期刊
JOURNAL OF PHYSICS D-APPLIED PHYSICS
卷 50, 期 7, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6463/50/7/075502
关键词
flexoelectric response; polyvinylidene fluoride (PVDF) films; piezoelectric vibration energy harvesters; polarization frequency response functions
资金
- Inha University Research Grant [INHA-54471]
- Institute for Information & Communication Technology Planning & Evaluation (IITP), Republic of Korea [2017-0-00976-001] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
This study presents an investigation on the measurement of flexoelectric response in beta-phase polyvinylidene fluoride (PVDF) films attached on cantilever beam-based flexible piezoelectric vibration energy harvesters (PVEHs). The flexoelectric response associated with negative strain gradients was simulated through harmonic response analysis by using the finite element method (FEM). The polarization frequency response functions (FRFs) modified by direct flexoelectric effect of PVDF films was experimentally validated by multi-mode FRFs. From quantitative comparisons between experimental observations and simulated estimation of FRFs, it is demonstrated that the direct flexoelectric response can be observed in PVDF films attached on PVEHs.
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