posted on 2022-01-27, 13:42authored byBanghan Liu, Youquan Zhou, Linhong Chen, Yue Feng, Mingxian Liu
Flexible
sensors with high sensitivity and reproducibility have
critical applications in various industrial fields. However, current
sensors have not yet been able to respond to diverse signal changes
in the environment due to their poor stability, weak conductivity,
high cost, and time-consuming integration process. Herein, we used
dip-coating technology to prepare multifunctional rubber flexible
sensors which were based on the Chinese ink carbon nanoparticle (ICN)
and water-based glue. The prepared flexible sensors have the ability
to sensitively detect temperature, humidity, and strain signals. The
conductive ICN can well adhere on the elastic substrate (natural rubber
latex glove), which gives the flexible sensors excellent structural
stability even after 500 cycles. The strain response and recovery
time of the flexible sensors are 132.8 and 133.8 ms, respectively.
The flexible sensors can sensitively detect tiny pressure, human body
movements, pronunciation, and human facial expression. Moreover, the
prepared high-performance flexible sensors can also be used as temperature
and humidity sensors, which displayed a good linear relationship between
resistance change and the external signals. This work developed a
simple, green, high-efficiency, and low-cost flexible sensors, which
shows promising potential in wearable electronic devices for detection
of strain, humidity, and temperature.