Departmental Seminar

Quantitative Scanning Transmission Electron Microscopy; “State of the Art” and where to next?

Associate Professor Matthew Weyland
Monash Centre for Electron Microscopy & Department of Materials Science and Engineering
Monash University

In the past decade the aberration corrected transmission electron microscope has provided a step change in the resolution and contrast attainable for the characterization of the atomic and nanoscale structure of engineering materials. This instrumentation has also enabled another, quieter, revolution that will be the true legacy of these instruments in the physical sciences: the move from qualitative to quantitative microscopy of atomic structure and chemistry.

This presentation will cover how we got to this position, highlighting the importance characterized, stable, instrumentation, simulation of elastic and inelastic electron scattering,. It will examine results coming from the current, latest, revolution of instrumentation; that of detectors. It will outline some challenges for the future and discuss the arrival of the next generation of TEM systems in Australia.

Dr Matthew Weyland received his Ph.D from the Department of Materials Science and Metallurgy, University of Cambridge in 2001, under the supervision of Dr. Paul Midgely. He followed this with a prestigious “Royal Commission for the Great Exhibition of 1851” fellowship, also held at Cambridge, and a postdoctoral position at to Cornell University, Ithaca NY. At these institutions his pioneering work on electron tomography opened up a new dimension in electron microscopy in materials science. In 2007 he accepted a permanent staff position at Monash University, at the then newly formed Monash Centre for Electron Microscopy. Matthew also holds a position in the Department of Materials Science and Engineering. He was responsible for the installation, and operation of the first aberration corrected TEM in Australia. He is currently preparing for the arrival in 2020 of the “UltraTEM”, a new ARC LIEF funded TEM column, in MCEM. His current research is centred on the development of quantitative techniques for the determination of materials structure and chemistry at the atomic and nanoscale in two, three and four dimensions.

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