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.

Abstract
1. 서 론
2. 실험 방법
3. 결과 및 고찰
4. 결 론
References
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• 이동성(성균관대학교 물리화학융합협동과정) | Dongseong Lee (Interdisciplinary Course of Physics and Chemistry, Sungkyunkwan University, Suwon 16419, Republic of Korea)
• 박현제(전주대학교 과학교육과) | Hyunje Park (Department of Science Education, Jeonju University, Jeonju 55069, Republic of Korea) Corresponding author