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Research Output 2005 2019

2016

Shape parameterization comparison for full-film lubrication texture design

Lee, Y. H., Schuh, J., Ewoldt, R. H. & Allison, J., Jan 1 2016, 42nd Design Automation Conference. American Society of Mechanical Engineers (ASME), (Proceedings of the ASME Design Engineering Technical Conference; vol. 2B-2016).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Lubrication
Parameterization
Texture
Textures
Friction

Temporal Modulation of Stem Cell Activity Using Magnetoactive Hydrogels

Abdeen, A. A., Lee, J., Bharadwaj, N. A., Ewoldt, R. H. & Kilian, K. A., Oct 12 2016, In : Advanced Healthcare Materials. 5, 19, p. 2536-2544 9 p.

Research output: Contribution to journalArticle

Hydrogels
Magnets
Hydrogel
Elasticity
Magnetic Fields
2015

Constitutive model fingerprints in medium-amplitude oscillatory shear

Bharadwaj, N. A. & Ewoldt, R. H., Mar 1 2015, In : Journal of Rheology. 59, 2, p. 557-592 36 p., 4903346.

Research output: Contribution to journalArticle

Constitutive models
shear
signatures
nonlinearity
Hydrogel

Design and fabrication of ceramic beads by the vibration method

Santos, C. J. E., Nelson, A. Z., Mendoza, E., Ewoldt, R. H. & Kriven, W. M., Nov 1 2015, In : Journal of the European Ceramic Society. 35, 13, p. 3587-3594 8 p.

Research output: Contribution to journalArticle

Aluminum Oxide
Alumina
Fabrication
Phosmet
Flow of solids

On using adaptive surrogate modeling in design for efficient fluid power

Rao, L. G., Schuh, J., Ewoldt, R. H. & Allison, J., Jan 1 2015, 41st Design Automation Conference. American Society of Mechanical Engineers (ASME), (Proceedings of the ASME Design Engineering Technical Conference; vol. 2B-2015).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fluid
Fluids
Modeling
Newtonian Fluid
Computational Fluid Dynamics

Shear stress characteristics of microtextured surfaces in gap-controlled hydrodynamic lubrication

Johnston, M. T., King, W. P. & Ewoldt, R. H., Jan 1 2015, In : Tribology International. 82, PA, p. 123-132 10 p.

Research output: Contribution to journalArticle

lubrication
shear stress
Lubrication
Shear stress
Reynolds number

Single-point parallel disk correction for asymptotically nonlinear oscillatory shear

Bharadwaj, N. A. & Ewoldt, R. H., Jan 1 2015, In : Rheologica Acta. 54, 3, p. 223-233 11 p.

Research output: Contribution to journalArticle

shear
Polymer melts
fixtures
Amplification
Cones

Sticking and splashing in yield-stress fluid drop impacts on coated surfaces

Blackwell, B. C., Deetjen, M. E., Gaudio, J. E. & Ewoldt, R. H., Apr 6 2015, In : Physics of fluids. 27, 4, 1.4916620.

Research output: Contribution to journalArticle

splashing
Yield stress
Fluids
fluids
Coatings
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. & Macosko, C. W., Jan 1 2014, In : Journal of Rheology. 58, 4, p. 821-838 18 p.

Research output: Contribution to journalArticle

mastication
Mastication
Rheology
rheology
Gels
Viscoelastic Model
Constitutive Model
Constitutive models
Signature
signatures

At the Crossroads: Interdisciplinary Paths to Soft Robots

Trimmer, B., Ewoldt, R. H., Kovac, M., Lipson, H., Lu, N., Shahinpoor, M. & Majidi, C., Mar 1 2014, In : Soft Robotics. 1, 1, p. 63-69 7 p.

Research output: Contribution to journalComment/debate

Robots

Extremely Soft: Design with Rheologically Complex Fluids

Ewoldt, R. H., Mar 1 2014, In : Soft Robotics. 1, 1, p. 12-20 9 p.

Research output: Contribution to journalReview article

Robotics
Mucins
Cytoplasm
Gels
Fluids

Plasmonic optical trapping in biologically relevant media

Roxworthy, B. J., Johnston, M. T., Lee-Montiel, F. T., Ewoldt, R. H., Imoukhuede, P. I. & Toussaint, K. C., Apr 7 2014, In : PloS one. 9, 4, e93929.

Research output: Contribution to journalArticle

Optical Tweezers
Buffers
Stiffness
buffers
Cell growth

The general low-frequency prediction for asymptotically nonlinear material functions in oscillatory shear

Bharadwaj, N. A. & Ewoldt, R. H., Jan 1 2014, In : Journal of Rheology. 58, 4, p. 891-910 20 p.

Research output: Contribution to journalArticle

shear
low frequencies
scaling
shear stress
predictions
2013

Defining nonlinear rheological material functions for oscillatory shear

Ewoldt, R. H., Jan 1 2013, In : Journal of Rheology. 57, 1, p. 177-195 19 p.

Research output: Contribution to journalArticle

Strain control
shear
coefficients
Shear strain
Rheology

Describing and prescribing the constitutive response of yield stress fluids using large amplitude oscillatory shear stress (LAOStress)

Dimitriou, C. J., Ewoldt, R. H. & McKinley, G. H., Jan 1 2013, In : Journal of Rheology. 57, 1, p. 27-70 44 p.

Research output: Contribution to journalArticle

shear stress
Yield stress
Shear stress
Fluids
critical loading

Early-stage design of rheologically complex materials via material function design targets

Bharadwaj, N. A., Allison, J. & Ewoldt, R. H., Jan 1 2013, 39th Design Automation Conference. American Society of Mechanical Engineers, V03AT03A058. (Proceedings of the ASME Design Engineering Technical Conference; vol. 3 A).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Target
Modulus Function
Design
Relaxation Function
Shear Viscosity

Low-dimensional intrinsic material functions for nonlinear viscoelasticity

Ewoldt, R. H. & Bharadwaj, N. A., Mar 26 2013, In : Rheologica Acta. 52, 3, p. 201-219 19 p.

Research output: Contribution to journalArticle

viscoelasticity
Viscoelasticity
shear
polyvinyl alcohol
shear strain

Precision rheometry: Surface tension effects on low-torque measurements in rotational rheometers

Johnston, M. T. & Ewoldt, R. H., Nov 1 2013, In : Journal of Rheology. 57, 6, p. 1515-1532 18 p.

Research output: Contribution to journalArticle

Torque measurement
rheometers
Rheometers
Surface tension
torque

Reactive coupling between immiscible polymer chains: Acceleration by compressive flow

Song, J., Baker, A. M., Macosko, C. W. & Ewoldt, R. H., Sep 1 2013, In : AIChE Journal. 59, 9, p. 3391-3402 12 p.

Research output: Contribution to journalArticle

Polymers
Adhesion
Temperature
Coextrusion
Maleic Anhydrides
2012

Nanometer-scale flow of molten polyethylene from a heated atomic force microscope tip

Felts, J. R., Somnath, S., Ewoldt, R. H. & King, W. P., Jun 1 2012, In : Nanotechnology. 23, 21, 215301.

Research output: Contribution to journalArticle

Polyethylene
Polyethylenes
Molten materials
Polymers
Microscopes
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. & McKinley, G. H., Dec 1 2011, In : Progress in Polymer Science (Oxford). 36, 12, p. 1697-1753 57 p.

Research output: Contribution to journalReview article

shear
Fluids
Shear deformation
fluids
Polymer melts

Controllable adhesion using field-activated fluids

Ewoldt, R. H., Tourkine, P., McKinley, G. H. & Hosoi, A. E., Jul 27 2011, In : Physics of fluids. 23, 7, 073104.

Research output: Contribution to journalArticle

adhesives
field strength
Adhesives
adhesion
Adhesion

Flow accelerates adhesion between functional polyethylene and polyurethane

Song, J., Ewoldt, R. H., Hu, W., Craig Silvis, H. & Macosko, C. W., Dec 1 2011, In : AIChE Journal. 57, 12, p. 3496-3506 11 p.

Research output: Contribution to journalArticle

Polyurethanes
Polyethylene
Polyethylenes
Coextrusion
Adhesion

Flow accelerates the reaction kinetics of multiphase polymer systems

Song, J., Ewoldt, R. H. & Macosko, C. W., 2011, 11AIChE - 2011 AIChE Annual Meeting, Conference Proceedings.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Coextrusion
Polyethylene
Macromolecules
Reaction kinetics
Reaction rates

Flow accelerates the reaction kinetics of multiphase polymer systems

Song, J., Ewoldt, R. H. & Macosko, C. W., Jan 1 2011, Materials Engineering and Sciences Division - Core Programming Topic at the 2011 AIChE Annual Meeting. AIChE, Vol. 2. 1 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Reaction kinetics
Polymers

Flow accelerates the reaction kinetics of multiphase polymer systems

Song, J., Ewoldt, R. H. & Macosko, C. W., Jan 1 2011, Process Development Division - Core Programming Topic at the 2011 AIChE Annual Meeting. AIChE, 1 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Reaction kinetics
Polymers

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. & Ewoldt, R. H., Dec 1 2011, In : Journal of Non-Newtonian Fluid Mechanics. 166, 23-24, p. 1421-1424 4 p.

Research output: Contribution to journalArticle

Viscosity
Thinning
viscosity
shear
Fluid

Large amplitude oscillatory shear flow of gluten dough: A model power-law gel

Ng, T. S. K., McKinley, G. H. & Ewoldt, R. H., May 1 2011, In : Journal of Rheology. 55, 3, p. 627-654 28 p.

Research output: Contribution to journalArticle

Glutens
Shear flow
shear flow
Gels
gels

Non-linear viscoelasticity of hagfish slime

Ewoldt, R. H., Winegard, T. M. & Fudge, D. S., May 1 2011, In : International Journal of Non-Linear Mechanics. 46, 4, p. 627-636 10 p.

Research output: Contribution to journalArticle

Nonlinear Viscoelasticity
Viscoelasticity
Elastic moduli
Elastic Modulus
Softening
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. & Kohane, D. S., Jul 1 2010, In : Biomaterials. 31, 19, p. 5208-5217 10 p.

Research output: Contribution to journalArticle

Hydrogel
Drug delivery
Hydrogels
Microbubbles
Coloring Agents

Large amplitude oscillatory shear of pseudoplastic and elastoviscoplastic materials

Ewoldt, R. H., Winter, P., Maxey, J. & McKinley, G. H., Jan 1 2010, In : Rheologica Acta. 49, 2, p. 191-212 22 p.

Research output: Contribution to journalArticle

shear
Xanthan gum
Plastics
Fluids
Shear thinning

On secondary loops in LAOS via self-intersection of Lissajous-Bowditch curves

Ewoldt, R. H. & McKinley, G. H., Jan 1 2010, In : Rheologica Acta. 49, 2, p. 213-219 7 p.

Research output: Contribution to journalArticle

intersections
shear
curves
projection
Shear stress
2009

From ultra-soft slime to hard α-keratins: The many lives of intermediate filaments

Fudge, D. S., Winegard, T., Ewoldt, R. H., Beriault, D., Szewciw, L. & McKinley, G. H., Jul 1 2009, In : Integrative and Comparative Biology. 49, 1, p. 32-39 8 p.

Research output: Contribution to journalArticle

intermediate filaments
keratin
Myxini
nails (integument)
biocompatible materials

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. & 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.

Research output: Contribution to journalArticle

Mucins
Mucus
Helicobacter pylori
Gastric Mucins
Rheology

Nonlinear viscoelastic biomaterials: Meaningful characterization and engineering inspiration

Ewoldt, R. H., Hosoi, A. E. & McKinley, G. H., Jul 1 2009, In : Integrative and Comparative Biology. 49, 1, p. 40-50 11 p.

Research output: Contribution to journalArticle

biocompatible materials
engineering
mucus
shear stress
locomotion
2008

An implantable port for office laparoscopy: The abview access port

Shah, A. M., Ball, N., Ewoldt, R. H., Ng, S. K., Powers, B., Fuller, A., Sieden, M., Anand, A. & Slocum, A., Jun 1 2008, In : Journal of Medical Devices, Transactions of the ASME. 2, 2, p. 1 1 p.

Research output: Contribution to journalArticle

An ontology for large amplitude oscillatory shear flow

Ewoldt, R. H., Hosoi, A. E. & McKinley, G. H., Sep 11 2008, The XVth International Congress on Rheology - The Society of Rheology 80th Annual Meeting. p. 1135-1137 3 p. (AIP Conference Proceedings; vol. 1027).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

shear flow
nonlinearity
stiffening
test stands
shear

New measures for characterizing nonlinear viscoelasticity in large amplitude oscillatory shear

Ewoldt, R. H., Hosoi, A. E. & McKinley, G. H., Nov 19 2008, In : Journal of Rheology. 52, 6, p. 1427-1458 32 p.

Research output: Contribution to journalArticle

viscoelasticity
Viscoelasticity
shear strain
nonlinearity
shear

Probing shear-banding transitions of entangled liquids using Large Amplitude Oscillatory Shearing (LAOS) deformations

Zhou, L., Ewoldt, R. H., Cook, L. P. & McKinley, G. H., Sep 16 2008, The XVth International Congress on Rheology - The Society of Rheology 80th Annual Meeting. p. 189-191 3 p. (AIP Conference Proceedings; vol. 1027).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

shearing
shear
liquids
Lissajous figures
stress distribution
2007

Rheological fingerprinting of gastropod pedal mucus and synthetic complex fluids for biomimicking adhesive locomotion

Ewoldt, R. H., Clasen, C., Hosoi, A. E. & McKinley, G. H., May 14 2007, In : Soft Matter. 3, 5, p. 634-643 10 p.

Research output: Contribution to journalArticle

pedals
mucus
locomotion
adhesives
Adhesives
Gastric Mucins
Rheology
Sol-gels
Viscoelastic Substances
Gels

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., Erramilli, S. & Erramilli, S., May 1 2007, In : Biomacromolecules. 8, 5, p. 1580-1586 7 p.

Research output: Contribution to journalArticle

Gastric Mucins
Rheology
Sol-gels
Viscoelastic Substances
Gels
2005

Turbulent and transitional velocity measurements in a rectangular microchannel using microscopic particle image velocimetry

Li, H., Ewoldt, R. H. & Olsen, M. G., Apr 1 2005, In : Experimental Thermal and Fluid Science. 29, 4, p. 435-446 12 p.

Research output: Contribution to journalArticle

Microchannels
Velocity measurement
Reynolds number
Ducts
Polydimethylsiloxane