Physics and Astronomy
This talk will review our recent advancements in the field of nanoplasmonics. First, I will show a new technique for optical trapping of Rayleigh particles in solution, down to the few nanometer level (including single proteins and ss-DNA). The optical trapping can be used to achieve single nanoparticle Raman spectra in the few wavenumber range with unprecedented spectral resolution. In the second part of the talk, I will present our recent work to probe the quantum limits of plasmonic enhancement by using third harmonic generation.
75 Years of Fission
This year marks the 75th anniversary of the discovery of nuclear fission, the process that allows humans to unlock millions of times more energy from nature than (until 1939) we ever thought possible.
In this presentation, intended for general audiences (no physics degree required!), Dr. Jeremy Whitlock will summarize the key events that led to the deceptively simple publication by Lise Meitner and her nephew Otto Frisch in February 1939, explaining to the world how the uranium atom had been split.
Some Canadian connections will be highlighted, including the subsequent French experiments with heavy water that led eventually to Canada's nuclear program, and to Atomic Energy of Canada Limited. The legacy of that amazing year in science (and, unfortunately, global war) 75 years ago will be discussed.