Julia Radzio

Julia Radzio

I am a PhD student at the University of Pennsylvania in the Department of Mechanical Engineering and Applied Mechanics. I am advised by Prof. Paulo Arratia (Penn Complex Fluids Lab) and Prof. David Issadore (Issadore Lab). My research involves designing continuous and droplet-based microfluidic devices for studying biomolecules. Prior to starting at Penn, I worked as a researcher in the Kirby Microfluidics Lab at Cornell University and as a mechanical engineering intern in the CTO group at Applied Materials. I graduated with a B.S. in Mechanical Engineering from Cornell University in 2021.


Current Projects

  1. Microfluidic platform for high-throughput single cell mRNA phototransfection.
  2. Deformability-based passive separation of microscale hydrogel droplets using microfluidics


  1. H.B. Kim, Q. Brosseau, J. Radzio, J. Wang, H. Muramatsu, D. Kuang, M.S. Grady, H.I. Chen, J.A. Wolf, A.V. Ulyanova, T. Bartfai, J. Kim, N. Pardi, J.Y. Sul, P. Arratia, and J. Eberwine (2024). ”Single cell phototransfection of mRNAs encoding SARS-CoV2 spike and nucleocapsid into human astrocytes results in RNA dependent translation interference.” Front. Drug Deliv. 4:1359700.
  2. A. J. Gerra, C. C. Jones, S. Dillavou, J.M. Hanlan, J. Radzio, P. E. Arratia, D. J. Durian. ”The Equation of Motion for Taut-Line Buzzers.” Submitted.


  1. J. Radzio, P. E. Arratia, D. A. Issadore (2023). ”Deformability-based separation of microgels using microfluidics.” APS 76th Annual Meeting of the Division of Fluid Dynamics. Washington, DC, 19-21 November 2023. T30.00005
  2. J. Radzio, Q. Brosseau, P. E. Arratia, J. H. Eberwine (2023). ”High-Throughput Microfluidic Platform for Phototransfection.” APS March Meeting. Las Vegas, NV, 5-10 March 2023. F14.00013
  3. J. Radzio (2019). ”The Role of Smart Water in Secondary Oil Recovery.” Cornell Undergraduate Research Board Fall Symposium. Ithaca, NY, 13 November 2019.

Previous Experience

  • Mechanical Engineering Intern, CTO Group, Applied Materials, 2021
  • Undergraduate Researcher, Kirby Microfluidics Lab, Cornell University, 2018-2021
  • Mechanical Subteam Lead, Cornell ChemE Car, Cornell University, 2018-2021

Certifications and Awards

  • NSF Graduate Research Fellow, 2021-2023

Contact Information

  • Please contact me by email: jradzio@seas.upenn.edu