Dr. Ragu Sasikumar received his B.S. and M.S. (Chemistry) degrees from Madurai Kamaraj University, India, and the Ph.D. (Chemical Engineering) degree from the National Taipei University of Technology, Taipei, Taiwan. He was a Postdoctoral Research Fellow and Research Assistant Professor at the Department of Molecular Science and Engineering, National Taipei University of Technology, Taipei, Taiwan. Now he is a Postdoctoral Research Fellow of the School of Mechatronics Engineering, Korea University of Technology and Education, Cheonan, South Korea. His research interest includes hybrid nanocomposites, polymer-doped carbon-based nanomaterials, electrochemical and piezoelectric wearable sensors, and energy storage devices.