We use an advanced optical launch platform to accelerate micrometer-sized projectiles to high velocities ( ~1 km/s and beyond), allowing us to observe real-time interactions with target materials. Our laser-induced microprojectile impact testbed offers a unique and exciting opportunity to explore fundamental questions about deformation and failure under extreme conditions. This platform provides a cutting-edge environment for breakthrough research—perfect for those passionate about pushing the boundaries of materials science.

Under the extreme conditions of deformation and pressure induced by impact, metal atoms can be forced into close proximity needed to form instantaneous solid-state metallic bonding. While the conditions necessary for impact-induced metallic bonding are relatively well understood, the properties emerging at the bonded interfaces remain largely unexplored. Our work focuses on using in-situ microparticle impact experiments, paired with site-specific micromechanical measurements, to study the microstructure and properties of these interfaces. Join us in uncovering the fundamental materials science and mechanics of metallic bonding.

As deformation rates increase, the thermally activated dislocation glide transitions into a ballistic transport governed by interactions with phonons. Understanding this dislocation-phonon drag regime is crucial for designing metallic materials for extreme conditions. However, it has proven challenging to study empirically, partly due to the resource-intensive nature of the experimental approaches targeting this regime. In our lab, we have developed an innovative high-throughput approach, coupled with theoretical developments and physically based constitutive frameworks, to understand the ballistic transport of dislocations. Join us in advancing the science of high-rate deformation and shaping the future of materials design.

A key challenge in producing next-generation structural materials is overcoming the limitations of traditional melt-based processes. Solid phase processing offers a high-potential solution for metals and composites by enabling synthesis and fabrication without melting. Techniques like mechanical alloying, severe plastic deformation, and cold spray deposition introduce mechanochemical and thermal coupling that facilitates material flow, mixing, bonding, and phase transformations. These processes can exploit non-equilibrium pathways to create metastable phases and microstructures with enhanced mechanical and tribological properties. Join us in developing the manufacturing science for solid phase processes.