Long Yu, Fan Wu, Jiarong Zhang, Ya’nan Zhao, Yi’na Yang, Tianran Zhao, Chunna Yu, Chang Zhao and Guangjian Xing*,
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引用次数: 0
Abstract
The conductive hydrogels used for fabricating flexible piezoresistive sensors encounter challenges related to diminished sensing performance due to limited mechanical properties. This study presents the development of a PAA/PEDOT:PSS/Nb2CTX hydrogel through a straightforward polymerization method. The hydrogel features a cross-linked dual network structure abundant in hydrogen bonds, which imparts exceptional mechanical properties, including stable stretchability, good compressibility, strong adhesion, superior self-healing capabilities, and antifreezing characteristics. With a high conductivity of 165.54 S m–1, the piezoresistive sensor based on this hydrogel demonstrates remarkable compressive sensing capabilities, including a low detection limit, a high sensitivity of 9.81, a rapid response/recovery time of merely 200 ms, a wide sensing range, and cyclic stability exceeding 2000 cycles. This sensor effectively detects a variety of human physiological activities, ranging from large joint movements to subtle finger bending and swallowing. Notably, the integration of Nb2CTX nanosheets, which possess photothermal conversion characteristics, allows the hydrogel to heat up quickly in response to near-infrared light, rendering it suitable for photothermal therapy. The combination of enhanced sensing performance and photothermal treatment potential in this sensor indicates promising applications in human health monitoring and adjunct therapy.
期刊介绍:
ACS Applied Polymer Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics, and biology relevant to applications of polymers.
The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates fundamental knowledge in the areas of materials, engineering, physics, bioscience, polymer science and chemistry into important polymer applications. The journal is specifically interested in work that addresses relationships among structure, processing, morphology, chemistry, properties, and function as well as work that provide insights into mechanisms critical to the performance of the polymer for applications.