CAI Seminar: Metamaterials for electromagnetic wave manipulation

Event Details

Date:

Tuesday, 30 September 2014 - Tuesday, 30 September 2014

Time:

9:00 am - 10:00 am

Room:

CAI building 57, Level 2 Auditorium, UQ St Lucia Campus

Location:

Centre for Advanced Imaging

Event category(s):

Full Description:: Ilya Shadrivov and Alexey Slobozhanyuk from the Nonlinear Physics Centre, Research School of Physics and Engineering, Australian National University will present a talk titled: Metamaterials for electromagnetic wave manipulation.

This talk will consist of two parts: in the first part we will overview basic properties of metamaterials and their capabilities in manipulating electromagnetic waves.

In the second part of the talk we will discuss possible application of metamaterials for Magnetic Resonance Imaging (MRI). In particular, we will show how to exploit efficiently the unique properties of an ultrathin resonator for improving the MRI. A resonator is formed by an array of metallic wires placed inside the MRI scanner under the object. By means of subwavelength near-field manipulation with the metasurface, it is possible to enhance and redistribute the radiofrequency magnetic field in the region of interest, strongly improving scanner sensitivity, signal-to-noise ratio, and image resolution.