Thursday, 17 September 2015

Associate Professor Stewart Walker speaks to the SMAF Chemistry students

Stewart Walker is a forensic, environmental and analytical chemist, with research interests that cover all aspects of advanced analytical techniques, especially mass spectrometry.

He discussed many real applications of his work, including how mass spectrometry can be used to help determine if a cheque has been forged by analysing ink on paper fibres, how isotope ratios can be used to determine the origins of soil and wine, and whether environmental contamination, for example mercury in the Great Barrier reef, occurred recently or hundreds of years ago.

He explained how he had been growing his hair as part of an experiment to show that chemicals trapped in hair can indicate which part of the world a person has been to. Everyday chemicals, including those in soap, drinking water and diet can be used to place the whereabouts of a person, down to the number of days they have spent in a particular location. Analysis of Stewart's hair a few years ago accurately showed that  he had travelled from Australia, to Norway for 10 days, then onto New Orleans for 5 days,  Prague for 10 days and then finally back to Australia. This sort of technology could be used to help identify corpses after natural disasters as well tracking the movement of people around the world. 

Stewart: with hair

He described how he has only recently shaved his hair off after growing it for ten years. Now people from all over the world want to use to experiment with it, including a group that want to blow it up! See link below for more information:

Stewart, with Zoe and Naomi, minus his hair! 

Associate Professor Jamie Quinton speaks to the Year 12 SMAF Physics students

The Year 12 Physics students were lucky enough to have Jamie Quinton present a lecture on Nuclear Fusion.

Jamie Quinton is the Associate Dean of Teaching and Learning in the School of Chemical and Physical Sciences. He is an Associate Professor of Nanotechnology/Physics/Chemical Physics.
Some of his current research interests include: Nanoscale surface phenomena, surface modification, inorganic treatments for corrosion protection and building new architectures for harvesting solar power.

His insightful and well presented lecture described the difference between nuclear fission and nuclear fusion, as well outlining the advantages and disadvantages of both.He used excellent visual models to describe the science, including if a hydrogen atom was scaled up to be the size of Australia then the nucleus would be one quarter of the size of Uluru.


Cluster Map