Classical and Quantum Plasmonics
Reducing the size of semiconductor devices, circuits, and components exerts an influence on their performance and speeds up information processes. However, size reduction poses major problems such as short-channel effects, gate leakage, and drastically increasing power density. One successful effective solution is to supersede electromagnetic waves as information carriers. Due to their extremely high bandwidth, fiber-optics communication devices can carry information by three orders of magnitude faster than electronic circuits. Nevertheless, because of diffraction limits, this does not allow to localize the electromagnetic field in regions smaller than half of the wavelength and integrating optical devices and circuits have encountered serious problems. One of the promising solutions is surface plasmons (SPs).
In this talk, I will begin by addressing the current challenges in speeding up information. Then, I will introduce the concept of plasmonics by employing Maxwell's equations. In addition, I will discuss the Drude model for the classical regime of a joint dielectric-bulk metallic system. Special techniques such as Kerchman will be demonstrated as an example of available methods for launching SP’s. In particular, to understand why one is interested in monolayer novel structures, such as graphene, and the importance of thickness of system, I will talk about SP spectrum of a typical metallic thin film. In the quantum regime, to deal with SP one needs to first evaluate the single-body wave function of the system. Therefore, as a reliable method I will talk about the Tight-Bonding model, especially for graphene, and then I will evaluate SP in graphene.
All Faculty, staff and students are invited
Coffee will be served in the Department of Physics
SP-367-11 at 2:30 PM
Information: 514 848-2424 ext. 3270