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Effects of carbonization temperature and substrate concentration on the sensing performance of flexible pressure sensor
Applied Physics A ( IF 1.784 ) Pub Date : 2019-12-16 , DOI: 10.1007/s00339-019-3216-2
Shengnan Chang, Jin Li, Yin He, Hao Liu

Flexible strain/pressure sensors play a vital role in flexible wearable electronics. In recent years, carbonized fabric-based flexible strain/pressure sensors are emerging due to their excellent flexibility and sensing performance, as well as facile preparation and low cost. Sensing performance is a key indicator for evaluating strain/pressure sensors. However, the study on the process variables affecting the sensing performance of carbonized fabric-based strain/pressure sensors is lacking to date. In this paper, a flexible pressure sensor based on carbonized fabric/thermoplastic polyurethane was prepared by simple carbonization. By setting different carbonization temperatures (600–1000 °C) and flexible substrate solution concentrations (4–10%), their influence on the sensor sensing performance was explored and a series of characterizations and tests were implemented under different process conditions. The results showed that the carbonization temperature and substrate concentration greatly influence the sensing performance of the sensor. Furthermore, the flexible pressure sensor using carbonized fabric carbonized at 800–900 °C and substrate solution with 6% concentration possesses superior sensing performance.
更新日期:2019-12-17

 

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