title: Direct Writing of Patterned, Lead-Free Nanowire Aligned Flexible Piezoelectric Device.
abstract: A high-performance flexible piezoelectric nanogenerator (PNG)is fabricated by a direct writing method, which acquires both patterned piezoelectric structure and aligned piezoelectric nanowires simultaneously. The voltage output of the as-prepared PNG is nearly 400% compared with that of the traditional spin-coated device due to the effective utilization of stress. This facile printing approach provides an efficient strategy for significant improvement of the piezoresponse.
authors.affiliation: Key Laboratory of Green Printing Institute of Chemistry Chinese Academy of Sciences Beijing 100190  P. R. China; School of Chemistry and Chemical Engineering University of Chinese Academy of Sciences Beijing 100049 P. R. China.
authors.forename: Meng
authors.initials: M
authors.lastname: Gao
authors.affiliation: Key Laboratory of Green Printing Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China.
authors.forename: Lihong
authors.initials: L
authors.lastname: Li
authors.affiliation: Key Laboratory of Green Printing Institute of Chemistry Chinese Academy of Sciences Beijing 100190  P. R. China; School of Chemistry and Chemical Engineering University of Chinese Academy of Sciences Beijing 100049 P. R. China.
authors.forename: Wenbo
authors.initials: W
authors.lastname: Li
authors.affiliation: Key Laboratory of Green Printing Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China.
authors.forename: Haihua
authors.initials: H
authors.lastname: Zhou
authors.affiliation: Key Laboratory of Green Printing Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China.
authors.forename: Yanlin
authors.initials: Y
authors.lastname: Song
keywords: alignment; alkaline niobate nanowires; direct writing; micropattern; piezoelectric nanogenerator