TY - GEN
T1 - A new strategy for balancing sensitivity and stretchability in strain sensor with well-controlled high-density cracks
AU - Xin, Yangyang
AU - Zhou, Jian
AU - Xu, Xuezhu
AU - Lubineau, Gilles
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The research reported in this paper was supported by funding from the King Abdullah University of Science and Technology (KAUST). The authors are grateful to the KAUST for its support.
PY - 2020/1/1
Y1 - 2020/1/1
N2 - With the increasing demands in new application such as wearable electronics, human health monitoring, and soft robotics, high-performance strain sensors with high sensitivity, and high stretchability, with the ability to measure both tensile and compressive strain, are highly desirable. However, based on the reported studies, it is difficult to get a strain sensor with both high sensitivity and high stretchability. Also, the response of the many strain sensor is nonlinear which makes their practical application difficult. Here, we introduce a strategy in which a carbon nanotube paper was embedded into an elastomeric substrate with laser-engraved technology to well control the crack density. Then the pre-cracks were changed into through-thickness cracks by a roll-to-roll process. This sensor can maintain high sensitivity with good stretchability (with a GA of over 4.2 × 104 at 150% strain which is three times greater than that of no pre-cracked sensor). By changing the sensor's substrate to a thermoplastic polymer, and applying a stretching-stress-releasing process, we are then capable of designing a highly-sensitive compressive strain sensor.
AB - With the increasing demands in new application such as wearable electronics, human health monitoring, and soft robotics, high-performance strain sensors with high sensitivity, and high stretchability, with the ability to measure both tensile and compressive strain, are highly desirable. However, based on the reported studies, it is difficult to get a strain sensor with both high sensitivity and high stretchability. Also, the response of the many strain sensor is nonlinear which makes their practical application difficult. Here, we introduce a strategy in which a carbon nanotube paper was embedded into an elastomeric substrate with laser-engraved technology to well control the crack density. Then the pre-cracks were changed into through-thickness cracks by a roll-to-roll process. This sensor can maintain high sensitivity with good stretchability (with a GA of over 4.2 × 104 at 150% strain which is three times greater than that of no pre-cracked sensor). By changing the sensor's substrate to a thermoplastic polymer, and applying a stretching-stress-releasing process, we are then capable of designing a highly-sensitive compressive strain sensor.
UR - http://hdl.handle.net/10754/665261
UR - http://www.scopus.com/inward/record.url?scp=85084160755&partnerID=8YFLogxK
M3 - Conference contribution
SN - 9781510896932
BT - 18th European Conference on Composite Materials, ECCM 2018
PB - Applied Mechanics Laboratory
ER -
