Science and engineering of electronic and optoelectronic materials and devices.
Ferroelectrics, piezoelectrics, and pyroelectrics as sensors, actuators, and energy converters; low loss and frequency agile microwave dielectric resonators and filters; electrooptic, photorefractive, and nonlinear optical crystals for wavelength control, modulation, and microwave photonic applications. Multiferroic multifunctional materials.