MateriAlZ Seminar: David Masiello
Friday, March 18, 2022, 11:00 a.m. MST Arizona
David J. Masiello
Chemistry, MSE, and AMath
University of Washington
"Probing the Optical Responses in Plasmonic and Photonic Nanostructures with Fast Electron Spectroscopy"
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Abstract
Pushing the boundaries of fast electron nano-spectroscopy, recent advances in energy-monochromated and aberration-corrected scanning transmission electron microscopes (STEMs) have opened the visible- to far-IR spectrum to correlated nanometer-scale spatial imaging. Exploiting these breakthroughs, in this talk, I will highlight our recent research in low-loss STEM electron energy-loss spectroscopy (EELS) in collaboration with Jon Camden (Notre Dame), Philip Rack (Tennessee), and Juan Carlos Idrobo (ORNL). Emphasis will be placed on modeling the interaction of the fast electron probe with surface plasmon and photonic cavity modes in precision engineered nanostructures. Several topics ranging from plasmonic energy transfer, weak-to-strong coupling, Fano antiresonances, and magnetic plasmon hybridization will be discussed.
Bio
Dr. David J Masiello is a professor of chemistry and adjunct professor of materials science and engineering and of applied mathematics at the University of Washington. He joined the UW faculty in 2010 after postdoctoral research at Northwestern University and the University of Washington. He received a B. S. degree in Mathematics (1999) and a Ph.D. in Chemical Physics (2004) 2004), both from the University of Florida.
Dr. Masiello’s research focuses on the theoretical modeling and numerical simulation of nanoscale optical, magnetic, thermal, and quantum materials phenomena as well as of the advanced optical and electron beam probes used for characterization of these materials Dr. Masiello is an NSF DMREF Center PI and is a recipient on an NSF CAREER Award and Presidential Early Career Award for Scientists and Engineers (PECASE) awarded by President Obama.