Physical Electronics, Photonics & Magnetics

Nanoelectronics and Photonics

The quantum phenomena of nanoscale structures can be used to discover and engineer effects that can be usefully employed for high performance computing and telecommunications applications, and for advanced concepts in sensor biophysics devices. Research interests focus on semiconductor physics and modeling of electronic and optoelectronic devices in the nanoscale, low dimensional effects, quantum effects, quantum information processing/computing, molecular electronics, bionics/biological computing, and phonon processes in nanostructures.

Some of the more prominent achievements in this area include: the generalization of electron-optical-phonon interaction Hamiltonians for quantum wells with ternary materials, the derivation and calculation of interaction Hamiltonians and scattering rates by quantized optical and acoustic phonons in quantum wires, and the pioneering study of phonon band engineering and coherent phonon generation for enhanced device performance for both electronic and thermoelectric devices.

Recently these studies have been expanded to include non-cubic semiconductors, especially the technologically important nitride semiconductors with wurtzite symmetry. The envelope-function approach has been applied to wurtzite nitrides, providing early evidence for the importance of strain-induced piezoelectric effects on device performance. Very recently, a theory on the Cerenkov generation of coherent acoustic and optical phonons in these material systems has been developed and proposed for application for THz generation.

Currently these same low dimensional phenomena techniques are being extended and applied to develop theoretical understanding of quantum effects for charge carriers and spin in nanostructures. Direct application of these theories to the design of such structures as coherent quantum repeaters and quantum computers will undoubtedly lead to the development of new devices.

In the field of photonics, we use photons to process, display, store, and transmit information. In transmitting information, fiber optics is our main focus. In displaying information we are focusing on an active matrix approach that employs a liquid crystal display; such as your flat screen television. Finally in storing information we focus on reading and writing CD's, burning them and playing them.

Sample Plans of Work

PhD Milestone Guildlines