TY - GEN
T1 - Development of a Highly Stretchable Strain Sensor Based on Patterned and Rolled Carbon Nanotubes
AU - Lee, Jaeyong
AU - Pyo, Soonjae
AU - Jo, Eunhwan
AU - Kim, Jongbaeg
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/1
Y1 - 2019/1
N2 - 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.
AB - 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.
UR - https://www.scopus.com/pages/publications/85074362385
U2 - 10.1109/MEMSYS.2019.8870709
DO - 10.1109/MEMSYS.2019.8870709
M3 - Conference contribution
AN - SCOPUS:85074362385
T3 - Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
SP - 811
EP - 814
BT - 2019 IEEE 32nd International Conference on Micro Electro Mechanical Systems, MEMS 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 32nd IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2019
Y2 - 27 January 2019 through 31 January 2019
ER -