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Ultrasensitive Strain Sensor Based on Separation of Overlapped Carbon Nanotubes.
Small 2019; 15(12):e1805120S

Abstract

Although there have been remarkable improvements in stretchable strain sensors, the development of strain sensors with scalable fabrication techniques and which both high sensitivity and stretchability simultaneously is still challenging. In this work, a stretchable strain sensor based on overlapped carbon nanotube (CNT) bundles coupled with a silicone elastomer is presented. The strain sensor with overlapped CNTs is prepared by synthesizing line-patterned vertically aligned CNT bundles and rolling and transferring them to the silicone elastomer. With the sliding and disconnection of the overlapped CNTs, the strain sensor performs excellently with a broad sensing range (≥145% strain), ultrahigh sensitivity (gauge factor of 42 300 at a strain of 125-145%), high repeatability, and durability. The performance of the sensor is also tunable by controlling the overlapped area of CNT bundles. Detailed mechanisms of the sensor and its applications in human motion detection are also further investigated. With the novel structure and mechanism, the sensor can detect a wide range of strains with high sensitivity, demonstrating the potential for numerous applications including wearable healthcare devices.

Authors+Show Affiliations

School of Mechanical Engineering, Yonsei University, 50-Yonsei Ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.School of Mechanical Engineering, Yonsei University, 50-Yonsei Ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.School of Mechanical Engineering, Yonsei University, 50-Yonsei Ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.School of Mechanical Engineering, Yonsei University, 50-Yonsei Ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.School of Mechanical Engineering, Yonsei University, 50-Yonsei Ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.School of Mechanical Engineering, Yonsei University, 50-Yonsei Ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30748123

Citation

Lee, Jaeyong, et al. "Ultrasensitive Strain Sensor Based On Separation of Overlapped Carbon Nanotubes." Small (Weinheim an Der Bergstrasse, Germany), vol. 15, no. 12, 2019, pp. e1805120.
Lee J, Pyo S, Kwon DS, et al. Ultrasensitive Strain Sensor Based on Separation of Overlapped Carbon Nanotubes. Small. 2019;15(12):e1805120.
Lee, J., Pyo, S., Kwon, D. S., Jo, E., Kim, W., & Kim, J. (2019). Ultrasensitive Strain Sensor Based on Separation of Overlapped Carbon Nanotubes. Small (Weinheim an Der Bergstrasse, Germany), 15(12), pp. e1805120. doi:10.1002/smll.201805120.
Lee J, et al. Ultrasensitive Strain Sensor Based On Separation of Overlapped Carbon Nanotubes. Small. 2019;15(12):e1805120. PubMed PMID: 30748123.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Ultrasensitive Strain Sensor Based on Separation of Overlapped Carbon Nanotubes. AU - Lee,Jaeyong, AU - Pyo,Soonjae, AU - Kwon,Dae-Sung, AU - Jo,Eunhwan, AU - Kim,Wondo, AU - Kim,Jongbaeg, Y1 - 2019/02/12/ PY - 2018/12/03/received PY - 2019/01/14/revised PY - 2019/2/13/pubmed PY - 2019/2/13/medline PY - 2019/2/13/entrez KW - carbon nanotubes KW - human motion detections KW - strain sensors KW - stretchable electronics SP - e1805120 EP - e1805120 JF - Small (Weinheim an der Bergstrasse, Germany) JO - Small VL - 15 IS - 12 N2 - Although there have been remarkable improvements in stretchable strain sensors, the development of strain sensors with scalable fabrication techniques and which both high sensitivity and stretchability simultaneously is still challenging. In this work, a stretchable strain sensor based on overlapped carbon nanotube (CNT) bundles coupled with a silicone elastomer is presented. The strain sensor with overlapped CNTs is prepared by synthesizing line-patterned vertically aligned CNT bundles and rolling and transferring them to the silicone elastomer. With the sliding and disconnection of the overlapped CNTs, the strain sensor performs excellently with a broad sensing range (≥145% strain), ultrahigh sensitivity (gauge factor of 42 300 at a strain of 125-145%), high repeatability, and durability. The performance of the sensor is also tunable by controlling the overlapped area of CNT bundles. Detailed mechanisms of the sensor and its applications in human motion detection are also further investigated. With the novel structure and mechanism, the sensor can detect a wide range of strains with high sensitivity, demonstrating the potential for numerous applications including wearable healthcare devices. SN - 1613-6829 UR - https://www.unboundmedicine.com/medline/citation/30748123/Ultrasensitive_Strain_Sensor_Based_on_Separation_of_Overlapped_Carbon_Nanotubes_ L2 - https://doi.org/10.1002/smll.201805120 DB - PRIME DP - Unbound Medicine ER -