Julia Greer

Julia Greer is the Ruben F. and Donna Mettler Professor of Materials Science, Mechanics, and Medical Engineering at the California Institute of Technology (Caltech), and Director of the Kavli Nanoscience Institute. She holds a B.S. from MIT (1997), M.S. (2000), and Ph.D. (2005) from Stanford University. Her research focuses on nano-scale phenomena, including mechanical properties, in-situ deformation, and nano-fabrication, with applications in energy storage, additive manufacturing, and nanoarchitected materials.

Her work explores solid-state batteries, 3D printing of functional materials, and the interplay between material microstructure and macroscopic properties. Recent advancements include developing bioresorbable microrobots and AI-driven materials design for non-periodic architectures. Greer’s contributions span fields like nanolithography, multiphase material systems, and quantum emitter engineering in 2D materials.

Her research emphasizes scalable fabrication techniques, including hydrogel infusion for metals and multiphoton polymerization. These methods enable high-resolution architectures with tunable mechanical and electromechanical properties. Her lab also investigates fracture mechanics in solid-state electrodes and the impact of morphological heterogeneity on battery performance.

Greer’s leadership at the Kavli Nanoscience Institute drives interdisciplinary nanoscience research. Her publications (over 150+ articles) reflect expertise in energy storage, nanotechnology, and advanced manufacturing, with a focus on translating fundamental insights into practical applications.