Larry Galloway

I graduated with a Ph.D. from the University of Pennsylvania in the Mechanical Engineering and Applied Mechanics in 2022. My advisors were Paulo Arratia and Doug Jerolmack. In my research, I studied how the microstructure of disordered materials determine rheological response. I earned my B.S. in Mechanical Engineering from Lafayette College. Prior to joining the Complex Fluids lab, I thru hiked the Appalachian Trail from Maine to Georgia and coordinated efforts between design, engineering, and manufacturing as an interior launch lead for Fiat-Chrysler Automobiles.


  1. Mechanics of mud- an interdisciplinary team takes on the challenge of understanding the unpredictable mechanics of a ubiquitous, but mysterious material: mud.
  2. Rearrangements and softness in disordered solids- detecting underlying, general relations within experimental data that reveal how plasticity emerges from constituent interactions in non-crystalline materials. IRG1 (2017-2023) of UPenn’s Materials Research Science and Engineering Center.


  • Goff Prize, 2021


  • ‘Relationships among structure, memory, and flow in sheared disordered materials’, Nature Physics, 2021
  • ‘Crystalline shielding mitigates structural rearrangement and localizes memory in jammed systems under oscillatory shear’, Science Advances, 2021
  • ‘Scaling of relaxation and excess entropy in plastically deformed amorphous solids’, PNAS, 2020
  • ‘Quantification of plasticity via particle dynamics above and below yield in a 2d jammed suspension’, Soft matter, 2020