期刊
ACS APPLIED MATERIALS & INTERFACES
卷 15, 期 47, 页码 54966-54976出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.3c13714
关键词
capacitive; fiber; pressure sensor; electrode; dielectric layer
Capacitive fiber pressure sensors have been developed to fill the theoretical research gap in the field, providing a reference for the design and development of such sensors. The use of the wet spinning process has allowed for the establishment of a fiber pressure-sensing platform, addressing the specific challenges faced in the design of fiber sensors. The scalability and integration capabilities of 1D electronics have also been leveraged to demonstrate the potential application of multipoint sensors in various fields.
Capacitive pressure sensors play an important role in the field of flexible electronics. Despite significant advances in two-dimensional (2D) soft pressure sensors, one-dimensional (1D) fiber electronics are still struggling. Due to differences in structure, the theoretical research of 2D sensors has difficulty guiding the design of 1D sensors. The multiple response factors of 1D sensors and the capacitive response mechanism have not been explored. Fiber sensors urgently need a tailor-made theoretical research and development path. In this regard, we established a fiber pressure-sensing platform using a coaxial wet spinning process. Aiming at the two problems of the soft electrode modulus and dielectric layer thickness, the conclusions are drawn from three aspects: model analysis, experimental verification, and formula derivation. It makes up some theoretical blanks of capacitive fiber pressure sensors. Through the self-regulation of these two factors without a complex structural design, the sensitivity can be significantly improved. This provides a great reference for the design and development of fiber pressure sensors. Besides, taking advantage of the scalability and easy integration of 1D electronics, multipoint sensors prepared by fibers have verified their application potential in health monitoring, human-machine interface, and motion behavior analysis.
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