Fluid dynamics, heat transfer, and thermodynamics of energy systems. Heat and mass transfer in buoyant flows, second-law and exergy analysis, numerical simulation of transport phenomena and experimental methods.

Micro/nanoscale thermodynamics and heat transfer, Dynamics of nanodroplets, nanobubbles, and nanoparticles, Structure-property relationship for materials and interfaces, and Computational modeling

Conventional Energy (combustion, IC engines, coal power plants, fluid and heat transport), Alternative Energy (characterization of solid oxide fuel cells, modeling of fuel cells, hydrogen technologies, alternative fuels, clean coal technologies), Environmental Science & Technology (air pollutants, particulates, measurement techniques), Various Fields (synthesis of nanoparticles, laser diagnostics, fire safety, thermal engineering)

Advanced li-ion battery, beyond li-ion battery, energy storage system, renewable energy system, grid energy storage, nano, macro-mechanics of materials, self-assembly of nanoparticles, nanostructure, multiphysics, multiscale experiment and simulation.

Fluid dynamics, computational fluid dynamics, hypersonic propulsion systems, computational analysis of jet mixing, flow losses and mixing enhancement in combustors, aircraft gas turbine ramjet propulsion systems, and scramjet performance.

Optical materials and devices in nanophotonics and plasmonics; Physics and applications of optical metamaterials; Nanoscale optomechanics, optical nanoelectromechanical systems (NEMS); Integrated optofluidic devices and optical sensors; Photon management for solar/thermal energy harvesting; Optical device micro-/nano-fabrication.