contact mechanics, fracture and fatigue of engineering materials, finite element modeling of surface contact and machining, thin-film processing and characterization, adhesion and fatigue of MEMS devices, plasma-assisted surface functionalization of biomaterials, surface patterning for cell adhesion and growth control, mechanics & tribology of magnetic recording devices, mechanotransduction effects in natural cartilage, microfibrous scaffolds for tissue engineering, surface nanoengineering techniques, tribology and mechanics of artificial joints, epidermal and wearable electronics, mechanical metamaterials