Directory

Randy Ewoldt's directory photo.

Randy Ewoldt

Professor

Primary Affiliation

Autonomous Materials Systems

Affiliations

Status Part-time Faculty

Home Department of Mechanical Science and Engineering

Phone 333-6532

Email ewoldt@illinois.edu

Address 3357 Beckman Institute, 405 North Mathews Avenue

  • Biography

    Randy H. Ewoldt is a professor and Kritzer Faculty Scholar in the Department of Mechanical Science and Engineering and an affiliate faculty member at the Materials Research Laboratory. He completed his postdoctoral research at the University of Minnesota, and in 2018 he was a Guest Professor at the Swiss Federal Institute of Technology in Zürich. He regularly lectures at rheology short courses in the U.S. and Europe.

    Education

    • B.S., mechanical engineering, Iowa State University, 2004
    • M.S., mechanical engineering, Massachusetts Institute of Technology, 2006
    • Ph.D., mechanical engineering, Massachusetts Institute of Technology, 2009
  • Honors
    • 2021: Journal of Rheology Publication Award

    • 2021: Dean's Award for Excellence in Research for Associate Professor, Grainger College of Engineering, University of Illinois at Urbana-Champaign

    • 2017: Presidential Early Career Award for Science and Engineering (PECASE)

    • 2016: Dean's Award for Research Excellence, Grainger College of Engineering, University of Illinois at Urbana-Champaign

    • 2014: Arthur B. Metzner Early Career Award, The Society of Rheology

    • 2014: NSF-CAREER Award

    • 2014: 3M Nontenured Faculty Award

    • 2014: DuPont Young Professor Award

  • Research

    Research areas:

    • Computation and applied math

    • Energy

    • Environment

    • Fluid mechanics

    Research interests:

    • Health and biology

    • Manufacturing

    • Security and defense

    • Solid mechanics and materials

    • Thermo and heat transfer

    Ewoldt conducts fundamental research in fluid mechanics, rheology, and soft matter. His work often involves interdisciplinary collaborations and is a combination of experiment and theory. Complex fluids are ubiquitous in nature and in man-made applications and therefore research extends from bioengineering to manufacturing and robotics.

  • 2024

    • Dynamic Covalent Bond Exchange Enhances Penetrant Diffusion in Dense Vitrimers Huang, J., Ramlawi, N., Sheridan, G. S., Chen, C., Ewoldt, R. H., Braun, P. V. and Evans, C. M., Feb 14 2023, In: Macromolecules. 56, 3, p. 1253-1262 10 p.
    • Exosome-coated oxygen nanobubble-laden hydrogel augments intracellular delivery of exosomes for enhanced wound healing Han, X., Saengow, C., Ju, L., Ren, W., Ewoldt, R. H. and Irudayaraj, J., Dec 2024, In: Nature communications. 15, 1, 3435.
    • Fluid convection driven by surface tension during free-surface frontal polymerization Gao, Y., Paul, J. E., Chen, M., Seth, A., Liu, Q., Hong, L., Chamorro, L. P., Ewoldt, R. H., Sottos, N. R. and Geubelle, P. H., Jul 2024, In: Mechanics of Materials. 194, 104987.
    • Frontal Polymerization of Stereoisomers: Distinct Microstructures and Properties in Endo- and Exo-Dicyclopentadiene Thermosets Wang, H. M., Suslick, B. A., Lessard, J. J., Yu, C. H., Saengow, C., Ewoldt, R. H. and Moore, J. S., Jan 9 2024, In: Macromolecules. 57, 1, p. 142-149 8 p.
    • Large amplitude oscillatory shear stress (LAOStress) analysis for an acid-curd Spanish cheese: Afuega'l Pitu atroncau blancu and roxu (PDO) Piñeiro-Lago, L., Ramlawi, N., Franco, I., Tovar, C. A., Campo-Deaño, L. and Ewoldt, R. H., Sep 2023, In: Food Hydrocolloids. 142, 108720.
    • Molecular Design of Multimodal Viscoelastic Spectra Using Vitrimers Porath, L. E., Ramlawi, N., Huang, J., Hossain, M. T., Derkaloustian, M., Ewoldt, R. H. and Evans, C. M., Feb 27 2024, In: Chemistry of Materials. 36, 4, p. 1966-1974 9 p.
    • Nano oxygen chamber by cascade reaction for hypoxia mitigation and reactive oxygen species scavenging in wound healing Han, X., Ju, L., Saengow, C., Ren, W., Ewoldt, R., Fan, T. and Irudayaraj, J., May 2024, In: Bioactive Materials. 35, p. 67-81 15 p.
    • Nuclear deformation regulates YAP dynamics in cancer associated fibroblasts Emon, B., Joy, M. S. H., Lalonde, L., Ghrayeb, A., Doha, U., Ladehoff, L., Brockstein, R., Saengow, C., Ewoldt, R. H. and Saif, M. T. A., Jan 1 2024, In: Acta Biomaterialia. 173, p. 93-108 16 p.
    • Protorheology Hossain, M. T. and Ewoldt, R. H., Jan 1 2024, In: Journal of Rheology. 68, 1, p. 113-144 32 p.
    • Reprocessability in Engineering Thermosets Achieved through Frontal Ring Opening Metathesis Polymerization Cooper, J. C., Paul, J. E., Ramlawi, N., Saengow, C., Sharma, A., Suslick, B. A., Ewoldt, R. H., Sottos, N. R. and Moore, J. S., Apr 23 2024, (E-pub ahead of print) In: Advanced Materials. 2402627.
    • Rheological modeling of frontal-polymerization-based direct ink writing of thermoset polymers Zakoworotny, M., Balta Bonner, F. J., Kumar, A., Aw, J. E., Tawfick, S. H., Ewoldt, R. H., Sottos, N. R. and Geubelle, P. H., Jan 5 2024, In: Computer Methods in Applied Mechanics and Engineering. 418, 116565.
    • Scale-Dependent Rheology of Synovial Fluid Lubricating Macromolecules Martin-Alarcon, L., Govedarica, A., Ewoldt, R. H., Bryant, S. L., Jay, G. D., Schmidt, T. A. and Trifkovic, M., May 23 2024, In: Small. 20, 21, 2306207.
    • Unraveling Reactivity Differences: Room-Temperature Ring-Opening Metathesis Polymerization (ROMP) versus Frontal ROMP Lessard, J. J., Mejia, E. B., Kim, A. J., Zhang, Z., Berkey, M. G., Medina-Barreto, Z. S., Ewoldt, R. H., Sottos, N. R. and Moore, J. S., Mar 20 2024, In: Journal of the American Chemical Society. 146, 11, p. 7216-7221 6 p.

    2023

    • Concentration-dependent Cycling of Phenothiazine-based Electrolytes in Nonaqueous Redox Flow Cells Preet Kaur, A., Neyhouse, B. J., Shkrob, I. A., Wang, Y., Harsha Attanayake, N., Kant Jha, R., Wu, Q., Zhang, L., Ewoldt, R. H., Brushett, F. R. and Odom, S. A., Mar 1 2023, In: Chemistry - An Asian Journal. 18, 5, e202201171.
    • Mechanisms of gill-clogging by hagfish slime Taylor, L., Chaudhary, G., Jain, G., Lowe, A., Hupe, A., Negishi, A., Zeng, Y., Ewoldt, R. H. and Fudge, D. S., 2023, In: Journal of the Royal Society Interface. 20, 200, 20220774.
    • Reversible Reactions, Mesh Size, and Segmental Dynamics Control Penetrant Diffusion in Ethylene Vitrimers Huang, J., Sheridan, G. S., Chen, C., Ramlawi, N., Ewoldt, R. H., Braun, P. V. and Evans, C. M., Jul 18 2023, In: ACS Macro Letters. 12, 7, p. 901-907 7 p.
    • Secondary Bubble Entrainment via Primary Bubble Bursting at a Viscoelastic Surface Ji, B., Yang, Z., Wang, Z., Ewoldt, R. H. and Feng, J., Sep 8 2023, In: Physical review letters. 131, 10, 104002.
    • Soft glassy materials with tunable extensibility Sen, S., Fernandes, R. R. and Ewoldt, R. H., Nov 30 2023, In: Soft Matter. 20, 1, p. 212-223 12 p.
    • Softening by charging: how collective modes of ionic association in concentrated redoxmer/electrolyte solutions define the structural and dynamic properties in different states of charge Farag, H., Kaur, A. P., Robertson, L. A., Sarnello, E., Liu, X., Wang, Y., Cheng, L., Shkrob, I. A., Zhang, L., Ewoldt, R. H., Li, T., Odom, S. A. and Z, Y., Jan 3 2023, In: Physical Chemistry Chemical Physics. 25, 5, p. 4243-4254 12 p.
    • Thixotropy, antithixotropy, and viscoelasticity in hysteresis Wang, Y. and Ewoldt, R. H., Nov 1 2023, In: Journal of Rheology. 67, 6, p. 1199-1219 21 p.

    2022

    • 3D Printing High-Resolution Conductive Elastomeric Structures with a Solid Particle-Free Emulsion Ink Wang, C., Chaudhary, G., Ewoldt, R. H. and Nuzzo, R. G., Mar 2022, In: Advanced Engineering Materials. 24, 3, 2100902.
    • Chemical Amplification of Subthreshold Base Triggers to Drive Sol-Gel Transitions in Polymers Lai, S., Chaudhary, G., Jiang, Z., Ewoldt, R. H. and Braun, P. V., Aug 1 2022, In: ACS Materials Letters. 4, 8, p. 1503-1510 8 p.
    • Do-it-yourself rheometry Hossain, M. T. and Ewoldt, R. H., May 1 2022, In: Physics of fluids. 34, 5, 053105.
    • Gelation under stress: impact of shear flow on the formation and mechanical properties of methylcellulose hydrogels Nelson, A. Z., Wang, Y., Wang, Y., Margotta, A. S., Sammler, R. L., Izmitli, A., Katz, J. S., Curtis-Fisk, J., Li, Y. and Ewoldt, R. H., Feb 21 2022, In: Soft Matter. 18, 7, p. 1554-1565 12 p.
    • New insights on carbon black suspension rheology - Anisotropic thixotropy and antithixotropy Wang, Y. and Ewoldt, R. H., Sep 1 2022, In: Journal of Rheology. 66, 5, p. 937-953 17 p.
    • Particle contact dynamics as the origin for noninteger power expansion rheology in attractive suspension networks Natalia, I., Ewoldt, R. H. and Koos, E., Jan 1 2022, In: Journal of Rheology. 66, 1, p. 17-30 14 p.
    • Relaxation of Vitrimers with Kinetically Distinct Mixed Dynamic Bonds Porath, L., Huang, J., Ramlawi, N., Derkaloustian, M., Ewoldt, R. H. and Evans, C. M., Jun 14 2022, In: Macromolecules. 55, 11, p. 4450-4458 9 p.
    • Self-Regulative Direct Ink Writing of Frontally Polymerizing Thermoset Polymers Aw, J. E., Zhang, X., Nelson, A. Z., Dean, L. M., Yourdkhani, M., Ewoldt, R. H., Geubelle, P. H. and Sottos, N. R., Sep 2022, In: Advanced Materials Technologies.
    • Thixotropic spectra and Ashby-style charts for thixotropy Sen, S. and Ewoldt, R. H., Sep 1 2022, In: Journal of Rheology. 66, 5, p. 1041-1053 13 p.

    2021

    • Crowded electrolytes containing redoxmers in different states of charge: Solution structure, properties, and fundamental limits on energy density Shkrob, I. A., Robertson, L. A., Yu, Z., Assary, R. S., Cheng, L., Zhang, L., Sarnello, E., Liu, X., Li, T., Preet Kaur, A., Malsha Suduwella, T., Odom, S. A., Wang, Y., Ewoldt, R. H., Farag, H. M. and Z, Y., Jul 15 2021, In: Journal of Molecular Liquids. 334, 116533.
    • Design framework and clinical evaluation of a passive hydraulic patient simulator for biceps spasticity assessment training Pei, Y., Ewoldt, R. H., Zallek, C. M. and Hsiao-Wecksler, E. T., Aug 1 2021, In: Journal of Mechanisms and Robotics. 13, 4, 041006.
    • Designing Complex Fluids Ewoldt, R. H. and Saengow, C., 2021, In: Annual Review of Fluid Mechanics. 54, p. 413-441 29 p.
    • Dual function organic active materials for nonaqueous redox flow batteries Attanayake, N. H., Liang, Z., Wang, Y., Kaur, A. P., Parkin, S. R., Mobley, J. K., Ewoldt, R. H., Landon, J. and Odom, S. A., 2021, In: Materials Advances. 2, 4, p. 1390-1401 12 p.
    • Experimental Protocols for Studying Organic Non-aqueous Redox Flow Batteries Li, M., Odom, S. A., Pancoast, A. R., Robertson, L. A., Vaid, T. P., Agarwal, G., Doan, H. A., Wang, Y., Suduwella, T. M., Bheemireddy, S. R., Ewoldt, R. H., Assary, R. S., Zhang, L., Sigman, M. S. and Minteer, S. D., Nov 12 2021, In: ACS Energy Letters. 6, 11, p. 3932-3943 12 p.
    • Linear and nonlinear viscoelasticity of concentrated thermoresponsive microgel suspensions Chaudhary, G., Ghosh, A., Kang, J. G., Braun, P. V., Ewoldt, R. H. and Schweizer, K. S., Nov 2021, In: Journal of Colloid And Interface Science. 601, p. 886-898 13 p.
    • TEMPO allegro: liquid catholyte redoxmers for nonaqueous redox flow batteries Zhao, Y., Zhang, J., Agarwal, G., Yu, Z., Corman, R. E., Wang, Y., Robertson, L. A., Shi, Z., Doan, H. A., Ewoldt, R. H., Shkrob, I. A., Assary, R. S., Cheng, L., Srinivasan, V., Babinec, S. J. and Zhang, L., Aug 21 2021, In: Journal of Materials Chemistry A. 9, 31, p. 16769-16775 7 p.
    • Thixotropy in viscoplastic drop impact on thin films Sen, S., Morales, A. G. and Ewoldt, R. H., Apr 2021, In: Physical Review Fluids. 6, 4, 043301.

    2020

    • Base-triggered self-amplifying degradable polyurethanes with the ability to translate local stimulation to continuous long-range degradation Xu, Y., Sen, S., Wu, Q., Zhong, X., Ewoldt, R. H. and Zimmerman, S. C., Mar 28 2020, In: Chemical Science. 11, 12, p. 3326-3331 6 p.
    • Exploiting Nonlinear Elasticity for Anomalous Magnetoresponsive Stiffening Chaudhary, G., Bharadwaj, N. A., Braun, P. V. and Ewoldt, R. H., Nov 17 2020, In: ACS Macro Letters. 9, 11, p. 1632-1637 6 p.
    • Operating windows for oscillatory interfacial shear rheology Renggli, D., Alicke, A., Ewoldt, R. H. and Vermant, J., Jan 1 2020, In: Journal of Rheology. 64, 1, p. 141-160 20 p.
    • Passive Hydraulic Training Simulator for Upper Arm Spasticity Liang, J., Pei, Y., Ewoldt, R. H., Tippett, S. R. and Hsiao-Wecksler, E. T., Aug 1 2020, In: Journal of Mechanisms and Robotics. 12, 4, 045001.
    • Questioning a fundamental assumption of rheology: Observation of noninteger power expansions Natalia, I., Ewoldt, R. H. and Koos, E., May 1 2020, In: Journal of Rheology. 64, 3, p. 625-635 11 p.
    • Self-Assembled Solute Networks in Crowded Electrolyte Solutions and Nanoconfinement of Charged Redoxmer Molecules Shkrob, I. A., Li, T., Sarnello, E., Robertson, L. A., Zhao, Y., Farag, H., Yu, Z., Zhang, J., Bheemireddy, S. R., Z, Y., Assary, R. S., Ewoldt, R. H., Cheng, L. and Zhang, L., Nov 12 2020, In: The journal of physical chemistry. B. 124, 45, p. 10226-10236 11 p.
    • The weakly nonlinear response and nonaffine interpretation of the Johnson-Segalman/Gordon-Schowalter model Ramlawi, N., Bharadwaj, N. A. and Ewoldt, R. H., Nov 1 2020, In: Journal of Rheology. 64, 6, p. 1409-1424 16 p.
    • Viscoplastic drop impact on thin films Sen, S., Morales, A. G. and Ewoldt, R. H., May 25 2020, In: Journal of Fluid Mechanics. 891, A27.
    • Viscous flow properties and hydrodynamic diameter of phenothiazine-based redox-active molecules in different supporting salt environments Wang, Y., Kaur, A. P., Harsha Attanayake, N., Yu, Z., Suduwella, T. M., Cheng, L., Odom, S. A. and Ewoldt, R. H., Aug 1 2020, In: Physics of fluids. 32, 8, 10.1063_5.0010168.

    2019

    • Acid-Triggered, Acid-Generating, and Self-Amplifying Degradable Polymers Miller, K. A., Morado, E. G., Samanta, S. R., Walker, B. A., Nelson, A. Z., Sen, S., Tran, D. T., Whitaker, D. J., Ewoldt, R. H., Braun, P. V. and Zimmerman, S. C., Feb 20 2019, In: Journal of the American Chemical Society. 141, 7, p. 2838-2842 5 p.
    • Designing and transforming yield-stress fluids Nelson, A. Z., Schweizer, K. S., Rauzan, B. M., Nuzzo, R. G., Vermant, J. and Ewoldt, R. H., Oct 2019, In: Current Opinion in Solid State and Materials Science. 23, 5, 100758.
    • Linear and nonlinear rheology and structural relaxation in dense glassy and jammed soft repulsive pNIPAM microgel suspensions Ghosh, A., Chaudhary, G., Kang, J. G., Braun, P. V., Ewoldt, R. H. and Schweizer, K. S., 2019, In: Soft Matter. 15, 5, p. 1038-1052 15 p.
    • Low Reynolds number friction reduction with polymers and textures Schuh, J. K. and Ewoldt, R. H., Nov 2019, In: Journal of Non-Newtonian Fluid Mechanics. 273, 104167.
    • Mapping linear viscoelasticity for design and tactile intuition Corman, R. E. and Ewoldt, R. H., 2019, In: Applied Rheology. 29, 1, p. 141-161 21 p.
    • Modulating Noncovalent Cross-links with Molecular Switches Epstein, E. S., Martinetti, L., Kollarigowda, R. H., Carey-De La Torre, O., Moore, J. S., Ewoldt, R. H. and Braun, P. V., Feb 27 2019, In: Journal of the American Chemical Society. 141, 8, p. 3597-3604 8 p.
    • On fitting data for parameter estimates: residual weighting and data representation Singh, P. K., Soulages, J. M. and Ewoldt, R. H., Jul 1 2019, In: Rheologica Acta. 58, 6-7, p. 341-359 19 p.
    • Simultaneous design of non-Newtonian lubricant and surface texture using surrogate-based multiobjective optimization Lee, Y. H., Schuh, J. K., Ewoldt, R. H. and Allison, J. T., Jul 15 2019, In: Structural and Multidisciplinary Optimization. 60, 1, p. 99-116 18 p.
    • Thermoresponsive Stiffening with Microgel Particles in a Semiflexible Fibrin Network Chaudhary, G., Ghosh, A., Bharadwaj, N. A., Kang, J. G., Braun, P. V., Schweizer, K. S. and Ewoldt, R. H., Apr 23 2019, In: Macromolecules. 52, 8, p. 3029-3041 13 p.
    • Time-strain separability in medium-amplitude oscillatory shear Martinetti, L. and Ewoldt, R. H., Feb 1 2019, In: Physics of fluids. 31, 2, 021213.
    • Uncertainty propagation in simulation predictions of generalized Newtonian fluid flows Kim, J., Singh, P. K., Freund, J. B. and Ewoldt, R. H., Sep 2019, In: Journal of Non-Newtonian Fluid Mechanics. 271, 104138.
    • Unravelling hagfish slime Chaudhary, G., Ewoldt, R. H. and Thiffeault, J. L., Jan 1 2019, In: Journal of the Royal Society Interface. 16, 150, 20180710.
    • Vibration of fresh concrete understood through the paradigm of granular physics Koch, J. A., Castaneda, D. I., Ewoldt, R. H. and Lange, D. A., Jan 2019, In: Cement and Concrete Research. 115, p. 31-42 12 p.

    2018

    • Attitude control system complexity reduction via tailored viscoelastic damping co-design Lin, C., Herber, D. R., Vedant, V., Lee, Y. H., Ghosh, A., Ewoldt, R. H. and Allison, J. T., 2018, Guidance, navigation, and control, 2018. Walker, C. A. H. (ed.). Univelt Inc., p. 731-743 13 p. (Advances in the Astronautical Sciences; vol. 164).
    • Concentration-independent mechanics and structure of hagfish slime Chaudhary, G., Fudge, D. S., Macias-Rodriguez, B. and Ewoldt, R. H., Oct 1 2018, In: Acta Biomaterialia. 79, p. 123-134 12 p.
    • Continuous relaxation spectra for constitutive models in medium-amplitude oscillatory shear Martinetti, L., Soulages, J. M. and Ewoldt, R. H., Sep 1 2018, In: Journal of Rheology. 62, 5, p. 1271-1298 28 p.
    • Dynamic Remodeling of Covalent Networks via Ring-Opening Metathesis Polymerization Liu, H., Nelson, A. Z., Ren, Y., Yang, K., Ewoldt, R. H. and Moore, J. S., Aug 21 2018, In: ACS Macro Letters. 7, 8, p. 933-937 5 p.
    • Extending yield-stress fluid paradigms Nelson, A. Z., Bras, R. E., Liu, J. and Ewoldt, R. H., Jan 1 2018, In: Journal of Rheology. 62, 1, p. 357-369 13 p.
    • Field sensitivity of flow predictions to rheological parameters Freund, J. B., Kim, J. and Ewoldt, R. H., Jul 2018, In: Journal of Non-Newtonian Fluid Mechanics. 257, p. 71-82 12 p.
    • First-harmonic nonlinearities can predict unseen third-harmonics in medium-amplitude oscillatory shear (MAOS) Carey-De La Torre, O. and Ewoldt, R. H., Feb 1 2018, In: Korea Australia Rheology Journal. 30, 1, p. 1-10 10 p.
    • Frequency-sweep medium-amplitude oscillatory shear (MAOS) Singh, P. K., Soulages, J. M. and Ewoldt, R. H., Jan 1 2018, In: Journal of Rheology. 62, 1, p. 277-293 17 p.
    • Inferring the Nonlinear Mechanisms of a Reversible Network Martinetti, L., Carey-De La Torre, O., Schweizer, K. S. and Ewoldt, R. H., Nov 13 2018, In: Macromolecules. 51, 21, p. 8772-8789 18 p.
    • Mechanically active materials in three-dimensional mesostructures Ning, X., Yu, X., Wang, H., Sun, R., Corman, R. E., Li, H., Lee, C. M., Xue, Y., Chempakasseril, A., Yao, Y., Zhang, Z., Luan, H., Wang, Z., Xia, W., Feng, X., Ewoldt, R. H., Huang, Y., Zhang, Y. and Rogers, J. A., Sep 14 2018, In: Science Advances. 4, 9, eaat8313.
    • Modulation of the Electrochemical Reactivity of Solubilized Redox Active Polymers via Polyelectrolyte Dynamics Burgess, M., Hernández-Burgos, K., Schuh, J. K., Davila, J., Montoto, E. C., Ewoldt, R. H. and Rodríguez-López, J., Feb 14 2018, In: Journal of the American Chemical Society. 140, 6, p. 2093-2104 12 p.
    • Nonlinear viscoelasticity of fat crystal networks Macias-Rodriguez, B. A., Ewoldt, R. H. and Marangoni, A. G., Mar 1 2018, In: Rheologica Acta. 57, 3, p. 251-266 16 p.
    • Optomechanical microrheology of single adherent cancer cells Adeniba, O. O., Corbin, E. A., Ewoldt, R. H. and Bashir, R., Mar 1 2018, In: APL Bioengineering. 2, 1, 016108.
    • Particle-Free Emulsions for 3D Printing Elastomers Rauzan, B. M., Nelson, A. Z., Lehman, S. E., Ewoldt, R. H. and Nuzzo, R. G., May 24 2018, In: Advanced Functional Materials. 28, 21, 1707032.
    • Quantifying compressive forces between living cell layers and within tissues using elastic round microgels Mohagheghian, E., Luo, J., Chen, J., Chaudhary, G., Chen, J., Sun, J., Ewoldt, R. H. and Wang, N., Dec 1 2018, In: Nature communications. 9, 1, 1878.
    • Revised design of a passive hydraulic training simulator of biceps spasticity Pei, Y., Ewoldt, R. H., Zallek, C. M. and Hsiao-Wecksler, E. T., 2018.
    • Simultaneous design of non-newtonian lubricant and surface texture using surrogate-based optimization Lee, Y. H., Schuh, J. K., Ewoldt, R. H. and Allison, J. T., 2018, AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials. American Institute of Aeronautics and Astronautics Inc, AIAA, (AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2018).
    • Solution Properties and Practical Limits of Concentrated Electrolytes for Nonaqueous Redox Flow Batteries Zhang, J., Corman, R. E., Schuh, J. K., Ewoldt, R. H., Shkrob, I. A. and Zhang, L., Apr 19 2018, In: Journal of Physical Chemistry C. 122, 15, p. 8159-8172 14 p.

    2017

    • A Multi Objective Adaptive Surrogate Modeling-Based Optimization (MO-ASMO) framework using efficient sampling strategies Lee, Y. H., Corman, R. E., Ewoldt, R. H. and Allison, J. T., 2017, 43rd Design Automation Conference. American Society of Mechanical Engineers (ASME), (Proceedings of the ASME Design Engineering Technical Conference; vol. 2B-2017).
    • A strain stiffening theory for transient polymer networks under asymptotically nonlinear oscillatory shear Bharadwaj, N. A., Schweizer, K. S. and Ewoldt, R. H., Jul 1 2017, In: Journal of Rheology. 61, 4, p. 643-665 23 p.
    • Assessing the impact of electrolyte conductivity and viscosity on the reactor cost and pressure drop of redox-active polymer flow batteries Iyer, V. A., Schuh, J. K., Montoto, E. C., Pavan Nemani, V., Qian, S., Nagarjuna, G., Rodríguez-López, J., Ewoldt, R. H. and Smith, K. C., 2017, In: Journal of Power Sources. 361, p. 334-344 11 p.
    • Design of yield-stress fluids: A rheology-to-structure inverse problem Nelson, A. Z. and Ewoldt, R. H., 2017, In: Soft Matter. 13, 41, p. 7578-7594 17 p. Research output: Contribution to journal › Article › peer-review
    • Design-Driven Modeling of Surface-Textured Full-Film Lubricated Sliding: Validation and Rationale of Nonstandard Thrust Observations Schuh, J. K., Lee, Y. H., Allison, J. T. and Ewoldt, R. H., Jun 2017, In: Tribology Letters. 65, 2, 35.
    • Enhancing Full-Film Lubrication Performance Via Arbitrary Surface Texture Design Lee, Y. H., Schuh, J. K., Ewoldt, R. H. and Allison, J. T., May 1 2017, In: Journal of Mechanical Design, Transactions of the ASME. 139, 5, 053401.
    • Integration of colloids into a semi-flexible network of fibrin Bharadwaj, N. A. K., Kang, J. G., Hatzell, M. C., Schweizer, K. S., Braun, P. V. and Ewoldt, R. H., 2017, In: Soft Matter. 13, 7, p. 1430-1443 14 p.
    • Mapping thixo-elasto-visco-plastic behavior Ewoldt, R. H. and McKinley, G. H., Mar 1 2017, In: Rheologica Acta. 56, 3, p. 195-210 16 p.
    • Quantitative measures of yield-stress fluid drop impacts on coated surfaces Blackwell, B. C., Deetjen, M. E., Gaudio, J. E. and Ewoldt, R. H., 2017, In: Atomization and Sprays. 27, 4, p. 337-343 7 p.
    • Regulating dynamic signaling between hematopoietic stem cells and niche cells via a hydrogel matrix Mahadik, B. P., Bharadwaj, N. A. K., Ewoldt, R. H. and Harley, B. A. C., May 1 2017, In: Biomaterials. 125, p. 54-64 11 p.
    • Self-adaptive hydrogels to mineralization Shoaib, T., Carmichael, A., Corman, R. E., Shen, Y., Nguyen, T. H., Ewoldt, R. H. and Espinosa-Marzal, R. M., 2017, In: Soft Matter. 13, 32, p. 5469-5480 12 p.

    2016

    • Asymmetric surface textures decrease friction with Newtonian fluids in full film lubricated sliding contact Schuh, J. K. and Ewoldt, R. H., May 1 2016, In: Tribology International. 97, p. 490-498 9 p.
    • Automatic control: The vertebral column of dogfish sharks behaves as a continuously variable transmission with smoothly shifting functions Porter, M. E., Ewoldt, R. H. and Long, J. H., Sep 15 2016, In: Journal of Experimental Biology. 219, 18, p. 2908-2919 12 p.
    • Design and modeling of a passive hydraulic device for muscle spasticity simulation Liang, J., Ewoldt, R. H., Tippett, S. R. and Hsiao-Wecksler, E. T., Jun 1 2016, In: Journal of Medical Devices, Transactions of the ASME. 10, 2, 020954.
    • Dynamic mechanical measurement of the viscoelasticity of single adherent cells Corbin, E. A., Adeniba, O. O., Ewoldt, R. H. and Bashir, R., Feb 29 2016, In: Applied Physics Letters. 108, 9, 093701.
    • Effect of the environmental humidity on the bulk, interfacial and nanoconfined properties of an ionic liquid Jurado, L. A., Kim, H., Rossi, A., Arcifa, A., Schuh, J. K., Spencer, N. D., Leal, C., Ewoldt, R. H. and Espinosa-Marzal, R. M., 2016, In: Physical Chemistry Chemical Physics. 18, 32, p. 22719-22730 12 p.
    • Impacts of yield-stress fluid drops on permeable mesh substrates Blackwell, B. C., Nadhan, A. E. and Ewoldt, R. H., Dec 1 2016, In: Journal of Non-Newtonian Fluid Mechanics. 238, p. 107-114 8 p.
    • Intrinsic nonlinearities in the mechanics of hard sphere suspensions Kumar, M. A., Ewoldt, R. H. and Zukoski, C. F., 2016, In: Soft Matter. 12, 36, p. 7655-7662 8 p.
    • Non-integer asymptotic scaling of a thixotropic-viscoelastic model in large-amplitude oscillatory shear Blackwell, B. C. and Ewoldt, R. H., Jan 1 2016, In: Journal of Non-Newtonian Fluid Mechanics. 227, p. 80-89 10 p.
    • Predictions for the northern coast of the shear rheology map: XXLAOS Ewoldt, R. H., Jul 10 2016, In: Journal of Fluid Mechanics. 798, p. 1-4 4 p.
    • Setting material function design targets for linear viscoelastic materials and structures Corman, R. E., Rao, L., Ashwin Bharadwaj, N., Allison, J. T. and Ewoldt, R. H., May 2016, In: Journal of Mechanical Design. 138, 5, 4032698.
    • Shape parameterization comparison for full-film lubrication texture design Lee, Y. H., Schuh, J., Ewoldt, R. H. and Allison, J. T., 2016, 42nd Design Automation Conference. American Society of Mechanical Engineers (ASME), (Proceedings of the ASME Design Engineering Technical Conference; vol. 2B-2016).
    • Temporal Modulation of Stem Cell Activity Using Magnetoactive Hydrogels Abdeen, A. A., Lee, J., Bharadwaj, N. A., Ewoldt, R. H. and Kilian, K. A., Oct 12 2016, In: Advanced Healthcare Materials. 5, 19, p. 2536-2544 9 p.

    2015

    • Constitutive model fingerprints in medium-amplitude oscillatory shear Bharadwaj, N. A. and Ewoldt, R. H., Mar 1 2015, In: Journal of Rheology. 59, 2, p. 557-592 36 p., 4903346.
    • Design and fabrication of ceramic beads by the vibration method Santos, C. J. E., Nelson, A. Z., Mendoza, E., Ewoldt, R. H. and Kriven, W. M., Nov 1 2015, In: Journal of the European Ceramic Society. 35, 13, p. 3587-3594 8 p.
    • On using adaptive surrogate modeling in design for efficient fluid power Rao, L. G., Schuh, J., Ewoldt, R. H. and Allison, J. T., 2015, 41st Design Automation Conference. American Society of Mechanical Engineers (ASME), (Proceedings of the ASME Design Engineering Technical Conference; vol. 2B-2015).
    • Shear stress characteristics of microtextured surfaces in gap-controlled hydrodynamic lubrication Johnston, M. T., King, W. P. and Ewoldt, R. H., Feb 2015, In: Tribology International. 82, PA, p. 123-132 10 p.
    • Single-point parallel disk correction for asymptotically nonlinear oscillatory shear Bharadwaj, N. A. and Ewoldt, R. H., Mar 2015, In: Rheologica Acta. 54, 3, p. 223-233 11 p.
    • Sticking and splashing in yield-stress fluid drop impacts on coated surfaces Blackwell, B. C., Deetjen, M. E., Gaudio, J. E. and Ewoldt, R. H., Apr 6 2015, In: Physics of fluids. 27, 4, 043101.

    2014

    • A critical gel fluid with high extensibility: The rheology of chewing gum Martinetti, L., Mannion, A. M., Voje, W. E., Xie, R., Ewoldt, R. H., Morgret, L. D., Bates, F. S. and Macosko, C. W., Jul 2014, In: Journal of Rheology. 58, 4, p. 821-838 18 p.
    • A simple thixotropic-viscoelastic constitutive model produces unique signatures in large-amplitude oscillatory shear (LAOS) Blackwell, B. C. and Ewoldt, R. H., Jun 2014, In: Journal of Non-Newtonian Fluid Mechanics. 208-209, p. 27-41 15 p.
    • At the Crossroads: Interdisciplinary Paths to Soft Robots Trimmer, B., Ewoldt, R. H., Kovac, M., Lipson, H., Lu, N., Shahinpoor, M. and Majidi, C., Mar 1 2014, In: Soft Robotics. 1, 1, p. 63-69 7 p.
    • Extremely Soft: Design with Rheologically Complex Fluids Ewoldt, R. H., Mar 1 2014, In: Soft Robotics. 1, 1, p. 12-20 9 p.
    • Plasmonic optical trapping in biologically relevant media Roxworthy, B. J., Johnston, M. T., Lee-Montiel, F. T., Ewoldt, R. H., Imoukhuede, P. I. and Toussaint, K. C., Apr 7 2014, In: PloS one. 9, 4, e93929.
    • The general low-frequency prediction for asymptotically nonlinear material functions in oscillatory shear Bharadwaj, N. A. and Ewoldt, R. H., Jul 2014, In: Journal of Rheology. 58, 4, p. 891-910 20 p.

    2013

    • Defining nonlinear rheological material functions for oscillatory shear Ewoldt, R. H., Jan 2013, In: Journal of Rheology. 57, 1, p. 177-195 19 p.
    • Defining nonlinear rheological material functions for oscillatory shear Ewoldt, R. H., Jan 2013, In: Journal of Rheology. 57, 1, p. 177-195 19 p.
    • Describing and prescribing the constitutive response of yield stress fluids using large amplitude oscillatory shear stress (LAOStress) Dimitriou, C. J., Ewoldt, R. H. and McKinley, G. H., Jan 2013, In: Journal of Rheology. 57, 1, p. 27-70 44 p.
    • Early-stage design of rheologically complex materials via material function design targets Bharadwaj, N. A., Allison, J. T. and Ewoldt, R. H., 2013, 39th Design Automation Conference. American Society of Mechanical Engineers, V03AT03A058. (Proceedings of the ASME Design Engineering Technical Conference; vol. 3 A).
    • Low-dimensional intrinsic material functions for nonlinear viscoelasticity Ewoldt, R. H. and Bharadwaj, N. A., Mar 2013, In: Rheologica Acta. 52, 3, p. 201-219 19 p.
    • Precision rheometry: Surface tension effects on low-torque measurements in rotational rheometers Johnston, M. T. and Ewoldt, R. H., Nov 2013, In: Journal of Rheology. 57, 6, p. 1515-1532 18 p.
    • Reactive coupling between immiscible polymer chains: Acceleration by compressive flow Song, J., Baker, A. M., Macosko, C. W. and Ewoldt, R. H., Sep 2013, In: AIChE Journal. 59, 9, p. 3391-3402 12 p.

    2012

    • Nanometer-scale flow of molten polyethylene from a heated atomic force microscope tip Felts, J. R., Somnath, S., Ewoldt, R. H. and King, W. P., Jun 1 2012, In: Nanotechnology. 23, 21, 215301.

    2011

    • A review of nonlinear oscillatory shear tests: Analysis and application of large amplitude oscillatory shear (LAOS) Hyun, K., Wilhelm, M., Klein, C. O., Cho, K. S., Nam, J. G., Ahn, K. H., Lee, S. J., Ewoldt, R. H. and McKinley, G. H., Dec 2011, In: Progress in Polymer Science (Oxford). 36, 12, p. 1697-1753 57 p.
    • Controllable adhesion using field-activated fluids Ewoldt, R. H., Tourkine, P., McKinley, G. H. and Hosoi, A. E., Jul 27 2011, In: Physics of fluids. 23, 7, 073104.
    • Flow accelerates adhesion between functional polyethylene and polyurethane Song, J., Ewoldt, R. H., Hu, W., Craig Silvis, H. and Macosko, C. W., Dec 2011, In: AIChE Journal. 57, 12, p. 3496-3506 11 p.
    • Flow accelerates the reaction kinetics of multiphase polymer systems Song, J., Ewoldt, R. H. and Macosko, C. W., 2011, Materials Engineering and Sciences Division - Core Programming Topic at the 2011 AIChE Annual Meeting. AIChE, p. 655 1 p. (Materials Engineering and Sciences Division - Core Programming Topic at the 2011 AIChE Annual Meeting; vol. 2).
    • Flow accelerates the reaction kinetics of multiphase polymer systems Song, J., Ewoldt, R. H. and Macosko, C. W., 2011, Process Development Division - Core Programming Topic at the 2011 AIChE Annual Meeting. AIChE, p. 439 1 p. (Process Development Division - Core Programming Topic at the 2011 AIChE Annual Meeting).
    • How Dr. Malcom M. Cross may have tackled the development of " An apparent viscosity function for shear thickening fluids" Galindo-Rosales, F. J., Rubio-Hernández, F. J., Sevilla, A. and Ewoldt, R. H., Dec 2011, In: Journal of Non-Newtonian Fluid Mechanics. 166, 23-24, p. 1421-1424 4 p.
    • Large amplitude oscillatory shear flow of gluten dough: A model power-law gel Ng, T. S. K., McKinley, G. H. and Ewoldt, R. H., May 2011, In: Journal of Rheology. 55, 3, p. 627-654 28 p.
    • Non-linear viscoelasticity of hagfish slime Ewoldt, R. H., Winegard, T. M. and Fudge, D. S., May 2011, In: International Journal of Non-Linear Mechanics. 46, 4, p. 627-636 10 p.

    2010

    • A microcomposite hydrogel for repeated on-demand ultrasound-triggered drug delivery Epstein-Barash, H., Orbey, G., Polat, B. E., Ewoldt, R. H., Feshitan, J., Langer, R., Borden, M. A. and Kohane, D. S., Jul 2010, In: Biomaterials. 31, 19, p. 5208-5217 10 p.
    • Large amplitude oscillatory shear of pseudoplastic and elastoviscoplastic materials Ewoldt, R. H., Winter, P., Maxey, J. and McKinley, G. H., Jan 2010, In: Rheologica Acta. 49, 2, p. 191-212 22 p.
    • On secondary loops in LAOS via self-intersection of Lissajous-Bowditch curves Ewoldt, R. H. and McKinley, G. H., Jan 2010, In: Rheologica Acta. 49, 2, p. 213-219 7 p.

    2009

    • From ultra-soft slime to hard a-keratins: The many lives of intermediate filaments Fudge, D. S., Winegard, T., Ewoldt, R. H., Beriault, D., Szewciw, L. and McKinley, G. H., Jul 2009, In: Integrative and comparative biology. 49, 1, p. 32-39 8 p.
    • Helicobacter pylori moves through mucus by reducing mucin viscoelasticity Celli, J. P., Turner, B. S., Afdhal, N. H., Keates, S., Ghiran, I., Kelly, C. P., Ewoldt, R. H., McKinley, G. H., So, P., Erramilli, S. and Bansil, R., Aug 25 2009, In: Proceedings of the National Academy of Sciences of the United States of America. 106, 34, p. 14321-14326 6 p.
    • Nonlinear viscoelastic biomaterials: Meaningful characterization and engineering inspiration Ewoldt, R. H., Hosoi, A. E. and McKinley, G. H., Jul 2009, In: Integrative and comparative biology. 49, 1, p. 40-50 11 p.

    2008

    • An implantable port for office laparoscopy: The abview access port Shah, A. M., Ball, N., Ewoldt, R., Ng, S. K., Powers, B., Fuller, A., Sieden, M., Anand, A. and Slocum, A., Jun 1 2008, In: Journal of Medical Devices, Transactions of the ASME. 2, 2, p. 1 1 p.
    • An ontology for large amplitude oscillatory shear flow Ewoldt, R. H., Hosoi, A. E. and McKinley, G. H., 2008, The XVth International Congress on Rheology - The Society of Rheology 80th Annual Meeting. p. 1135-1137 3 p. (AIP Conference Proceedings; vol. 1027).
    • New measures for characterizing nonlinear viscoelasticity in large amplitude oscillatory shear Ewoldt, R. H., Hosoi, A. E. and McKinley, G. H., 2008, In: Journal of Rheology. 52, 6, p. 1427-1458 32 p.
    • Probing shear-banding transitions of entangled liquids using Large Amplitude Oscillatory Shearing (LAOS) deformations Zhou, L., Ewoldt, R. H., Cook, L. P. and McKinley, G. H., 2008, The XVth International Congress on Rheology - The Society of Rheology 80th Annual Meeting. p. 189-191 3 p. (AIP Conference Proceedings; vol. 1027).

    2007

    • Rheological fingerprinting of gastropod pedal mucus and synthetic complex fluids for biomimicking adhesive locomotion Ewoldt, R. H., Clasen, C., Hosoi, A. E. and McKinley, G. H., 2007, In: Soft Matter. 3, 5, p. 634-643 10 p.
    • Rheology of gastric mucin exhibits a pH-dependent sol-gel transition Celli, J. P., Turner, B. S., Afdhal, N. H., Ewoldt, R. H., McKinley, G. H., Bansil, R. and Erramilli, S., May 2007, In: Biomacromolecules. 8, 5, p. 1580-1586 7 p.

    2005

    • Turbulent and transitional velocity measurements in a rectangular microchannel using microscopic particle image velocimetry Li, H., Ewoldt, R. and Olsen, M. G., Apr 2005, In: Experimental Thermal and Fluid Science. 29, 4, p. 435-446 12 p.