Metallic Glasses, Hypersonic Materials, Mixed Mode Fracture of Human Cortical Bone, Fatigue and Fracture of Mineralized Biological Tissue, Fatigue and Fracture of SiC at High Temperatures, Fatigue and Fracture of Biomedical Materials, Fatigue and Wear of Silicon Structural Films, Fracture and Fatigue of Mo-Si-B High Temperature Alloys, Grain Boundary Engineering in Promoting High-Cycle Fatigue Resistance, Mechanisms of Fatigue and Fracture of Metal/Ceramic Interfaces, NiTi Shape Memory Alloys for Biomedical Applications, Toughness in Brittle Materials: Atomic-resolution Studies of Fracture in SiC