LEEM Observations of Surface Reactions on Silicon
ChEMS Seminar
Featuring Peter Bennett, Ph.D.
Associate Director, Graduate Studies
Professor,
Location: Engineering Lecture Hall 110
Abstract:
Low Energy Electron Microscopy (LEEM) is a powerful tool for the study of reactions on surfaces, since it can provide video-rate images with 10nm resolution at high temperature. Bennett will discuss several examples of metal-silicon reactions, including step-flow during island formation, nanowire growth and solution and thermo-migration of liquid alloy droplets. Quantitative analysis of these kinetic processes allows extraction of fundamental parameters such as adatom diffusion and island formation energies.
Image sequence showing a “roadway” built up by multiple passes of PtSi liquid droplets at T = 1100°C (5x10µm each panel). Droplets of interest are numbered. Elapsed times are 0, 5, 10 and 30 seconds for panels a-d, respectively.
Share
Upcoming Events
-
EECS Seminar: Steering Diffusion Models for Generative AI, From Multimodal Priors to Test-Time Scaling
-
MAE 298 SEMINAR: Hypersonic Viscous Aerothermochemistry - External Aerothermodynamics and Scramjet Fuel-Air Mixing
-
CBE 298 Seminar: Finding Catalysts of Gut Reactions - The Gut Microbiota in Disease Onset and Treatment
-
CEE Seminar: Confirming a Critical Foundation of Global Warming - Direct Observational Evidence from Space of the Impact of CO2 Growth on Infrared Spectra
-
CBE 298 Seminar: Teaching Transport Phenomena Through Observation - From Einstein’s Tea Leaves to Dissolving Skittles