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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Hierarchically buckled sheath-core fibers for superelastic electronics, sensors, and muscles

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Author(s):
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Liu, Z. F. [1, 2] ; Fang, S. [1, 3] ; Moura, F. A. [1, 4] ; Ding, J. N. [2, 5] ; Jiang, N. [1, 3] ; Di, J. [1] ; Zhang, M. [6] ; Lepro, X. [1] ; Galvao, D. S. [4] ; Haines, C. S. [1] ; Yuan, N. Y. [3, 2] ; Yin, S. G. [3, 7] ; Lee, D. W. [3] ; Wang, R. [2, 3] ; Wang, H. Y. [3, 7] ; Lv, W. [3, 2] ; Dong, C. [3, 2] ; Zhang, R. C. [3, 7] ; Chen, M. J. [2, 3] ; Yin, Q. [3, 2] ; Chong, Y. T. [3] ; Zhang, R. [8, 9] ; Wang, X. [8] ; Lima, M. D. [1] ; Ovalle-Robles, R. [10] ; Qian, D. [8] ; Lu, H. [8] ; Baughman, R. H. [1, 3]
Total Authors: 28
Affiliation:
[1] Univ Texas Dallas, Alan G MacDiarmid NanoTech Inst, Richardson, TX 75080 - USA
[2] Changzhou Univ, Jiangsu Collaborat Innovat Ctr Photovolta Sci & E, Changzhou 213164 - Peoples R China
[3] Jiangnan Graphene Res Inst, Changzhou 213149 - Peoples R China
[4] Univ Estadual Campinas, Dept Appl Phys, BR-13081970 Campinas, SP - Brazil
[5] Jiangsu Univ, Micronano Sci & Technol Ctr, Zhenjiang 212013 - Peoples R China
[6] Florida State Univ, High Performance Mat Inst, Tallahassee, FL 32310 - USA
[7] Tianjin Univ Technol, Inst Mat Phys, Tianjin 300384 - Peoples R China
[8] Univ Texas Dallas, Dept Mech Engn, Richardson, TX 75080 - USA
[9] Northwestern Polytech Univ, Sch Astronaut, Xian 710072 - Peoples R China
[10] Lintec Amer, Nanosci & Technol Ctr, Richardson, TX 75081 - USA
Total Affiliations: 10
Document type: Journal article
Source: Science; v. 349, n. 6246, p. 400-404, JUL 24 2015.
Web of Science Citations: 168
Abstract

Superelastic conducting fibers with improved properties and functionalities are needed for diverse applications. Here we report the fabrication of highly stretchable (up to 1320%) sheath-core conducting fibers created by wrapping carbon nanotube sheets oriented in the fiber direction on stretched rubber fiber cores. The resulting structure exhibited distinct short-and long-period sheath buckling that occurred reversibly out of phase in the axial and belt directions, enabling a resistance change of less than 5% for a 1000% stretch. By including other rubber and carbon nanotube sheath layers, we demonstrated strain sensors generating an 860% capacitance change and electrically powered torsional muscles operating reversibly by a coupled tension-to-torsion actuation mechanism. Using theory, we quantitatively explain the complementary effects of an increase in muscle length and a large positive Poisson's ratio on torsional actuation and electronic properties. (AU)

FAPESP's process: 13/08293-7 - CCES - Center for Computational Engineering and Sciences
Grantee:Munir Salomao Skaf
Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC