High Efficient Piezoelectric Energy Scavenging using 0.7Pb(Mg2/3Nb1/3)O3-0.3PbTiO3 Single Crystal - Kim Hyungchan; Song, Hyun - Cheol; Jeong, Dae - Yong; Ju, Byeong Kwon; KANG, CHONG YUN; YOON, SEOK JIN