Sensing and memorising liquids with polarity-interactive ferroelectric sound oleh Jong Sung Kim, Eui Hyuk Kim, Chanho Park, Gwangmook Kim, Beomjin Jeong, Kang Lib Kim, Seung Won Lee, Ihn Hwang, Hyowon Han, Seokyeong Lee, Wooyoung Shim, June Huh, Cheolmin Park