Browsing by Author "Han, Songjia"

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Enhancement of Electroactive Phases of PVDF by Mixing SiC Nanowires for Pressure Sensing
(2016)
Huang, Jiefang
;
Han, Songjia
;
Chen, Hui-Jiuan
;
Luo, Zhenhua
;
Shieh, Han-Ping D.
Poly(vinylidene fluoride) (PVDF) is one of the ideal materials for wearable pressure sensing owing to its excellent piezoelectric property, good flexibility, and easy fabrication processing. In this work, we mixed PVDF matrix with silicon carbide (SiC) nanowires acting as an efficient nucleating agent to transform the non-polar a phase to polar beta and gamma phases to improve the crystallinity of electroactive phases and enhance the piezoelectricity of PVDF thin film.
Investigation of PVDF-TrFE composite with nanofillers for sensitivity improvement
(2016-07-01)
Chen, Hui-jiuan
;
Han, Songjia
;
Liu, Chuan
;
Luo, Zhenhua
;
Shieh, Han-Ping D.
Polyvinylidene fluoride-trifluoroethylene (PVDF-TrFE) is a good candidate for wearable tactile sensing application, owing to its flexibility and easy processing. In this paper, we studied the effect of mixing silver nano-fillers with different morphologies into PVDF-TrFE to improve the extent of beta phase crystallization and the piezoelectric performance. After blending, the piezoelectric responding voltage of the composite was increased by a factor of more than three. This improvement results from the PVDF-TrFE chain arranges differently onto the nano-fillers with different morphologies, thus affects the crystallization. (C) 2016 Elsevier B.V. All rights reserved.