Active and Passive Metamaterial Research at Queen May University London
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Active and Passive Metamaterial Research at Queen May University London
Wed, 24/10/2012 - 14:00 to 15:30
Location:
Speaker:
Dr Khalid Rajab, Queen Mary University of London
Synopsis:
Artificially engineered materials, or metamaterials, have received significant interest over the last decade, with the promise of a host of novel devices ranging from the perfect lens to the invisibility cloak. It is, however, well known that due to the dispersive nature of passive materials, these novel metamaterial-based devices are often narrowband and lossy. Particularly for near-zero or negative-valued material properties (ε or μ) which occur due to resonance in passive materials, this high-dispersivity can be quite overwhelming to, and significantly degrade the performance of a device. In this talk, I will present recent work at QMUL on metamaterials and transformation electromagnetics. In particular I will discuss approaches to the improvement of metamaterial and device bandwidth and loss, based on implementations of both passive and active media.
Biography:
After completing his high school education in Kuwait, Dr. Khalid Rajab moved to the United States on an academic scholarship to pursue his higher education. He received his BSc in Electrical Engineering in 2003, as well as his MA in Mathematics and PhD in Electrical Engineering in 2008, all from the Pennsylvania State University. His postgraduate studies were funded by a Benjamin Franklin Technology Development Award, and his research was performed at Penn State's Materials Research Institute under the supervision of Profs. Michael Lanagan and Raj Mittra. His PhD research was focused primarily on materials characterisation from DC up to THz frequencies, but also involved numerical electromagnetics, efficient scattering calculations, and metamaterials development. Since 2008 he has been at Queen Mary University of London, first as a postdoctoral researcher, and recently as a Lecturer.