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Measurement of finger joint angle using stretchable carbon nanotube strain sensor.
PLoS One. 2019; 14(11):e0225164.Plos

Abstract

Strain sensors capable of monitoring complex human motions are highly desirable for the development of wearable electronic devices and healthcare monitoring systems. Excellent sensitivity and a wide working range of the sensor material are important requirements for distinguishing dynamic human motion. In this study, a highly stretchable strain sensor was fabricated via inkjet printing of single-walled carbon nanotube (SWCNT) thin films on a stretchable polydimethylsiloxane substrate. The sensor was attached to the metacarpophalangeal (MCP) joint of the hand in 12 healthy male subjects. The subjects placed their hands next to a conventional goniometer and flexed the MCP joint to predetermined angles. A linear relationship was found between the change in the length of the strain sensor and the intended angle of the MCP joint. The fabricated thin films showed high durability during repeated cycling (1,000 cycles) and good sensitivity with a gauge factor of 2.75. This study demonstrates that the newly developed stretchable CNT strain sensor can be used for effectively measuring MCP joint angles. This sensor may also be useful for the analysis of complex and dynamic hand motions that are difficult to measure using a conventional goniometer.

Authors+Show Affiliations

Department of Orthopaedic Surgery, Kangwon National University College of Medicine, Chuncheon, Korea.Department of Electrical and Computer Engineering, Inter-University Semiconductor Research Center (ISRC), Seoul National University, Seoul, Korea.Department of Electrical and Computer Engineering, Inter-University Semiconductor Research Center (ISRC), Seoul National University, Seoul, Korea.Department of Electrical and Computer Engineering, Inter-University Semiconductor Research Center (ISRC), Seoul National University, Seoul, Korea.Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul, Korea.

Pub Type(s)

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

Language

eng

PubMed ID

31725818

Citation

Park, Jin Woo, et al. "Measurement of Finger Joint Angle Using Stretchable Carbon Nanotube Strain Sensor." PloS One, vol. 14, no. 11, 2019, pp. e0225164.
Park JW, Kim T, Kim D, et al. Measurement of finger joint angle using stretchable carbon nanotube strain sensor. PLoS ONE. 2019;14(11):e0225164.
Park, J. W., Kim, T., Kim, D., Hong, Y., & Gong, H. S. (2019). Measurement of finger joint angle using stretchable carbon nanotube strain sensor. PloS One, 14(11), e0225164. https://doi.org/10.1371/journal.pone.0225164
Park JW, et al. Measurement of Finger Joint Angle Using Stretchable Carbon Nanotube Strain Sensor. PLoS ONE. 2019;14(11):e0225164. PubMed PMID: 31725818.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Measurement of finger joint angle using stretchable carbon nanotube strain sensor. AU - Park,Jin Woo, AU - Kim,Taehoon, AU - Kim,Daesik, AU - Hong,Yongtaek, AU - Gong,Hyun Sik, Y1 - 2019/11/14/ PY - 2019/02/12/received PY - 2019/10/14/accepted PY - 2019/11/15/entrez PY - 2019/11/15/pubmed PY - 2020/3/25/medline SP - e0225164 EP - e0225164 JF - PloS one JO - PLoS ONE VL - 14 IS - 11 N2 - Strain sensors capable of monitoring complex human motions are highly desirable for the development of wearable electronic devices and healthcare monitoring systems. Excellent sensitivity and a wide working range of the sensor material are important requirements for distinguishing dynamic human motion. In this study, a highly stretchable strain sensor was fabricated via inkjet printing of single-walled carbon nanotube (SWCNT) thin films on a stretchable polydimethylsiloxane substrate. The sensor was attached to the metacarpophalangeal (MCP) joint of the hand in 12 healthy male subjects. The subjects placed their hands next to a conventional goniometer and flexed the MCP joint to predetermined angles. A linear relationship was found between the change in the length of the strain sensor and the intended angle of the MCP joint. The fabricated thin films showed high durability during repeated cycling (1,000 cycles) and good sensitivity with a gauge factor of 2.75. This study demonstrates that the newly developed stretchable CNT strain sensor can be used for effectively measuring MCP joint angles. This sensor may also be useful for the analysis of complex and dynamic hand motions that are difficult to measure using a conventional goniometer. SN - 1932-6203 UR - https://www.unboundmedicine.com/medline/citation/31725818/Measurement_of_finger_joint_angle_using_stretchable_carbon_nanotube_strain_sensor_ L2 - http://dx.plos.org/10.1371/journal.pone.0225164 DB - PRIME DP - Unbound Medicine ER -