Seonhyoung Kim received his B.S. degree (2015) in Chemistry from Soonchunhyang University and M.S. (2017) in Chemistry from Chung-Ang University. He researched the fabrication of various inorganic/polymer based ferroelectric thin films and characterization of their electrical/mechanical properties in nanoscale using piezoresponse force microscopy. Currently, he is a Ph.D. student in the Department of Robotics Engineering, DGIST. His doctoral research focuses on polymer based flexible piezoelectric micromachined ultrasonic transducer for biological and sensor applications.