November 5, 2015 - 12:15 pm
November 5, 2015 - 1:00 pm
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Dr Petrik Galvosas
Victoria University of Wellington
Studying molecular motion with Nuclear Magnetic Resonance (NMR) is nearly as old as the discovery of NMR itself . However, with the introduction of so called pulsed magnetic field gradients  NMR became a highly versatile tool for studying diffusion and flow in many areas such as physics, chemistry, material science, medical research and clinical routine.
This lecture will revolve around two options offered by NMR diffusometry in the context of porous media research. One option is custom-tailored magnetic fields which allow to track molecular displacements in real time [3,4] and to rapidly characterise porous media via their surface-to-volume ratios . A second option is recent imaging approaches for porous materials. This method is based on the work horse of NMR diffusometry which was introduced 50 years ago  but a clever modification  makes it an Magnetic Resonance Imaging (MRI) experiment in disguise. This enables Magnetic Resonance Pore Imaging (MRPI) at resolutions well beyond the limits of conventional MRI .
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 Kittler, W., Hunter, M., and Galvosas, P. Phys. Rev. E 92, 023016 (2015).
 Kittler, W. C., Obruchkov, S., Galvosas, P., and Hunter, M. W. J. Magn. Reson. 247, 42–49, (2014).
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 Hertel, S. A., Wang, X., Hosking, P., Simpson, M. C., Hunter, M., and Galvosas, P. Phys. Rev. E 92, 012808 (2015).
Victoria University of Wellington, RB901
University of Canterbury, Psychology 164
If you are unable to attend at one of the above locations the seminar can be viewed via Zoom