期刊
MATERIALS LETTERS
卷 191, 期 -, 页码 189-192出版社
ELSEVIER
DOI: 10.1016/j.matlet.2016.12.066
关键词
Polymers; Piezoelectric materials; Polyvinylidene fluoride; Nanofibers; High sensitivity; Piezoresponse force microscopy
资金
- Grants from the National Natural Science Foundation of China [61474071, 61531166006]
- National Basic Research Program (973 Program) [2015CB352106]
We report piezoresponse force microscopy (PFM) studies of single electrospun polyvinylidene fluoride (PVDF) nanofibers on the Pt/Ti electrode substrate. The out-of-plane piezoelectric response is much stronger than the in-plane, which is dependent on the parameters of the electrospinning technique. Further, the local polarization switching of the thin nanofibers can be quantitatively characterized by the amplitude-voltage butterfly loop and phase-voltage hysteresis loop. The piezoelectric coefficient (d(33)) of the nanofibers is diameter-dependent. The thinnest nanofiber studied here is 30 nm and has the maximal vertical bar d(33)vertical bar of 38.5 pm V-1. The excellent piezoelectric properties of these low-dimensional nano fibers can facilitate the development in sensing and energy harvesting applications. (C) 2016 Elsevier B.V. All rights reserved.
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