期刊
ACS APPLIED MATERIALS & INTERFACES
卷 10, 期 8, 页码 7263-7270出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b17727
关键词
skin-attachable sensors; temperature sensor; bioinspired adhesive; poly(N-isopropylacrylamide); poly(3,4-ethylenedioxythiophene) polystyrene sulfonate-carbon nanotube composite
资金
- National Research Foundation of Korea (NRF) - Korean government (MEST) [NRF-2016R1A2A1A05004935]
In this study, we demonstrate the fabrication of a highly sensitive flexible temperature sensor with a bioinspired octopus-mimicking adhesive. A resistor-type temperature sensor consisting of a composite of poly(N-isopropylacrylamide) (pNI-PAM)-temperature sensitive hydrogel, poly(3,4-ethylenedioxythiophene) polystyrene sulfonate, and carbon nanotubes exhibits a very high thermal sensitivity of 2.6%.degrees C-1 between 25 and 40 degrees C so that the change in skin temperature of 0.5 degrees C can be accurately detected. At the same time, the polydimethylsiloxane adhesive layer of octopus-mimicking rim structure coated with pNIPAM is fabricated through the formation of a single mold by utilizing undercut phenomenon in photolithography. The fabricated sensor shows stable and reproducible detection of skin temperature under repeated attachment/detachment cycles onto skin without any skin irritation for a long time. This work suggests a high potential application of our skin-attachable temperature sensor to wearable devices for medical and health-care monitoring.
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