Join us for the next frontiers seminar!
Date/Time: Monday 6th February, 13:00 – 15:00 (AEST)
Title: Chemical Analysis of Lithium of Battery Materials with high spatial resolution using EDS and EELS in the Electron Microscope
Presenter: Raynald Gauvin, Materials Engineering, McGill University, Montréal, Québec, Canada
Venue: AIBN Building 75, Level 1 Seminar Room
Zoom: https://uqz.zoom.us/j/82615229222
Abstract:
This seminar will present the scanning transmission electron microscope (STEM) SU-9000 from Hitachi which characterizes thin and massive samples with electrons beam energies ranging from 0.1 to 30 keV. This microscope is equipped with an electron energy loss spectroscopy (EELS) detector which allows the detection of Lithium. High spatial resolution images are possible with a resolution of 0.16 nm. Many examples will be presented on Li materials and on nano-materials. The microscope is equipped with a EDS detector of lithium (Extreme, Oxford Instrument) and the microanalysis of lithium compounds, which is very difficult and challenging, will also be covered. The preparation of thin films by focus ion beam (FIB) for high spatial resolution images in STEM will be also shown with the newly acquired Hitachi NX-5000 FIB. Also, Monte Carlo simulations of electron trajectories will be presented and discussed in relation to electron microscopy.
Bio:
Professor Raynald Gauvin received his Ph.D. in 1990 at École Polytechnique de Montréal in Metallurgical Engineering. He was then appointed as an assistant professor in Mechanical Engineering at Université de Sherbrooke where he became associate Professor in 1995 and full Professor in 1998. In 2001, he joined the department of Mining and Materials Engineering of McGill University, Montréal, Canada, as a full Professor.
Professor Gauvin's research interests are related in developing new methods to characterize the microstructure of materials using high resolution scanning electron microscopy with X-ray microanalysis and Monte Carlo simulations. He is the creator of the CASINO program that is used by more than 10,000 users in the world. He has more than 300 papers in scientific journals and conference proceedings. He was Invited Speaker in more than 100 international scientific conferences. He won several scientific prizes, most notably the 31st Canadian Materials Physics Medal in 2007 from the Metallurgical Society of the Canadian Institute of Mining, the Heinrich Award in 1997 from the Microbeam Analysis Society of America and the Prix d’excellence du président de l’École for the best Doctorate Thesis defended in 1990 at École Polytechnique de Montréal.
He was the President of the Interamerican Societies of Electron Microscopy (CIASEM) from 2009 to 2011, the President of the Microbeam Analysis Society (MAS) from 2005 to 2006, the President of the Microscopical Society of Canada (SMC) from 2001 to 2003 and the President of the International Union of the Microbeam Analysis Societies (IUMAS) from 2000 to 2005. He is currently the holder of the Birks Chair in Metallurgy and also of an Industrial Research Chair funded by Hydro-Québec and the National Science and Engineering Research council of Canada. He was awarded Honorary Membership of the European Microbeam Analysis Society in 2017 and Fellow of the Microanalytical Society of America in 2019.
