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.

(Paper: Meng Gao, Lihong Li, Wenbo Li, Haihua Zhou, Yanlin Song. Direct Writing of Patterned, Lead‐Free Nanowire Aligned Flexible Piezoelectric Device. Advanced Science, 2016.3, 1600120)