Dr. Julia Greer

Professor

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Biography

Julia R. Greer is a Professor of Materials Science and Mechanics Medical Engineering at the California Institute of Technology (Caltech) and serves as the Executive Officer of Applied Physics. She is also the Ruben F. Donna Mettler Professor, assuming the role in 2019. Greer has made significant contributions to the field of materials science, focusing on the mechanical properties of materials at the nanoscale. Her research combines physics, materials science, and engineering principles to develop innovative strategies for nanomaterials. Greer earned her Bachelor of Science degree from the Massachusetts Institute of Technology in 1997, followed by a Master of Science and a Ph.D. from Stanford University in 2000 and 2005, respectively. She started her academic career as an Assistant Professor at Caltech and advanced to Professor in 2013. In addition to her teaching and research responsibilities, she is the Fletcher Jones Foundation Director from 2019 to 2025, overseeing initiatives in materials science and engineering disciplines.

Research Interests

Experience

Assistant Professor

— Present

California Institute of Technology • Pasadena, CA

Served as an Assistant Professor in the disciplines of Materials Science and Engineering.

Professor

— Present

California Institute of Technology • Pasadena, CA

Became a Professor focusing on advanced materials and their mechanical properties.

Mettler Professor

— Present

California Institute of Technology • Pasadena, CA

Holds the Ruben F. Donna Mettler Professorship in the Department of Materials Science.

Executive Officer

— Present

California Institute of Technology • Pasadena, CA

Serves as the Executive Officer for the Department of Applied Physics.

Requirements for California Institute of Technology

Doctorate Program
Requirements
TOEFL
Total
Required:100
IELTS
Overall
Required:7
Prerequisites
Bachelor's degree or equivalent Strong background in mathematics and physical sciences
Application Checklist
  • Online Application
  • Statement of Purpose
  • Three Letters of Recommendation
  • Transcripts
  • Resume/CV
Specialization Notes

Most Caltech graduate programs are PhD-only. GRE General and Subject tests vary by department; many have made them optional or no longer accept them.