Wang Jiachen, Yang Sennan, Ding Peitao, Cao Xiangyu, Zhang Yue, Cao Shitai, Zhang Kuikui, Kong Shixiao, Zhou Yunlei, Wang Xiaoliang, Li Dongchan, Kong Desheng
College of Engineering and Applied Sciences, National Laboratory of Solid State Microstructure, Collaborative Innovation Center of Advanced Microstructures, and Jiangsu Key Laboratory of Artificial Functional Materials , Nanjing University , Nanjing 210093 , China.
College of Chemical Engineering and Technology, Engineering Research Center of Seawater Utilization Technology of Ministry of Education, State Key Laboratory of Reliability and Intelligence of Electrical Equipment , Hebei University of Technology , Tianjin 300130 , China.
ACS Appl Mater Interfaces. 2019 May 22;11(20):18590-18598. doi: 10.1021/acsami.9b04730. Epub 2019 May 13.
Stretchable electronics has emerged as a new class of electronic technology to expand the applications of conventional electronics built on rigid wafers. Among various systems, liquid-state devices utilize electronically active liquids to achieve excellent stretchability and durability. The widespread adaption to such attractive form of device is hindered by the lack of robust fabrication approach to precisely and efficiently assemble liquid-state materials into functional systems. In this study, an additive manufacturing platform for digital fabrication of three-dimensional elastomeric structures is reported. The shear-thinning ink is formulated to enable omnidirectional printing process. Various elastic features with complex architectures are generated without using sacrificial materials, which consist of overhanging parts, suspended structures, and embedded channels. Harnessing the unique printability allows facile creation of elastomeric sensors with strain- and pressure-sensing capabilities by simply filling the embedded microchannels with liquid metal. A smart glove to capture hand gestures is also demonstrated as a fully integrated electronic system with liquid-state components. The liquid-state stretchable electronics developed here may find potential applications in biomedical instruments, wearable devices, and soft robotics.
可拉伸电子器件已成为一类新型电子技术，以拓展基于刚性晶圆构建的传统电子器件的应用。在各种系统中，液态器件利用具有电子活性的液体来实现出色的拉伸性和耐用性。然而，由于缺乏将液态材料精确且高效地组装成功能系统的稳健制造方法，这种极具吸引力的器件形式的广泛应用受到了阻碍。在本研究中，报道了一种用于三维弹性体结构数字制造的增材制造平台。所配制的剪切变稀墨水能够实现全向打印过程。无需使用牺牲材料即可生成具有复杂架构的各种弹性特征，这些特征包括悬垂部分、悬浮结构和嵌入式通道。利用这种独特的可打印性，通过简单地用液态金属填充嵌入式微通道，就能轻松制造出具有应变和压力传感能力的弹性体传感器。还展示了一款用于捕捉手势的智能手套，它是一个具有液态组件的完全集成电子系统。这里开发的液态可拉伸电子器件可能在生物医学仪器、可穿戴设备和软体机器人领域找到潜在应用。
