By Ronnie Varghese
Ronnie Varghese received his B.E. in Chemical Engineering from Birla Institute of Technology and Science, Pilani, India in ’92 and his M.S. in Chemical Engineering from Arizona State University in ’95. After undergraduate studies and prior to coming to the US, he worked for a year as a Petrochemical Separations Process engineer. Following his M.S. and until joining Dr. Priya’s research group in‘09, he has worked in Semiconductor processing at various semiconductor and optical technology companies around the US.
As a PhD student in the MSE department and this research group, he is conducting research on 3-D Piezo-MEMS devices fabrication for Energy Harvesting and multi-ferroic thin film process and device development. These MEMS structures have to harvest energy from vibrations at low ambient frequencies. The Multi-ferroic devices utilize stacks of magnetostrictive and piezoelectric thin films to couple and obtain a magnetoelectric effect.
In addition, he is investigating non-destructive thin film metrology schemes (like Spectroscopic Ellipsometry) for characterization of Piezoelectric and Magnetoelectric thin films. Such studies will help build relationships between optical properties and the morphological and electrical properties of these films.