The talk was presented on March 20, 2020, where the design, fabrication, and testing of microelectromechanical systems (MEMS), metal-contact, micro-switches and the issues associated with performance and reliability were discussed. Specifically, unstable electrical contact resistance reduces micro-switch performance and severely degrades device reliability resulting from degradation in the micro-contact region. Therefore, our research focus is to improve the micro-switch reliability by improving micro-contacts with novel contact materials and engineered micro-contact surfaces. The contact metallurgies considered in this work are thin film combinations of Au and Ruthenium. A typical MEMS switch consists of an upper hemispherical bump and a lower planar contact. A micro-switch with engineered micro-contacts will retain the upper hemisperical contact but will replace the lower planar contacts with 2D pyramidal structure. This work suggests that the combination of engineered lower contacts and composite materials can significantly improve the performance and reliability of micro-switches.
Farhana’s MS degree was conferred on the 8th of January, 2020. She has moved on to complete her PhD under Dr. Ronald Coutu’s supervision. Way to go Farhana!
During September 16-18, 2019, Dr. Coutu and Protap Mahanta attended 65th IEEE Holm Conference held in Milwaukee, Wisconsin. Protap Mahanta presented one oral presentation and one poster presentation. Turja Nandy and Mohiuddin Munna volunteered the technical sessions of the conference.
Dr. Coutu presented a work in 28th International Materials Research Congress held in Cancun, Mexico, on 20th August 2019, arranged by Materials Research Society. Turja Nandy and Dr. Coutu had their poster in the symposium: Materials and Environment.
During June 17-19, 2019, Turja Nandy and Dr. Coutu and Turja Nandy attended Nanotech 2019 Conference – TechConnect World Innovation 2019, held in Boston, Massachusetts. Turja Nandy presented two oral presentations and one poster presentation in the symposium: MEMS & NEMS Devices, Modeling & Applications.
Dr. Coutu was invited to be a keynote speaker at the Congreso de Ingenieria y Arquitectura (CONIA) to be held on October 3, 2017 at the Central American University in San Salvador, El Salvador. The planned presentation is entitled “Energy Harvesting and Smart Microgrids.
Dr. Coutu was invited to give the graduate seminar on October 30, 2017 at Tulane University, New Orleans, LA for the Department of Physics and Engineering Physics. The planned presentation is entitled “Micro-Contacts for MEMS switches”.