Soft Matter Physics at the University of Oregon


In the CorwinLab our research is driven by an attempt to understand how complex collective behavior arises in the field of soft-matter physics from the simple interactions of simple components. To this end, our research efforts focus extensively on experimental, numerical, and theoretical studies of the jamming and glass transition(s), the collective behavior of granular materials, complex macroscopic systems subject to chaotic forcing, and the extremes of statistical mechanics.

Cracking the Glass Transition

Small Description

The Breakdown of Diffusion

Small Description

Network Growth and Percolation

Small Description

Granular Flow

Small Description

The Geometry of Jamming

Small Description

Macroscopic Analogs to Thermal Systems

Small Description

Current Group Members

Eric Isaac Corwin

Associate Professor

Varda Faghir Hagh

Postdoctoral Researcher

Francesco Arceri

Graduate Student

Cameron Dennis

Graduate Student

Andrew Hammond

Graduate Student

James Sartor

Graduate Student

Jack Dale


Thea Faridani



Simons Collaboration on Cracking the Glass Problem

Matthias Möbius

Mike Thorpe


Alexander Trevelyan

PhD 2018

Yasin Karim

PhD 2017

Sensor Engineer, Seahorse Geomatics, Portland, Oregon

Seahorse Geomatics

Kyle Welch

PhD 2016

Postdoctoral Researcher, Cheng Research Group, U Minn

Cheng Research Group

Peter Morse

PhD 2016

Postdoctoral Research, ManningGroup, Syracuse University


Mike van der Naald

Bachelors 2016

Post-bac Researcher 2017

Graduate Student, University of Chicago

Alexis Poncet

Masters in Physics, 2016, ENS

Doctoral Student at Université Pierre et Marie Curie – Sorbonne Universités


Clayton Kilmer

Bachelors 2016

Samantha Mellin

Bachelors 2016

Research Physicist, FEI Company, Hillsboro, Oregon

FEI Company

Isaac Hastings-Hauss

Bachelors 2013


Gabriel Trippel

Bachelors 2013

Project Engineer, Orb Optronix/CSA Seattle, Washington

Orb Optronix/CSA Seattle

Georgios Tsekenis

Postdoc 2018

Visiting Artist Program

The Corwin lab runs a visiting artist program which aims to tell the story of science and scientists from the inside out. Artists are embedded into the Corwin Physics Lab for a period of time where s/he functions side-by-side with research scientists, participating in every aspect of life in the lab. Working alongside researchers in the same space, the artist creates work that responds to the world of science as it is, in all of its complexity and humanity.

Mandy Keathley, 2017

Mandy Keathley Artist Page

Marisa Olson, 2016

Marisa Olson Artist Page

Audra Woloweic, 2014

Audra Woloweic Artist Page



Direct Measurement of Force Configurational Entropy in Jamming”, JD Sartor, EI Corwin, PRE, 101, 050902(R) (2020).
Vibrational properties of hard and soft spheres are unified at jamming”, F Arceri, EI Corwin, PRL, 124, 238002 (2020). Supplementary Material. Physics Viewpoint article: C. Patrick Royall, Bridging Jammed Grains and Glassy Atoms.
Experimental observation of the marginal glass phase”, AP Hammond, EI Corwin, PNAS, 117 (11) 5714-5718 (2020). Supplementary Material.
The Jamming Energy Landscape is Hierarchical and Ultrametric”, RC Dennis, EI Corwin, PRL, 124, 078002 (2020). Supplementary Material.


Perspective: Gardner Physics in Amorphous Solids and Beyond”, L Berthier, G Biroli, P Charbonneau, EI Corwin, S Franz, F Zamponi, J Chem Phys, 151, 010901 (2019).
Glassy, Gardner-like phenomenology in minimally polydisperse crystalline systems”, P Charbonneau, EI Corwin, L Fu, G Tsekenis, M van der Naald, PRE, 99, 020901(R) (2019).  Supplementary Material
A Broader View on Jamming: From Spring Networks to Circle Packings”, VF Hagh, EI Corwin, K Stephenson, MF Thorpe, Soft Matter, 15, 3076, (2019).


Degree produce rule tempers explosive percolation in the absence of global information”, AJ Trevelyan, G Tsekenis, EI Corwin, PRE, 97, 020301(R) (2018).


Echoes of the glass transition in athermal soft spheres“, PK Morse, EI Corwin, PRL, 119, 118003 (2017). Supplementary Material
Universality in quasi-two-dimensional granular shock fronts above an intruder“, MY Karim, EI Corwin, PRE95, 060901(R), (2017).


Hidden symmetries in jammed systems“, PK Morse, EI Corwin, JStat, Special Issue on Structure in Glassy and Jammed Systems, 074009 (2016).
Universal Non-Debye Scaling in the Density of States of Amorphous Solids“, P Charbonneau, EI Corwin, G Parisi, A Poncet, F Zamponi, PRL, 117, 045503 (2016).


Jamming Criticality Revealed by Removing Localized Buckling Excitations“, P Charbonneau, EI Corwin, G Parisi, F Zamponi, Phys Rev Lett114, 125504 (2015). Supplementary Material
Atomistic study of macroscopic analogs to short chain molecules“, KJ Welch, CSG Kilmer, EI Corwin, Phys Rev E, 91, 022603 (2015). Supplementary Material
Structure of marginally jammed polydisperse packings of frictionless spheres“, C Zhang, CB O’Donovan, EI Corwin, F Cardinaux, TG Mason, ME Möbius, F Scheffold, Phys Rev E91, 032302 (2015).


Elliminating Friction with Friction: 2D Janssen Effect in a Friction-Driven System“, MY Karim, EI Corwin, Phys Rev Lett112, 188001 (2014).
Ballistic and diffusive dynamics in a two-dimensional ideal gas of macroscopic chaotic Faraday waves“, KJ Welch, I Hastings-Hauss, R Parthasarathy, EI Corwin, Phys Rev E89, 042143 (2014).
Geometric Signatures of Jamming in the Mechanical Vacuum“, PK Morse, EI Corwin, Phys Rev Lett112, 115701 (2014). Supplementary Material


Mean-field granocentric approach in 2D & 3D polydisperse, frictionless packings“, CB O’Donovan, EI Corwin, ME Möbius, Philos. Mag., 93:31-33, 4030-4056 (2013).
Bond percolation in higher dimensions” EI Corwin, R Stinchcombe, MF Thorpe, Phys Rev E88, 014102 (2013).


Universal Microstructure and Mechanical Stability of Jammed Packings“, P Charbonneau, EI Corwin, G Parisi, F Zamponi, Phys Rev Lett, 109, 205501 (2012). Supplemental Material
Getting into a Proper Jam” EI Corwin, Physics, 5, 97 (2012).


The role of interstitial gas in determining the impact response of granular beds” JR Royer, B Conyers, EI Corwin, PJ Eng, HM Jaeger, Euro Phys Lett, 93, 28008 (2011).


Model for random packing of polydisperse frictionless spheres” EI Corwin, M Clusel, AON Siemens, and J Brujic, Soft Matter, 6, 2949-2959 (2010).


A ‘granocentric’ model for random packing of jammed emulsions” M Clusel, EI Corwin, AON Siemens, and J Brujic, Nature, 460, 611-615 (2009).


Birth and growth of a granular jet” JR Royer, EI Corwin, B Conyers, A Flior, ML Rivers, PJ Eng, and HM Jaeger, Phys Rev E78, 011305, (2008).
Granular flow in a rapidly rotated system with fixed walls” EI Corwin, Phys Rev E, 77, 031308 (2008).
Temporal force fluctuations measured by tracking individual particles in granular materials under shear” EI Corwin, ET Hoke, Jaeger HM, and Nagel SR, Phys Rev E, 77, (2008).


Gas-mediated impact dynamics in fine-grained granular materials” JR Royer, EI Corwin, PJ Eng, and HM Jaeger, Phys Rev Lett, 99, 038003, (2007).


Kinetically driven self assembly of highly ordered nanoparticle monolayers” TP Bigioni, XM Lin, TT Nguyen, EI Corwin, TA Witten, and HM Jaeger, Nature Materials, 5, 265-270, (2006).


Formation of granular jets observed by high-speed X-ray radiography” JR Royer, EI Corwin, A Flior, ML Cordero, ML Rivers, PJ Eng, and HM Jaeger, Nature Physics,1, 164-167, (2005).
Structural signature of jamming in granular media” EI Corwin, HM Jaeger, and SR Nagel, Nature, 435, 1075-1078, (2005).


Flow and fracture in drying nanoparticle suspensions” ER Dufresne, EI Corwin, NA Greenblatt, J Ashmore, DY Wang, AD Dinsmore, JC Cheng, XS Xie, JW Hutchinson, and DA Weitz, Phys Rev Lett, 91, (2003).