Invisibility Cloak via Multiscale Manipulation of Electromagnetic Waves
This talk presents a review of some current work conducted at Queen Mary University of London, related to meta-materials and invisibility cloaks
Effectively manipulating electromagnetic (EM) waves plays an important role in many modern technological innovations ranging from Marconi's first transatlantic wireless transmission through Sir Henry Tizard's radar to modern cellular communications. Now enabled with two recent developments - transformations optics and the design and fabrication of novel electromagnetic materials, antenna engineers have been equipped with new design tools which provide entirely fresh solutions to classical problems restricted by fundamental physics and enable new ways to manipulate the radiation, propagation and absorption of EM waves.
This talk presents a review of some current work conducted at the Queen Mary University of London, related to metamaterials and invisibility cloaks. I will start with the introduction of Transformation Optics, a new paradigm for EM design, providing equivalent material properties through a well-chosen change of coordinates, in order to achieve unprecedented wave manipulation. This is essential for the development of conformal antennas or flat optical lenses. Along the way, design challenges of new functional materials, especially, understanding the role of ordered and disordered particles in a host media will be discussed as they are scientifically and technologically important in order to achieve superior spectral and angular properties. An efficient numerical technique, which is capable of modelling more than 20,000 plasmonic nanoparticles, will be introduced. Furthermore, I will present the theory of hyperuniformity and some intriguing applications in the design of materials with randomly dispersed particles. I will demonstrate that a Luneburg lens based on the proposed hyperuniform media has superior radiation properties and it will open up a new avenue in electromagnetic materials-by-design.
Professor Yang Hao, FIEEE, CEng, FIET, Dean for Research, Faculty of Science and Engineering, Queen Mary University of London
Professor Yang Hao was awarded the A F Harvey IET Research Prize in 2015 for his research on microwaves antennas and his innovative use of materials.
Continuing Professional Development
This event can contribute towards your Continuing Professional Development (CPD) hours as part of the IET's CPD monitoring scheme.
27 Feb 2019
10:00am - 12:00pm
Solent Local Network
Requested, but not required.
The Blue Lagoon
10:00 - Arrivals & Refreshments
10:30 - Lecture Start
12:00 - Lecture Finish (Aim)