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Inside Cover: Electrohydrodynamically Printed, Flexible Energy Harvester Using In Situ Poled Piezoelectric Nanofibers (Energy Technol. 4/2015)
Author(s) -
Ding Yajiang,
Duan Yongqing,
Huang YongAn
Publication year - 2015
Publication title -
energy technology
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201590009
Subject(s) - materials science , electrohydrodynamics , piezoelectricity , energy harvesting , mechanical energy , electric potential energy , voltage , fabrication , optoelectronics , energy transformation , nanofiber , electric field , nanotechnology , energy (signal processing) , composite material , mechanical engineering , electrical engineering , engineering , power (physics) , statistics , mathematics , medicine , physics , alternative medicine , quantum mechanics , pathology , thermodynamics
Bend and Stretch: The cover picture shows a highly bendable/stretchable energy harvester being fabricated by using an electrohydrodynamic direct‐writing process. It utilizes the stable high electrostatic field and tunable mechanical drawing force to produce piezoelectric PVDF nanofibers with β‐phase formation through in situ electrical poling and mechanical stretching, as described in the Full Paper on page 351 from University of Science and Technology, Wuhan, China. The bendable/stretchable energy harvesters can generate electricity under bending, stretching, and pressure, and the current and voltage relate linearly to the frequency and amplitude of deformation as well as the number of fibers. Additionally, the vertical pressure enables the stretchable energy harvesters to generate electrical energy stably, even when the energy harvesters are in different stretching states. The electrohydrodynamic direct‐writing fabrication process paves the way for a cost‐effective and high‐efficiency manufacturing pathway in wearable, bio‐integrated electronics with large deformability.