Weileun Fangwas born in Taipei, Taiwan. He received his Ph.D. degree from Carnegie Mellon University in 1995. His doctoral research focused on the determining of the mechanical properties of thin films using micromachined structures. In 1995, he worked as a postdoctoral research at Synchrotron Radiation Research Center, Taiwan. He joined the Power Mechanical Engineering Department at the National Tsing Hua University (Taiwan) in 1996, where he is now a Chair Professor as well as a faculty of NEMS Institute. In 1999, he was with Prof. Y.-C. Tai at California Inst. Tech. as a visiting associate. He became the IEEE Fellow in 2015 to recognize his contribution in MEMS area. His research interests include MEMS with emphasis on micro fabrication/packaging technologies, CMOS MEMS, CNT MEMS, micro optical systems, micro sensors and actuators, and characterization of thin film mechanical properties.He is now the Chief Editor of JMM, the Associate Editor of IEEE Sensors Journal, and the Board Member of the IEEE Transactions on Device and Materials Reliability, and the eBook of IoP (Institute of Physics, UK) Publishing.He served as the member of ISC (International steering committee) of Transducers in2009-2017,and the ISC chair in 2017-2019. He also served as the General Chair of Transducers Conference in 2017. He was the TPC of IEEE MEMS and EPC of Transducers for many years, and the Program Chair of IEEE Sensors Conference in 2012. He served as the Chief Delegate of Taiwan for the World Micromachine Summit (MMS)in 2008-2012, and the General Chair of MMS in 2012. Prof. Fang has close collaboration with MEMS industries andis now the VP of MEMS and Sensors Committee of SEMI Taiwan.