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Poly(vinylidene fluoride-trifluoroethylene) (PVDF-TrFE) is a promising ferroelectric polymer for flexible electronics and energy-harvesting devices, owing to its high piezoelectric coefficient and mechanical flexibility. Here, we report that electrohydrodynamic instability induces the formation of closely packed nanostructures on PVDF-TrFE thin film.
Intriguingly, the strong electric field used in the fabrication process drives the polymeric fluid of PVDF-TrFE upwards to form the surface structures, facilitating molecular dipole alignment and crystalline ordering. This effect contributes to improved crystal alignment, as confirmed by enhanced X-ray diffraction and Raman characteristic peaks. The nanostructured PVDF-TrFE films exhibit enhanced dielectric properties including permittivity, dielectric loss, and ferroelectric polarization.
Notably, P-E loop measurements showed a larger remnant polarization and higher saturation polarization in the nanostructured PVDF-TrFE films, indicating improved ferroelectric behavior. Our results suggest that the electrohydrodynamic instability provides a simple but effective route to simultaneously tailor the surface morphology, crystalline phase, and electrical performance of PVDF-TrFE films.*표시는 필수 입력사항입니다.
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도서위치안내: 정기간행물실(524호) / 서가번호: 국내13
2021년 이전 정기간행물은 온라인 신청(원문 구축 자료는 원문 이용)
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