Hong Goo Yeo earned his Ph. D degree in Department of Materials Science and Engineering at The Pennsylvania State University in 2017. His research focuses on processing and properties of the piezoelectric thin films with flexible metal substrates for piezoelectric MEMS applications. He is currently a Postdoctoral Researcher in the DGIST-ETH Microrobot Research Center (DEMRC) at Daegu Gyeongbuk Institute of Science and Technology (DGIST).