Development of a Highly Stretchable Strain Sensor Based on Patterned and Rolled Carbon Nanotubes

Jaeyong Lee, Soonjae Pyo, Eunhwan Jo, Jongbaeg Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper reports a highly stretchable strain sensor consisting of patterned and rolled carbon nanotubes (CNTs) embedded in an elastomer. To form overlapped lines of CNTs on the elastomer, vertically aligned CNTs (VACNTs) are grown on the patterned catalytic sites and rolled out by a roller. In the initial unloaded state, these lines of CNTs are overlapped with each other. Under loading, the flexible substrate is extended, and the overlapped CNT lines are slid and separated, increasing the electrical resistance. The fabricated sensor showed excellent sensing performances including broad sensing range (>500% strain), high sensitivity (gauge factor >28), high repeatability, and durability. In addition, since the shape of the CNT lines determines the resistance through the deformed lines of CNTs under applied strain, the performance of the sensor can be further improved by optimizing the pattern design. Therefore, the sensor would be an attractive candidate for diverse applications of strain sensors.

Original languageEnglish
Title of host publication2019 IEEE 32nd International Conference on Micro Electro Mechanical Systems, MEMS 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages811-814
Number of pages4
ISBN (Electronic)9781728116105
DOIs
Publication statusPublished - 2019 Jan
Event32nd IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2019 - Seoul, Korea, Republic of
Duration: 2019 Jan 272019 Jan 31

Publication series

NameProceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
Volume2019-January
ISSN (Print)1084-6999

Conference

Conference32nd IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2019
CountryKorea, Republic of
CitySeoul
Period19/1/2719/1/31

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanical Engineering
  • Electrical and Electronic Engineering

Cite this

Lee, J., Pyo, S., Jo, E., & Kim, J. (2019). Development of a Highly Stretchable Strain Sensor Based on Patterned and Rolled Carbon Nanotubes. In 2019 IEEE 32nd International Conference on Micro Electro Mechanical Systems, MEMS 2019 (pp. 811-814). [8870709] (Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS); Vol. 2019-January). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/MEMSYS.2019.8870709