Ultrasensitive Strain Sensor Based on Separation of Overlapped Carbon Nanotubes
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- Jaeyong Lee
- School of Mechanical Engineering Yonsei University 50‐Yonsei Ro Seodaemun‐gu Seoul 03722 Republic of Korea
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- Soonjae Pyo
- School of Mechanical Engineering Yonsei University 50‐Yonsei Ro Seodaemun‐gu Seoul 03722 Republic of Korea
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- Dae‐Sung Kwon
- School of Mechanical Engineering Yonsei University 50‐Yonsei Ro Seodaemun‐gu Seoul 03722 Republic of Korea
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- Eunhwan Jo
- School of Mechanical Engineering Yonsei University 50‐Yonsei Ro Seodaemun‐gu Seoul 03722 Republic of Korea
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- Wondo Kim
- School of Mechanical Engineering Yonsei University 50‐Yonsei Ro Seodaemun‐gu Seoul 03722 Republic of Korea
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- Jongbaeg Kim
- School of Mechanical Engineering Yonsei University 50‐Yonsei Ro Seodaemun‐gu Seoul 03722 Republic of Korea
書誌事項
- 公開日
- 2019-02-12
- 権利情報
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- http://onlinelibrary.wiley.com/termsAndConditions#vor
- DOI
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- 10.1002/smll.201805120
- 公開者
- Wiley
この論文をさがす
説明
<jats:title>Abstract</jats:title><jats:p>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.</jats:p>
収録刊行物
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- Small
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Small 15 (12), 2019-02-12
Wiley