Rheology
Thanks to an NSF-MRI grant we have a DHR-3 rheometer which we use to study the rheology (ie, how materials flow or deform when a force is applied) of colloidal fluids, suspensions of DNA, and other materials.
Team members:
Karthik Reddy Peddireddy
Juexin Marfai
Laura Morocho
Jack Brady
Alumni
Dennis Terwilliger
Alumni
Ryle Rel
Alumni
Demili Pichay
Alumni
Jack Schwarz
Alumni
Philip Neill
Alumni
Nikhil Sonthalia
Alumni
Anna Krolik
Alumni
Max Liu
Alumni
Publications on topic:
 | Cooperative Rheological State-Switching of Enzymatically-Driven Composites of Circular Dna And Dextran *Juexin Marfai*, *Ryan McGorty*, Rae M. Robertson-Anderson Published in Advanced Materials, July 2023 (see publication) Research themes: Rheology |
 | Shear-induced vorticity aligned flocs in a temperature responsive colloid-polymer mixture *Ryle Rel*, *Dennis Terwilliger*, *Ryan McGorty* Published in Frontiers in Physics, August 2022 (see publication) Research themes: Colloidal Fluids, Rheology |
 | DNA topology dictates emergent bulk elasticity and hindered macromolecular diffusion in DNA-dextran composites Pawan Khanal, *Karthik R. Peddireddy*, *Juexin Marfai*, *Ryan McGorty*, Rae M. Robertson-Anderson Published in Journal of Rheology, June 2022 (see publication) Research themes: Rheology |
Presentations:
 | The rheology of colloidal suspensions measured as rod-shaped particles emerge and grow *Ryle Rel*, *Ryan McGorty* Presented at APS March Meeting, March 2023 (see published abstract) Research themes: Colloidal Fluids, Rheology |
| | Non-equilibrium viscoelasticity driven by dynamic concatenation of ring DNA *Philip Neill*, *Juexin Marfai*, Cindy Sumair, *Ryan McGorty*, Rae Robertson-Anderson Presented at APS March Meeting, March 2023 (see published abstract) Research themes: Rheology |
| | Dynamic concatenation leads to anomalous transport of ring DNA in concentrated solutions *Juexin Marfai*, *Philip Neill*, *Ryan McGorty*, Rae M. Robertson-Anderson Presented at APS March Meeting, March 2023 (see published abstract) Research themes: Rheology |
 | Time-dependent rheology of enzymatically-active composites of DNA and dextran *Juexin Marfai*, Pawan Khanal, *Philip Neill*, Davide Michieletto, *Ryan McGorty*, Rae M. Robertson-Anderson Presented at ACS Spring Meeting, March 2022 (see published abstract) Research themes: Rheology |
| | Shear-induced anisotropy at the meso- and macro-scales in colloidal gels *Ryan McGorty*, *Ryle R. Rel*, *Dennis Terwilliger* Presented at ACS Spring Meeting, March 2022 (see published abstract) Research themes: Colloidal Fluids, Rheology |
 | Time-dependent rheology of enzymatically-active composites of DNA and dextran *Juexin Marfai*, Pawan Khanal, *Philip Neill*, Davide Michieletto, *Ryan McGorty*, Rae M. Robertson-Anderson Presented at APS March Meeting, March 2022 (see published abstract) Research themes: Rheology |
| | Sheared gels form vorticity-aligned flocs depending on the shape of connected colloidal clusters *Ryle R. Rel*, *Dennis Terwilliger*, *Ryan McGorty* Presented at APS March Meeting, March 2022 (see published abstract) Research themes: Colloidal Fluids, Rheology |
 | Colloidal gels displaying both flow-aligned and vorticity-aligned flocs under shear *Dennis Terwilliger*, *John C. Brady*, *Ryan McGorty* Presented at APS March Meeting, March 2021 (see published abstract) Research themes: Colloidal Fluids, Rheology |
 | Cycling between flow-aligned and vorticity-aligned flocs using temperature-sensitive colloid-polymer mixtures *Dennis Terwilliger*, *Ryan McGorty* Presented at International Congress on Rheology, December 2020 Research themes: Colloidal Fluids, Rheology |
 | Observing phase separation of temperature-responsive colloids under shear *John Brady*, *Ryan McGorty* Presented at APS March Meeting, March 2020 (see published abstract) Research themes: Colloidal Fluids, Rheology |