器需要复杂的集成和离散功能单元之间的耦合以实现自治。在这里，我们报告了在单单元水平上实现感测，致动和控制的完全软致动器。这是通过协同利用液态金属（LM）的机械传感和电热特性来激活热响应液晶弹性体（LCE）来实现的。我们使用基于磁性印刷的简单便捷的方法在LCE表面上创建多功能LM电路。LM射流回路不仅可以用作合适的电阻加热器，还可以用作感知其自身变形的感觉皮肤。此外，LM电路的合理设计使得响应机械刺激（例如压力或应变）实现仿生自主致动成为可能。此外，LM的固有可拉伸性使我们能够创建类似于弹簧的3D执行器通过简单的预拉伸步骤，可以在机械刺激下获得复杂的螺旋运动。这项工作为具有体现智能的自主软机器人提供了独特而简单的设计。
更新日期：2021-02-03
中文翻译：
液态金属的磁性印刷，用于具有柔韧性的可感知软执行器
具有感知能力的软执行器对于机器人与人类和环境进行智能交互至关重要。然而，现有的可感知的软致动器需要复杂的集成和离散功能单元之间的耦合以实现自治。在这里，我们报告了在单单元水平上实现感测，致动和控制的完全软致动器。这是通过协同利用液态金属（LM）的机械传感和电热特性来激活热响应液晶弹性体（LCE）来实现的。我们使用基于磁性印刷的简单便捷的方法在LCE表面上创建多功能LM电路。LM射流回路不仅可以用作合适的电阻加热器，还可以用作感知其自身变形的感觉皮肤。此外，LM电路的合理设计使得响应机械刺激（例如压力或应变）实现仿生自主致动成为可能。此外，LM的固有可拉伸性使我们能够创建类似于弹簧的3D执行器通过简单的预拉伸步骤，可以在机械刺激下获得复杂的螺旋运动。这项工作为具有体现智能的自主软机器人提供了独特而简单的设计。
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