EE Seminar: Magnetic and Piezoelectric Tunable Devices for Versatile Electronic Systems

Seminar | February 19 | 3-4 p.m. | Soda Hall, HP Auditorium, 306

 Amal El-Ghazaly, UC Berkeley

 Electrical Engineering and Computer Sciences (EECS)

By year 2021, the number of existing wireless electronic devices is expected to be four times greater than the world’s human population. They will be used for countless “smart” applications that are nearly unimaginable today. However, the range of functions these devices serve across applications is very broad, often having widely different device requirements and tradeoffs. This seminar presents research that delves into the challenge of engineering devices that are highly versatile and simultaneously energy efficient and tunable to meet the ever-broadening application demands of the future.

The talk will focus on three areas in which electronics can benefit significantly from versatility: communications, haptic interfaces, and sensing. The devices discussed achieve versatility by strategically examining and utilizing the frequency-dependent and stress/strain-dependent behavior of various magnetic, piezoelectric, semiconductor, and 2D material heterostructures. Magnetoelectric (magnetic/piezoelectric) heterostructures will be presented for tunable communications. Ultrafast switching of ferrimagnetic nanodots will provide localized control of tactile displays and other haptic interfaces. Finally, 2D materials will be coupled with magnetoelectric composites for tunable sensing systems. Such devices will capitalize on the nanoscale interactions of diverse materials to create integrated systems that are broadly versatile, extremely energy-efficient, and self-powered, such that they can be deployed across vast agricultural landscapes, urban areas, or industrial sites without constant upkeep.

Bio: Amal El-Ghazaly is a postdoctoral research fellow at the University of California Berkeley, where she was awarded the University of California President's Postdoctoral Fellowship in 2017. Her postdoctoral research explores new possibilities for ultrafast all-electrical switching of magnetic nanodots for faster and more energy-efficient computer memories. She received her B.S. and M.S. degrees in electrical and computer engineering from Carnegie Mellon University in 2011. She then earned a Ph.D. in electrical engineering from Stanford University, where she was funded by both NSF and NDSEG graduate research fellowships as well as the Stanford DARE fellowship until her graduation in 2016. Her Ph.D. research focused on radio frequency devices using magnetic and magnetoelectric thin-film composites for tunable wireless communications. In the summer of 2015, while completing her Ph.D., she interned with the Components Research department at Intel in Hillsboro, OR. She has also studied and interned abroad in Japan, Egypt, and Nigeria over the course of her undergraduate and graduate degrees. Throughout her career, she has devoted much of her spare time to numerous diversity initiatives in STEM, some of which include serving as a mentor with the Enhancing Diversity in Graduate Education program at Stanford, serving as a tutor-mentor with the East Palo Alto Stanford Academy, and founding the STEM Fam diversity series at Berkeley. She is deeply passionate about empowering minorities through higher education and stimulating technology development and science and engineering education across the world.

 ahburr@berkeley.edu, 510-642-2384