title: Hybrid Energy Harvester Consisting of Piezoelectric Fibers with Largely Enhanced 20 V for Wearable and Muscle-Driven Applications.
abstract: We present a polyvinylidene fluoride (PVDF) nanogenerator (NG) with advantages of direct writing and in situ poling via near-field electrospinning (NFES), which is completely location addressable and substrate independent. The maximum output voltage reached 20 V from the three layers piled NGs with serial connections, and the maximum output current can exceed 390 nA with the parallel integration setup. Linear superposition and switching polarity of current and voltage tests were validated by the authentic piezoelectric output. Nanofiber (NF)-based devices with a length ∼5 cm can be easily attached on the human finger under folding-releasing at ∼45°, and the output voltage and current can reach 0.8 V and 30 nA, respectively. This work based on NFs can potentially have a huge impact on harvesting various external sources from mechanical energies.
authors.affiliation: †Department of Mechanical Engineering and ‡Energy Engineering, National Central University, No.300, Jhongda Road, Jhongli District, Taoyuan City 32001, Taiwan, R.O.C.
authors.forename: Yiin-Kuen
authors.initials: YK
authors.lastname: Fuh
authors.affiliation: †Department of Mechanical Engineering and ‡Energy Engineering, National Central University, No.300, Jhongda Road, Jhongli District, Taoyuan City 32001, Taiwan, R.O.C.
authors.forename: Jia-Cheng
authors.initials: JC
authors.lastname: Ye
authors.affiliation: †Department of Mechanical Engineering and ‡Energy Engineering, National Central University, No.300, Jhongda Road, Jhongli District, Taoyuan City 32001, Taiwan, R.O.C.
authors.forename: Po-Chou
authors.initials: PC
authors.lastname: Chen
authors.affiliation: †Department of Mechanical Engineering and ‡Energy Engineering, National Central University, No.300, Jhongda Road, Jhongli District, Taoyuan City 32001, Taiwan, R.O.C.
authors.forename: Hsi-Chun
authors.initials: HC
authors.lastname: Ho
authors.affiliation: †Department of Mechanical Engineering and ‡Energy Engineering, National Central University, No.300, Jhongda Road, Jhongli District, Taoyuan City 32001, Taiwan, R.O.C.
authors.forename: Zih-Ming
authors.initials: ZM
authors.lastname: Huang
mesh_terms: D011211:Electric Power Supplies; D004867:Equipment Design; D005385:Fingers / Q000502:physiology; D006801:Humans; D009068:Movement / Q000502:physiology; D018482:Muscle, Skeletal / Q000502:physiology*; D057139:Nanofibers / Q000737:chemistry / Q000648:ultrastructure; D036103:Nanotechnology / Q000295:instrumentation / Q000379:methods*; D011145:Polyvinyls / Q000737:chemistry; D005465:Fluorocarbon Polymers
chemical_list: D011145:Polyvinyls; C024865:polyvinylidene fluoride; D005465:Fluorocarbon Polymers
keywords: energy harvester; muscle-driven; nanofibers; nanogenerator; near-field electrospinning; polyvinylidene fluoride