Randy Ewoldt's directory photo.

Randy Ewoldt


Primary Affiliation

Autonomous Materials Systems


Status Part-time Faculty

Home Department of Mechanical Science and Engineering

Phone 333-6532


Address 3261 Beckman Institute, 405 North Mathews Avenue

  • Biography

    Randy H. Ewoldt is a professor of mechanical science and engineering and a Kritzer Faculty Scholar at the University of Illinois Urbana-Champaign. He is also a part-time faculty member at the Beckman Institute and an affiliate faculty member at the Materials Research Laboratory.


    • B.S. from Iowa State University, 2004
    • M.S. from MIT, 2006
    • Ph.D. from MIT, 2009

    He completed his postdoc at the University of Minnesota. In 2018, he was a Guest Professor at ETH-Zürich. Ewoldt regularly lectures at rheology short courses in the U.S. and Europe.

  • Honors
    • Presidential Early Career Award for Science and Engineering (PECASE), 2017
    • Dean's Award for Research Excellence, College of Engineering, University of Illinois at Urbana-Champaign, 2016
    • Arthur B. Metzner Early Career Award, The Society of Rheology, 2014
    • NSF-CAREER Award, 2014
    • 3M Nontenured Faculty Award, 2014
    • DuPont Young Professor Award, 2014
    • ASME Pi Tau Sigma Gold Medal, 2013
    • Doctoral New Investigator Award, American Chemical Society Petroleum Research Fund, 2013
    • Distinguished Young Rheologist Award, TA Instruments, 2013
    • Postdoctoral Fellowship Award, Institute for Mathematics and its Applications, 2009-2011
    • Luis de Florez Award for Outstanding Ingenuity and Creativity, M.I.T., 2009
    • National Science Foundation Graduate Research Fellowship, 2004-2007
    • Outstanding Thesis in Fluid Mechanics (Wunsch Foundation Award), M.I.T., 2006
  • Research

    Ewoldt conducts fundamental research in fluid mechanics, rheology, and soft matter.

  • 2022

    • Ewoldt & Saengow, “Designing Complex Fluids,” Annual Review of Fluid Mechanics (2022).


    • Bharadwaj, N. A., J. G. Kang, M. C. Hatzell, P. V. Braun, and R. H. Ewoldt, Integration of colloids into a semi-flexible network of fibrin, Soft Matter, 13(7), 1430-1443 (2017).


    • Abdeen, A. A., J. Lee, N. A. Bharadwaj, R. H. Ewoldt, and K. A. Kilian, Temporal Modulation of Stem Cell Activity using Magnetoactive Hydrogels. Advanced Healthcare Materials, early view article (2016).
    • Blackwell, B. C. and R. H. Ewoldt, Non-integer asymptotic scaling of a thixotropic-viscoelastic model in large-amplitude oscillatory shear. Journal of Non-Newtonian Fluid Mechanics, 227, 80-89 (2016).
    • Blackwell, B. C., A. E. Nadhan, and R. H. Ewoldt, Impacts of yield-stress fluid drops on permeable meshes. Journal of Non-Newtonian Fluid Mechanics, 238, 107-114 (2016).
    • Corbin, E., Adeniba, O., Ewoldt, R. H., Bashir, R., Dynamic Mechanical Measurements of the Viscosity of Single Adherent Cells. Applied Physics Letters, 2016. 108, 093701.
    • Corman, R. E., L. Rao, N. A. Bharadwaj, J. T. Allison, and R. H. Ewoldt, Setting Material Function Design Targets for Linear Viscoelastic Materials and Structures. Journal of Mechanical Design, 38(5), 051402 (2016).
    • Ewoldt, R. H., Predictions for the northern coast of the shear rheology map: XXLAOS. Journal of Fluid Mechanics, 798, 1-4 (2016).
    • Schuh, J. K. and R. H. Ewoldt, Asymmetric surface textures decrease friction with Newtonian fluids in full film lubricated sliding contact. Tribology International, 97, 490-498 (2016).


    • Bharadwaj, N. A. and R. H. Ewoldt, Single-point parallel disk correction for medium-amplitude oscillatory shear. Rheologica Acta, 54(3), 223-233 (2015).
    • Blackwell, B. C., M. E. Deetjen, J. E. Gaudio, and R. H. Ewoldt, Sticking and splashing in yield-stress fluid droplet impacts on coated surfaces. Physics of Fluids, 27(4), 043101 (2015).
    • Freund, J. B. and R. H. Ewoldt, Quantitative rheological model selection: good fits versus credible models using Bayesian inference. Journal of Rheology, 59(3), 667-701 (2015).
    • Johnston, M. T., W. P. King, and R. H. Ewoldt, Shear stress characteristics of microtextured surfaces in gap-controlled hydrodynamic lubrication. Tribology International, 82, 123-132 (2015).


    • Bharadwaj, N. A. and R. H. Ewoldt, Constitutive model fingerprints in medium-amplitude oscillatory shear. Journal of Rheology, 59(2), 557-592 (2015).
    • Bharadwaj, N. A. and R. H. Ewoldt, The general low-frequency prediction for asymptotically-nonlinear material functions in oscillatory shear. Journal of Rheology, 58(4), 891-910 (2014).
    • Blackwell, B. C. and R. H. Ewoldt, A simple thixotropic-viscoelastic constitutive model produces unique signatures in large-amplitude oscillatory shear (LAOS). Journal of Non-Newtonian Fluid Mechanics, 208, 27-41 (2014).
    • Ewoldt, R. H., Extremely soft: Design with rheologically-complex fluids. Soft Robotics, 1(1) 12-20 (2014) (Invited review for inaugural issue).


    • Ewoldt, R. H. and N. A. Bharadwaj, Low-Dimensional Intrinsic Material Functions for Nonlinear Viscoelasticity. Rheologica ACTA, 52(3), 201-219 (2013).
    • Ewoldt, R.H., Defining Nonlinear Rheological Material Functions for Oscillatory Shear. Journal of Rheology, 57(1) 177–195 (2013).


    • Felts, JR; Somnath, S; Ewoldt, RH; King, WP,Nanometer-scale flow of molten polyethylene from a heated atomic force microscope tip. Nanotechnology, 2012, 23 (21), 215301. DOI:10.1088/0957-4484/23/21/215301.