1. 3D-Structured Stretchable Strain Sensors for Out-of-Plane Force Detection
- Author
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Ying Jiang, Bowen Zhu, Lorenzo Masia, Zhiyuan Liu, Xiaodong Chen, Yaqing Liu, Wan Ru Leow, Michele Xiloyannnis, Geng Chen, Jiancan Yu, Leonardo Cappello, Bo Liedberg, Dianpeng Qi, School of Materials Science & Engineering, School of Mechanical and Aerospace Engineering, and Innovative Centre for Flexible Devices
- Subjects
3D Sensors ,Materials science ,Capillary action ,out-of-plane force ,Acoustics ,Interface (computing) ,Electronic skin ,Soft robotics ,3D printing ,02 engineering and technology ,Carbon nanotube ,010402 general chemistry ,01 natural sciences ,law.invention ,Out of plane ,3D sensors ,carbon nanotubes assembly ,strain direction recognition ,stretchable strain sensors ,law ,General Materials Science ,Materials [Engineering] ,Plane (geometry) ,business.industry ,Mechanical Engineering ,021001 nanoscience & nanotechnology ,0104 chemical sciences ,Mechanics of Materials ,Carbon Nanotubes Assembly ,0210 nano-technology ,business - Abstract
Stretchable strain sensors, as the soft mechanical interface, provide the key mechanical information of the systems for healthcare monitoring, rehabilitation assistance, soft exoskeletal devices, and soft robotics. Stretchable strain sensors based on 2D flat film have been widely developed to monitor the in-plane force applied within the plane where the sensor is placed. However, to comprehensively obtain the mechanical feedback, the capability to detect the out-of-plane force, caused by the interaction outside of the plane where the senor is located, is needed. Herein, a 3D-structured stretchable strain sensor is reported to monitor the out-of-plane force by employing 3D printing in conjunction with out-of-plane capillary force-assisted self-pinning of carbon nanotubes. The 3D-structured sensor possesses large stretchability, multistrain detection, and strain-direction recognition by one single sensor. It is demonstrated that out-of-plane forces induced by the air/fluid flow are reliably monitored and intricate flow details are clearly recorded. The development opens up for the exploration of next-generation 3D stretchable sensors for electronic skin and soft robotics. NRF (Natl Research Foundation, S’pore) MOE (Min. of Education, S’pore) Accepted version
- Published
- 2018