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Fabrication of highly-sensitive capacitive pressure sensors with electrospun polymer nanofibers

Title
Fabrication of highly-sensitive capacitive pressure sensors with electrospun polymer nanofibers
Author
오제훈
Keywords
HUMAN-MACHINE INTERFACES; FORCE SENSOR; SKIN; ELECTRONICS; SYSTEM; RUBBER; FILM
Issue Date
2017-08
Publisher
AMER INST PHYSICS
Citation
APPLIED PHYSICS LETTERS, v. 111, No. 7, Article no. 073502
Abstract
Highly sensitive capacitive pressure sensors with poly(vinylidenefluoride-co-trifluoroethylene) (P(VDF-TrFE)) dielectric layers were prepared. The dielectric layers were directly produced by electrospinning P(VDF-TrFE) nanofibers for various spinning times. A longer spinning time enhanced the deformability of the electrospun P(VDF-TrFE) layers, resulting in higher sensitivity owing to larger changes in the deformation of the dielectric layer. One of the capacitive pressure sensors showed a high sensitivity of 2.81 kPa(-1) at a pressure <= 0.12 kPa, a good response time of 42 ms, and small hysteresis. The sensitivity of the sensor was five times higher than that of a typical capacitive pressure sensor. The fabricated pressure sensor could detect a tiny water droplet as light as 7mg. It is expected that the electrospun P(VDF-TrFE) nanofibers can be used as sensing materials for highly sensitive pressure sensors in wearable electronics applications. Published by AIP Publishing.
URI
https://aip.scitation.org/doi/abs/10.1063/1.4998465https://repository.hanyang.ac.kr/handle/20.500.11754/72280
ISSN
0003-6951; 1077-3118
DOI
10.1063/1.4998465
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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