4D Printing Strain Self-Sensing and Temperature Self-Sensing Integrated Sensor-Actuator with Bioinspired Gradient Gaps
4D Printing Strain Self-Sensing and Temperature Self-Sensing Integrated Sensor-Actuator with Bioinspired Gradient Gaps
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DOI：
10.1002/advs.202000584
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发表时间：
2020-05-13
期刊：
影响因子：
15.1
通讯作者：
Shi, Yusheng
中科院分区：
文献类型：
--
作者：
Chen, Daobing;Liu, Qingping;Shi, Yusheng
集成传感器-致动器具有令人兴奋的功能，如动作自感知，位置自感知，姿态自感知或主动感知，在生物医学设备，人机交互，智能自我保护设备和仿人机器人中有很好的应用前景。尽管最近的进展，它仍然具有挑战性，以实现一个宏观集成的传感器-致动器的材料系统的微结构。为了解决这一关键挑战，据报道，4D打印仿生微结构策略设计了一种能够同时驱动和感知的高性能集成传感器-致动器。通过将纳米炭黑/聚乳酸复合材料与仿生梯度微间隙结构相结合，实现了解耦的热刺激和应变感觉。因此，印刷集成传感器-致动器可以主动触摸由热刺激触发的物体，并通过电阻变化自感知触摸状态。可以预期，这种行为的基本设计原理可以用于开发各种形状和功能的集成传感器-致动器，以满足所需的应用。
Integrated sensor-actuators with exciting functionalities, such as action self-sensing, position self-sensing, posture self-sensing, or active sensing, are promising for applications in biomedical device, human-machine interaction, intelligent self-protection devices, and humanoid robots. Despite recent progress, it remains challenging to achieve a macroscopical integrated sensor-actuator in a material system with microstructures. To address this critical challenge, a 4D printing bioinspired microstructure strategy is reported to design a high-performance integrated sensor-actuator capable of simultaneous actuation and sensation. Decoupled thermal stimulation and strain sensation is achieved by combining nanocarbon black/polylactic acid composites with bioinspired gradient microgap structures. As a result, printed integrated sensor-actuators can actively touch objects triggered by thermal stimulation and self-sense the touching state through the resistance change. It is anticipated that the basic design principle underlying this behavior can be used to develop integrated sensor-actuators of various shapes and functionalities to meet desirable applications.