248 citations · 822 across the 20 of their papers we have counts for
16 papers · 1 filter
Spatially heterogeneous relaxational dynamics and the evolution of recoverable strain following flow cessation of a ductile nanocolloidal glass
Chloe W. Lindeman, James J. Griebler, Penelope Grace Kovakas +6
We report a combined rheology and x-ray photon correlation spectroscopy (XPCS) study of the structural and mechanical relaxation of a ductile, nanocolloidal glass following the ces…
Ductile-to-brittle transition and yielding in soft amorphous materials: perspectives and open questions
Thibaut Divoux, Elisabeth Agoritsas, Stefano Aime +37
Soft amorphous materials are viscoelastic solids ubiquitously found around us, from clays and cementitious pastes to emulsions and physical gels encountered in food or biomedical e…
Microstructural and rheological training and memory of nanocolloidal soft glasses under cyclic shear
Yihao Chen, Simon A. Rogers, Suresh Narayanan +2
An intrinsic feature of disordered and out-of-equilibrium materials, such as glasses, is the dependence of their properties on their history. An important example is rheological me…
Tunable Three-Dimensional Architecture of Nematic Disclination Lines
Alvin Modin, Biswarup Ash, Kelsey Ishimoto +3
Disclinations lines play a key role in many physical processes, from the fracture of materials to the formation of the early universe. Achieving versatile control over disclination…
Driven Topological Transitions in Active Nematic Films
David P. Rivas, Tyler N. Shendruk, Robert R. Henry +2
The topological properties of many materials are central to their behavior, with the dynamics of topological defects being particularly important to intrinsically out-of-equilibriu…
Films of Bacteria at Interfaces (FBI): Remodeling of Fluid Interfaces by Pseudomonas aeruginosa
Tagbo H. R. Niepa, Liana Vaccari, Robert L. Leheny +3
Bacteria at fluid interfaces endure physical and chemical stresses unique to these highly asymmetric environments. The responses of Pseudomonas aeruginosa PAO1 and PA14 to a hexade…
Films of bacteria at interfaces: three stages of behaviour
Liana Vaccari, Daniel Allan, Nima Sharifi-Mood +3
Bacterial attachment to a fluid interface can lead to the formation of a film with physicochemical properties that evolve with time. We study the time evolution of interface (micro…
Slow, non-diffusive dynamics in concentrated nanoemulsions
H. Guo, J. N. Wilking, D. Liang +3
Using multispeckle x-ray photon correlation spectroscopy, we have measured the slow, wave-vector dependent dynamics of concentrated, disordered nanoemulsions composed of silicone o…
Wrinkling of a bilayer membrane
A. Concha, J. W. McIver, P. Mellado +3
The buckling of elastic bodies is a common phenomenon in the mechanics of solids. Wrinkling of membranes can often be interpreted as buckling under constraints that prohibit large…
Slow dynamics, aging, and glassy rheology in soft and living matter
Ranjini Bandyopadhyay, Dennis Liang, James L. Harden +1
We explore the origins of slow dynamics, aging and glassy rheology in soft and living matter. Non-diffusive slow dynamics and aging in materials characterised by crowding of the co…
Enhanced Elasticity and Soft Glassy Rheology of a Smectic in a Random Porous Environment
Ranjini Bandyopadhyay, Dennis Liang, Ralph H. Colby +2
We report studies of the frequency dependent shear modulus, , of the liquid crystal octylcyanobiphenyl (8CB) confined in a colloidal aerosil gel. With the ons…
Evolution of particle-scale dynamics in an aging clay suspension
R. Bandyopadhyay, D. Liang, H. Yardimci +5
Multispeckle x-ray photon correlation spectroscopy was employed to characterize the slow dynamics of a colloidal suspension formed by highly-charged, nanometer-sized disks. At scat…
Memory in an aging molecular glass
H. Yardimci, R. L. Leheny
The dielectric susceptibility of the molecular liquid sorbitol below its calorimetric glass transition displays memory strikingly similar to that of a variety of glassy materials.…
Smectic ordering in liquid crystal - aerosil dispersions II. Scaling analysis
Germano S. Iannacchione, Sungil Park, Carl W. Garland +2
Liquid crystals offer many unique opportunities to study various phase transitions with continuous symmetry in the presence of quenched random disorder (QRD). The QRD arises from t…
Smectic ordering in liquid crystal - aerosil dispersions I. X-ray scattering
R. L. Leheny, S. Park, R. J. Birgeneau +3
Comprehensive x-ray scattering studies have characterized the smectic ordering of octylcyanobiphenyl (8CB) confined in the hydrogen-bonded silica gels formed by aerosil dispersions…
Hydrogen-bonded Silica Gels Dispersed in a Smectic Liquid Crystal: A Random Field XY System
S. Park, R. L. Leheny, R. J. Birgeneau +3
The effect on the nematic to smectic-A transition in octylcyanobiphenyl (8CB) due to dispersions of hydrogen-bonded silica (aerosil) particles is characterized with high-resolution…