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Extremely Elastic Wearable Carbon Nanotube Fiber Strain Sensor for Monitoring of Human Motion.
ACS Nano 2015; 9(6):5929-36AN

Abstract

The increasing demand for wearable electronic devices has made the development of highly elastic strain sensors that can monitor various physical parameters an essential factor for realizing next generation electronics. Here, we report an ultrahigh stretchable and wearable device fabricated from dry-spun carbon nanotube (CNT) fibers. Stretching the highly oriented CNT fibers grown on a flexible substrate (Ecoflex) induces a constant decrease in the conductive pathways and contact areas between nanotubes depending on the stretching distance; this enables CNT fibers to behave as highly sensitive strain sensors. Owing to its unique structure and mechanism, this device can be stretched by over 900% while retaining high sensitivity, responsiveness, and durability. Furthermore, the device with biaxially oriented CNT fiber arrays shows independent cross-sensitivity, which facilitates simultaneous measurement of strains along multiple axes. We demonstrated potential applications of the proposed device, such as strain gauge, single and multiaxial detecting motion sensors. These devices can be incorporated into various motion detecting systems where their applications are limited to their strain.

Authors+Show Affiliations

†Department of Mechanical Engineering, Massachusetts Institute of Technology (MIT), 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States. ‡Engineering Product Development, Singapore University of Technology and Design (SUTD), 20 Dover Drive, Singapore 138682, Singapore.†Department of Mechanical Engineering, Massachusetts Institute of Technology (MIT), 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States.†Department of Mechanical Engineering, Massachusetts Institute of Technology (MIT), 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States.†Department of Mechanical Engineering, Massachusetts Institute of Technology (MIT), 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States.‡Engineering Product Development, Singapore University of Technology and Design (SUTD), 20 Dover Drive, Singapore 138682, Singapore.†Department of Mechanical Engineering, Massachusetts Institute of Technology (MIT), 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States.†Department of Mechanical Engineering, Massachusetts Institute of Technology (MIT), 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26038807

Citation

Ryu, Seongwoo, et al. "Extremely Elastic Wearable Carbon Nanotube Fiber Strain Sensor for Monitoring of Human Motion." ACS Nano, vol. 9, no. 6, 2015, pp. 5929-36.
Ryu S, Lee P, Chou JB, et al. Extremely Elastic Wearable Carbon Nanotube Fiber Strain Sensor for Monitoring of Human Motion. ACS Nano. 2015;9(6):5929-36.
Ryu, S., Lee, P., Chou, J. B., Xu, R., Zhao, R., Hart, A. J., & Kim, S. G. (2015). Extremely Elastic Wearable Carbon Nanotube Fiber Strain Sensor for Monitoring of Human Motion. ACS Nano, 9(6), pp. 5929-36. doi:10.1021/acsnano.5b00599.
Ryu S, et al. Extremely Elastic Wearable Carbon Nanotube Fiber Strain Sensor for Monitoring of Human Motion. ACS Nano. 2015 Jun 23;9(6):5929-36. PubMed PMID: 26038807.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Extremely Elastic Wearable Carbon Nanotube Fiber Strain Sensor for Monitoring of Human Motion. AU - Ryu,Seongwoo, AU - Lee,Phillip, AU - Chou,Jeffrey B, AU - Xu,Ruize, AU - Zhao,Rong, AU - Hart,Anastasios John, AU - Kim,Sang-Gook, Y1 - 2015/06/09/ PY - 2015/6/4/entrez PY - 2015/6/4/pubmed PY - 2016/4/29/medline KW - carbon nanotube KW - elastic electrode KW - fiber KW - strain sensor KW - wearable device SP - 5929 EP - 36 JF - ACS nano JO - ACS Nano VL - 9 IS - 6 N2 - The increasing demand for wearable electronic devices has made the development of highly elastic strain sensors that can monitor various physical parameters an essential factor for realizing next generation electronics. Here, we report an ultrahigh stretchable and wearable device fabricated from dry-spun carbon nanotube (CNT) fibers. Stretching the highly oriented CNT fibers grown on a flexible substrate (Ecoflex) induces a constant decrease in the conductive pathways and contact areas between nanotubes depending on the stretching distance; this enables CNT fibers to behave as highly sensitive strain sensors. Owing to its unique structure and mechanism, this device can be stretched by over 900% while retaining high sensitivity, responsiveness, and durability. Furthermore, the device with biaxially oriented CNT fiber arrays shows independent cross-sensitivity, which facilitates simultaneous measurement of strains along multiple axes. We demonstrated potential applications of the proposed device, such as strain gauge, single and multiaxial detecting motion sensors. These devices can be incorporated into various motion detecting systems where their applications are limited to their strain. SN - 1936-086X UR - https://www.unboundmedicine.com/medline/citation/26038807/Extremely_Elastic_Wearable_Carbon_Nanotube_Fiber_Strain_Sensor_for_Monitoring_of_Human_Motion_ L2 - https://dx.doi.org/10.1021/acsnano.5b00599 DB - PRIME DP - Unbound Medicine ER -