Micropatterning: Direct Writing of Patterned, Lead‐Free Nanowire Aligned Flexible Piezoelectric Device (Adv. Sci. 8/2016)

A high-performance flexible piezoelectric nanogenerator with both patterned piezoelectric structure and aligned piezoelectric nanowires is fabricated by Yanlin Song and co-workers via a direct writing method in article 1600120. By modulating the ink composition and the rheological behavior, the voltage output of the (Na,K)NbO3 nanowires based direct-written device is nearly 400% compared with that of the traditional spin-coated one due to the effectively utilizing of stress. The approach provides an efficient way to acquire piezoelectric devices with high performance for self-powered sensors and portable personal electronics.