YANG-FANG CHEN2018-09-102018-09-102009http://www.scopus.com/inward/record.url?eid=2-s2.0-64149114873&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/346796Direct observation of two-step polarization reversal by an opposite field in a substrate-free piezoelectric thin sheetjournal article10.1063/1.31072642-s2.0-64149114873WOS:000264888500001