Minisymposium: Yielding and Flow of Soft Matter Systems

Day 1: 28th February 2023 (location: OIST Center Building Room C209)

9:10-9:25 Opening remarks by Prof. Amy Q. Shen

9:25-9:40 Overview of program and introduction of speakers by Simon Haward

Session 1 (chair: Simon Haward, OIST)

9:40-10:40 Gareth McKinley, MIT, USA

Title: Models, Protocols and Nomenclature for Distinguishing the Responses of Thixotropic Elastoviscoelastoplastic (TEVP) Fluids

10:40-11:00 Coffee break

11:00-12:00 Tsutomu Takahashi, Nagaoka University of Technology, Japan

Title: Microscopic Rheological Characterization of Concentrated Dispersion Fluids using Nano-Indentation Tests with a Spherical Indenter

12:00-14:00 Lunch (closed), group photo, and campus tour

Session 2 (chair: Amy Shen, OIST)

14:00-14:30 Simon Haward, OIST, Japan

Title: “Geometric Effects on the Dynamics of Viscoelastic Porous Media Flows

14:30-15:00 San To Chan, OIST, Japan

Title: Edge Fracture and the Tanner Number

15:00-15:20 Coffee break

15:20-16:20 Thibaut Divoux, ENS Lyon, France

Title: Continuum Modeling of Shear Startup in Soft Glassy Materials

16:20-17:20 (ZOOM, Kanpur time 12:50-13:50) Yogesh Joshi, IIT Kanpur, India

Title: “Are Thixotropic Yield Stress Fluids Necessarily Plastic?”

18:30-20:30 Dinner (closed) at Local Restaurant “Umusannoniwa” in Onna Village


Day 2: 1st March 2023 (location: Seaside House)

Session 1 (chair: John Tsamopoulos)

9:00-10:00 Emanuela del Gado, Georgetown University, USA

Title: Yielding, Flow, and Memory of Shear in Soft Jammed Materials

10:00-10:30 Stylianos Varchanis, OIST, Japan

Title: Modeling and Simulations of Thixotropic Elastoviscoplastic Fluids

10:30-10:50 Coffee break

10:50-11:20 Mohamed Abdelgawad, OIST, Japan

Title: Tuning the Extensional Behavior of Elastoviscoplastic Fluids

11:20-12:20 Yilong Han, HKUST, Hong Kong

Title: “Colloidal Polycrystalline Grain Growths and Solid-Solid Transition Under Shear”

12:20-13:30 Lunch (closed)

13:30-18:30 Free time/excursion by bus to Churaumi Aquarium ( and Ocean Expo Park (

Note: aquarium entrance fee is 2180 JPYen (approx. $16.50US)

19:00-21:00 Dinner (closed) at Chura Hall, Seaside House


Day 3: 2nd March 2023 (location: Seaside House)

Session 1 (chair: Emanuela del Gado)

9:00-10:00 (Pre-recorded + ZOOM, NY time 19:00-20:00) Sarah Hormozi, Cornell, USA

Title: “The Fluid Mechanics of Bacterial Swimming in Elastoviscoplastic Fluids”

10:00-10:20 Coffee break

10:20-11:20 Simon Rogers, UIUC, USA

Title: What We Learn About Yielding from Recovery Rheology

11:20-12:20 Yoko Yamanishi, Kyushu University, Japan

Title: “Emergent Functions of Electrically-induced Bubble”

12:20-13:40 Lunch (closed)

Session 2 (chair: Stylianos Varchanis)

13:40-14:40 John Tsamopoulos, University of Patras, Greece

Title: “Buoyancy Driven Rise of Bubbles in Elasto-Visco-Plastic Fluids”

14:40-15:00 Coffee break

15:00-16:00 Marco Rosti, OIST, Japan

Title: “Turbulence in Elastoviscoplastic Fluids”

16:00-17:00 (ZOOM, UK time 07:00-08:00) Suzanne Fielding, Durham University, UK

Title: “Shear Localisation during Yielding of Amorphous Materials”

17:00-18:30 Free time

19:00-21:00 Dinner (closed) at Local Restaurant “Chinuman” in Onna Village