17758013020 Chen Chen
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17816169069 Jinglin Jian
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Hangbo Zhao
Dr. Hangbo Zhao is an assistant professor in the Department of Aerospace and Mechanical Engineering and the Afred E. Mann Department of Biomedical Engineering at the University of Southern California, working on micro- and nanomanufacturing, and bio-integrated electronics. Prior to joining USC, he was a postdoctoral researcher at Northwestern University. He received his M.S. and Ph.D. degrees in Mechanical Engineering at MIT, and his bachelor’s degree at Tsinghua University. Dr. Zhao has received several awards including the U.S. Office of Naval Research Young Investigator Award, SME Young Manufacturing Engineer Award, and the ASME Haythornthwaite Foundation Young Investigator Award.
High-stretchability and low-hysteresis strain sensors using origami-inspired 3D mesostructures
Hangbo Zhao
Department of Aerospace and Mechanical Engineering, Afred E. Mann Department of Biomedical Engineering, University of Southern California, Los Angeles, CA, USA (hangbozh@usc.edu)
Abstract
Stretchable strain sensors are essential for various applications such as wearable electronics, prosthetics, and soft robotics. Strain sensors with high strain range, minimal hysteresis, and fast response speed are highly desirable for accurate measurements of large and dynamic deformations of soft bodies. Current stretchable strain sensors mostly rely on deformable conducting materials, which often have difficulties in achieving these properties simultaneously. In this study, we introduce capacitive strain sensor concepts based on origami-inspired three-dimensional mesoscale electrodes formed by a mechanically guided assembly process. These sensors exhibit up to 200% stretchability with 1.2% degree of hysteresis, <22 ms response time, small sensing area (~5 mm2), and directional strain responses. To showcase potential applications, we demonstrate the use of distributed strain sensors for measuring multimodal deformations of a soft continuum arm.
Figure 1: Stretchable strain sensors using origami-inspired 3D mesostructures.
References
[1] X. Huang, L. Liu, Y.H. Lin, R. Feng, Y. Shen, Y. Chang, H. Zhao. High-stretchability and low-hysteresis strain sensors using origami-inspired 3D mesostructures, Science Advances, 9, eadh9799, 2023.
