Embedding Orthogonal Memories in a Colloidal Gel through Oscillatory Shear

Abstract

It has recently been shown that in a broad class of disordered systems oscillatory shear training can embed memories of specific shear protocols in relevant physical parameters such as the yield strain. These shear protocols can be used to change the physical properties of the system and memories of the protocol can later be "read" out. Here we investigate shear training memories in colloidal gels, which include an attractive interaction and network structure, and discover that such systems can support memories both along and orthogonal to the training flow direction. We use oscillatory shear protocols to set and read out the yield strain memories and confocal microscopy to analyze the rearranging gel structure throughout the shear training. We find that the gel bonds remain largely isotropic in the shear-vorticity plane throughout the training suggesting that structures formed to support shear along the training shear plane are also able to support shear along the orthogonal plane. Orthogonal memory extends the usefulness of shear memories to more applications and should apply to many other disordered systems as well.

arXiv commentConverted to TeX, fixed typos and reference formatting, higher quality images, included SI file

References in corpus (27)

• Nonlinear Elasticity in Biological Gels
• Rheology of Soft Glassy Materials
• Memory formation in matter
• Rejuvenation and overaging in a colloidal glass under shear
• Ultraslow dynamics and stress relaxation in the aging of a soft glassy system
• Stress localization, stiffening and yielding in a model colloidal gel
• Persistent memory in athermal systems in deformable energy landscapes
• Shear banding, aging and noise dynamics in soft glassy materials
• Gelation as condensation frustrated by hydrodynamics and mechanical isostaticity
• Deformation of crystals: Connections with statistical physics
• Colloidal Gels Tuned by Oscillatory Shear
• Multiple transient memories in experiments on sheared non-Brownian suspensions
• Generic transient memory formation in disordered systems with noise
• Directed aging, memory and Nature's greed
• Microstructural rearrangements and their rheological implications in a model Thixotropic Elasto-Visco-Plastic (TEVP) fluid
• Strength of Mechanical Memories is Maximal at the Yield Point of a Soft Glass
• A multi-axis confocal rheoscope for studying shear flow of structured fluids
• Multiple transient memories in sheared suspensions: robustness, structure, and routes to plasticity
• Strand plasticity governs fatigue in colloidal gels
• Classification of the reversible-irreversible transitions in particle trajectories across the jamming transition point
• Linking particle dynamics to local connectivity in colloidal gels
• Thermodynamic Interpretation of Soft Glassy Rheology Models
• The structure of state transition graphs in hysteresis models with return point memory: I. General Theory
• Linking microscopic and macroscopic response in disordered solids
• Minimal descriptions of cyclic memories
• Shear-Induced Reversibility of quasi-2D Colloids in Presence of Thermal Noise
• Noise spectra in the reversible-irreversible transition in amorphous solids under oscillatory driving

Cited by in corpus (10)

• Real Space Analysis of Colloidal Gels: Triumphs, Challenges and Future Directions
• Ductile-to-brittle transition and yielding in soft amorphous materials: perspectives and open questions
• Topology of the energy landscape of sheared amorphous solids and the irreversibility transition
• Mechanical memories in solids, from disorder to design
• Shear induced tuning and memory effects in colloidal gels of rods and spheres
• Shear-induced memory effects in boehmite gels
• Dissipation indicates memory formation in driven disordered systems
• Tuning local microstructure of colloidal gels by ultrasound-activated deformable inclusions
• Inter-particle adhesion induced strong mechanical memory in a dense granular suspension
• Microstructural and rheological training and memory of nanocolloidal soft glasses under cyclic shear