posted on 2023-08-23, 05:34authored byChen Zhang, Rui Chen, Wenliya Luo, Jincheng Wang, Dongyang Chen, Pengfeng Chen, Sirui Liu, Yu Xie, Wei Zhou, Tao Luo
Paper
is a green and porous material that has been widely used
in flexible pressure sensors due to its flexibility, renewability,
and lightness. However, these sensors are often susceptible to environmental
factors such as moisture and chemicals, leading to degradation or
failure of their reliability for practical applications. Herein, we
present a roll-to-roll lamination strategy for batch fabrication of
paper-based waterproof flexible pressure sensors with good consistency
based on single-walled carbon nanotube (SWCNT) coated tissue paper
pieces. The pieces are sandwiched between poly(ethylene glycol) terephthalate
(PET) films with a hot melt adhesive and screen-printed electrodes,
and the layers are bonded reliably using roll-to-roll lamination.
This process allows for the rapid fabrication of a batch of waterproof,
flexible pressure sensors with high stability over 5000 loading/unloading
cycles, an ultrashort response time of 8 ms, and a wide measurement
range (450 kPa). These features enable our sensor to be utilized for
human physiological signal detection, motion tracking, and drowning
detection. Furthermore, the process also allows for the fabrication
of sensor arrays for spatial pressure mapping and real-time human–machine
interaction, expanding the application field of paper-based pressure
sensors. This proposed batch fabrication strategy greatly enhances
the consistency and reliability of paper-based pressure sensors, demonstrating
endless possibilities for paper-based pressure sensors to be used
for various applications.