TY - JOUR
T1 - Highly stretchable and sensitive strain sensors based on carbon nanotube-elastomer nanocomposites
T2 - The effect of environmental factors on strain sensing performance
AU - Nankali, Mohammad
AU - Nouri, Norouz Mohammad
AU - Navidbakhsh, Mahdi
AU - Geran Malek, Nima
AU - Amindehghan, Mohammad Amin
AU - Montazeri Shahtoori, Abdolsamad
AU - Karimi, Marita
AU - Amjadi, Morteza
PY - 2020/5/14
Y1 - 2020/5/14
N2 - There is an increasing demand for stretchable and wearable strain sensors because of their potential in human motion detection, healthcare monitoring, and soft robotics. Besides their high stretchability and high sensitivity, the durability of wearable strain sensors under variations in atmospheric conditions is another important consideration for their practical use. To date, however, little attention has been given to the impact of environmental factors on the sensing performance of stretchable strain sensors. Herein, we present highly stretchable and sensitive strain sensors based on carbon nanotube-polydimethylsiloxane nanocomposite films and systematically investigate the effect of environmental parameters (i.e., changes in temperature and relative humidity) on their strain sensing characteristics. The strain sensors possess a maximum gauge factor of around 10, stretchability of up to 60%, and response time of 204 ms with good reliability and low hysteresis. Our detailed study on the long-term exposure of strain sensors to controlled temperature and relative humidity levels reveals their significant influence on the strain sensing behavior, particularly temperature fluctuations. As application demonstrations, the stretchable strain sensors are utilized to track the deformation state of an air-inflated balloon and human body movements for healthcare monitoring.
AB - There is an increasing demand for stretchable and wearable strain sensors because of their potential in human motion detection, healthcare monitoring, and soft robotics. Besides their high stretchability and high sensitivity, the durability of wearable strain sensors under variations in atmospheric conditions is another important consideration for their practical use. To date, however, little attention has been given to the impact of environmental factors on the sensing performance of stretchable strain sensors. Herein, we present highly stretchable and sensitive strain sensors based on carbon nanotube-polydimethylsiloxane nanocomposite films and systematically investigate the effect of environmental parameters (i.e., changes in temperature and relative humidity) on their strain sensing characteristics. The strain sensors possess a maximum gauge factor of around 10, stretchability of up to 60%, and response time of 204 ms with good reliability and low hysteresis. Our detailed study on the long-term exposure of strain sensors to controlled temperature and relative humidity levels reveals their significant influence on the strain sensing behavior, particularly temperature fluctuations. As application demonstrations, the stretchable strain sensors are utilized to track the deformation state of an air-inflated balloon and human body movements for healthcare monitoring.
UR - http://www.scopus.com/inward/record.url?scp=85087108904&partnerID=8YFLogxK
U2 - 10.1039/d0tc00373e
DO - 10.1039/d0tc00373e
M3 - Article
AN - SCOPUS:85087108904
SN - 2050-7534
VL - 8
SP - 6185
EP - 6195
JO - Journal of Materials Chemistry C
JF - Journal of Materials Chemistry C
IS - 18
ER -