TY - GEN
T1 - Transparent, Anti-Freezing Hydrogels for Ultrasensitive Temperature and Strain Sensor Based on A Thin-Film Structure
AU - Wu, Zixuan
AU - Ding, Haojun
AU - Wei, Yaoming
AU - Tao, Kai
AU - Wu, Jin
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021/4/25
Y1 - 2021/4/25
N2 - A thin film sandwich structure (TFSS) was designed to improve the wearing comfort, sensing performance, immunity to humidity, and miniaturization of the hydrogel sensor synchronously. The TFSS sensor was fabricated using the layer-by-layer spin-coating technology with a thickness of only 12.15\ \mu\mathrm{m} for the LiBr-percolated hydrogel layer. Benefiting from the ultrathin device structure, the low thermal capacity of LiBr solution, new capacitance measurement mode and ionic transport manner, the TFSS thermistor displays unprecedented sensitivity of 24.54%/°C, ultrafast response time (0.19 s), recovery time (0.08 s), high resolution (0.8 °C) and a broad detection range (-30∼96 °C). The sensitivity of our temperature sensor is one order of magnitude higher than those of state-of-the-art stretchable temperature sensors. In addition to temperature, the tensile strain can also be selectively detected with distinguishable signals, endowing the bimodal sensor with multifunctional sensing capability.
AB - A thin film sandwich structure (TFSS) was designed to improve the wearing comfort, sensing performance, immunity to humidity, and miniaturization of the hydrogel sensor synchronously. The TFSS sensor was fabricated using the layer-by-layer spin-coating technology with a thickness of only 12.15\ \mu\mathrm{m} for the LiBr-percolated hydrogel layer. Benefiting from the ultrathin device structure, the low thermal capacity of LiBr solution, new capacitance measurement mode and ionic transport manner, the TFSS thermistor displays unprecedented sensitivity of 24.54%/°C, ultrafast response time (0.19 s), recovery time (0.08 s), high resolution (0.8 °C) and a broad detection range (-30∼96 °C). The sensitivity of our temperature sensor is one order of magnitude higher than those of state-of-the-art stretchable temperature sensors. In addition to temperature, the tensile strain can also be selectively detected with distinguishable signals, endowing the bimodal sensor with multifunctional sensing capability.
UR - https://www.scopus.com/pages/publications/85113313763
U2 - 10.1109/NEMS51815.2021.9451344
DO - 10.1109/NEMS51815.2021.9451344
M3 - 会议稿件
AN - SCOPUS:85113313763
T3 - Proceedings of the 16th Annual IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2021
SP - 303
EP - 306
BT - Proceedings of the 16th Annual IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 16th Annual IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2021
Y2 - 25 April 2021 through 29 April 2021
ER -