Ultrasensitive Strain Sensor Based on Separation of Overlapped Carbon Nanotubes

Jaeyong Lee, Soonjae Pyo, Dae Sung Kwon, Eunhwan Jo, Wondo Kim, Jongbaeg Kim

Research output: Contribution to journalArticle

8 Citations (Scopus)

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.

Original languageEnglish
Article number1805120
JournalSmall
Volume15
Issue number12
DOIs
Publication statusPublished - 2019 Mar 22

Fingerprint

Carbon Nanotubes
Silicone Elastomers
Carbon nanotubes
Sensors
Elastomers
Silicones
Delivery of Health Care
Equipment and Supplies
Gages
Durability
Fabrication

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Biomaterials
  • Chemistry(all)
  • Materials Science(all)

Cite this

Lee, Jaeyong ; Pyo, Soonjae ; Kwon, Dae Sung ; Jo, Eunhwan ; Kim, Wondo ; Kim, Jongbaeg. / Ultrasensitive Strain Sensor Based on Separation of Overlapped Carbon Nanotubes. In: Small. 2019 ; Vol. 15, No. 12.
@article{3936aab4ad0d461d9d823b6902013cda,
title = "Ultrasensitive Strain Sensor Based on Separation of Overlapped Carbon Nanotubes",
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.",
author = "Jaeyong Lee and Soonjae Pyo and Kwon, {Dae Sung} and Eunhwan Jo and Wondo Kim and Jongbaeg Kim",
year = "2019",
month = "3",
day = "22",
doi = "10.1002/smll.201805120",
language = "English",
volume = "15",
journal = "Small",
issn = "1613-6810",
publisher = "Wiley-VCH Verlag",
number = "12",

}

Ultrasensitive Strain Sensor Based on Separation of Overlapped Carbon Nanotubes. / Lee, Jaeyong; Pyo, Soonjae; Kwon, Dae Sung; Jo, Eunhwan; Kim, Wondo; Kim, Jongbaeg.

In: Small, Vol. 15, No. 12, 1805120, 22.03.2019.

Research output: Contribution to journalArticle

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

PY - 2019/3/22

Y1 - 2019/3/22

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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85061453750&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85061453750&partnerID=8YFLogxK

U2 - 10.1002/smll.201805120

DO - 10.1002/smll.201805120

M3 - Article

C2 - 30748123

AN - SCOPUS:85061453750

VL - 15

JO - Small

JF - Small

SN - 1613-6810

IS - 12

M1 - 1805120

ER -