title: Flexible CNT-array double helices Strain Sensor with high stretchability for Motion Capture.
abstract: Motion capture is attracting more and more attention due to its potential wide applications in various fields. However, traditional methods for motion capture still have weakness such as high cost and space consuming. Based on these considerations, a flexible, highly stretchable strain sensor with high gauge factor for motion capture is fabricated with carbon nanotube (CNT) array double helices as the main building block. Ascribed to the unique flexible double helical CNT-array matrix, the strain sensor is able to measure strain up to 410%, with low hysteresis. Moreover, a demonstration of using this strain sensor for capture hand motion and to control a mechanical hand in real time is also achieved. A model based on finite difference method is also made to help understand the mechanism of the strain sensors. Our work demonstrates that strain sensors can measure very large strain while maintaining high sensitivity, and the motion capture based on this strain sensor is expected to be less expensive, more convenient and accessible.
authors.affiliation: Institute of Microelectronics and Tsinghua National laboratory for Information Science and Technology, Tsinghua University, Beijing 100084, China.
authors.forename: Cheng
authors.initials: C
authors.lastname: Li
authors.affiliation: Institute of Microelectronics and Tsinghua National laboratory for Information Science and Technology, Tsinghua University, Beijing 100084, China.
authors.forename: Ya-Long
authors.initials: YL
authors.lastname: Cui
authors.affiliation: Beijing Key Laboratory of Green Reaction Engineering and Technology and Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
authors.forename: Gui-Li
authors.initials: GL
authors.lastname: Tian
authors.affiliation: Institute of Microelectronics and Tsinghua National laboratory for Information Science and Technology, Tsinghua University, Beijing 100084, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Shu
authors.affiliation: Institute of Microelectronics and Tsinghua National laboratory for Information Science and Technology, Tsinghua University, Beijing 100084, China.
authors.forename: Xue-Feng
authors.initials: XF
authors.lastname: Wang
authors.affiliation: Institute of Microelectronics and Tsinghua National laboratory for Information Science and Technology, Tsinghua University, Beijing 100084, China.
authors.forename: He
authors.initials: H
authors.lastname: Tian
authors.affiliation: Institute of Microelectronics and Tsinghua National laboratory for Information Science and Technology, Tsinghua University, Beijing 100084, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Yang
authors.affiliation: Beijing Key Laboratory of Green Reaction Engineering and Technology and Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
authors.forename: Fei
authors.initials: F
authors.lastname: Wei
authors.affiliation: Institute of Microelectronics and Tsinghua National laboratory for Information Science and Technology, Tsinghua University, Beijing 100084, China.
authors.forename: Tian-Ling
authors.initials: TL
authors.lastname: Ren