Quantum Resistor Network Theory, Mesoscopic Devices and Molecular Electronics, Optical/Wave Computing, Simulation of Amorphous Silicon Thin-film Transistors, and Solar Cells, DLTS and Optical DLTS Measurements in MOS Devices, AlGaAs/GaAs Quantum Well Lasers and CdS Diodes, Conduction in Heterojunctions, Measurement of Radiation and High Temperature Effects of MOSFETs, Random Walk Theory and Applications, Surface and Interface Properties of Materials, Dielectric Breakdown Simulation, Charge Transport in Composite and Disordered Materials, IC Fabrication and Processing for Teaching Purposes, DRAM and SRAM Test Structures and Failure Mode Analysis.