A flexible and implantable piezoelectric generator harvesting energy from the pulsation of ascending aorta: in vitro and in vivo studies - Hao Zhang; Zhang, Xiao-Sheng; Cheng, Xiao Liang; Yang Liu; Han, Mengdi; Xue, Xiang; Wang, Shuaifei; Fan Yang; Smitha, AS; Zhang, Haixia (Nano Energy, 2015)