Colloidal motility and pattern formation under rectified diffusiophoresis
arXiv:1004.1256 · doi:10.1103/PhysRevLett.104.138302
Abstract
In this letter, we characterize experimentally the diffusiophoretic motion of colloids and lambda- DNA toward higher concentration of solutes, using microfluidic technology to build spatially- and temporally-controlled concentration gradients. We then demonstrate that segregation and spatial patterning of the particles can be achieved from temporal variations of the solute concentration profile. This segregation takes the form of a strong trapping potential, stemming from an osmotically induced rectification mechanism of the solute time-dependent variations. Depending on the spatial and temporal symmetry of the solute signal, localization patterns with various shapes can be achieved. These results highlight the role of solute contrasts in out-of-equilibrium processes occuring in soft matter.
References in corpus (5)
- Self-motile colloidal particles: from directed propulsion to random walk
- Manipulation of Colloids by Nonequilibrium Depletion Force in Temperature Gradient
- Giant amplification of interfacially driven transport by hydrodynamic slip: diffusio-osmosis and beyond
- Colloidal motility and pattern formation under rectified diffusiophoresis
- Generic theory of colloidal transport
Cited by in corpus (37)
- Sedimentation of active colloidal suspensions
- Osmosis, from molecular insights to large-scale applications
- Phototaxis of synthetic microswimmers in optical landscapes
- Self-assembly of catalytically active colloidal molecules: Tailoring activity through surface chemistry
- Freezing and phase separation of self-propelled disks
- Colloidal motility and pattern formation under rectified diffusiophoresis
- Minimal model of active colloids highlights the role of mechanical interactions in controlling the emergent behavior of active matter
- Self-assembly of micro-machining systems powered by Janus micro-motors
- Motility-induced phase separation and coarsening in active matter
- DNA translocation through nanopores with salt gradients: The role of osmotic flow
- Efficiency of surface-driven motion: nano-swimmers beat micro-swimmers
- Reversible Trapping of Colloids in Microgrooved Channels via Diffusiophoresis under Steady-State Solute Gradients
- Brownian systems with spatially inhomogeneous activity
- Controlled assembly of single colloidal crystals using electro-osmotic micro-pumps
- Local and global force balance for diffusiophoretic transport
- Continuous manipulation and characterization of colloidal beads and liposomes via diffusiophoresis in single- and double-junction microchannels
- Two-dimensional diffusiophoretic colloidal banding: Optimizing the spatial and temporal design of solute sinks and sources
- Anomalous segregation dynamics of self-propelled particles
- Easier sieving through narrower pores: fluctuations and barrier crossing in flow-driven polymer translocation
- Microfluidic free interface diffusion: measurement of diffusion coefficients and evidence of interfacial-driven transport phenomena
- Surface Chemistry-based Continuous Separation of Colloidal Particles via Diffusiophoresis and Diffusioosmosis
- Solute-mediated colloidal vortex in a microfluidic T-junction
- Shape- and orientation-dependent diffusiophoresis of colloidal ellipsoids
- Studying polymer diffusiophoresis with Non-Equilibrium Molecular Dynamics
- Flocking from a quantum analogy: Spin-orbit coupling in an active fluid
- Thermal Molecular Focusing: Tunable Cross Effect of Phoresis and Advection
- Collective dynamics and rheology of confined phoretic suspensions
- Site-percolation transition of run-and-tumble particles
- AMEP: The Active Matter Evaluation Package for Python
- Diffusiophoresis driven colloidal manipulation and shortcuts to adiabaticity
- Convective Instability Driven by Diffusiophoresis of Colloids in Binary Liquid Mixtures
- Physicochemical Hydrodynamics of Droplets out of Equilibrium: A Perspective Review
- Diffusioosmotic corner flows
- Nonequilibrium dynamical structure of a dilute suspension of active particles in a viscoelastic fluid
- Effective flows across diffusio-phoretic membranes
- Diffusiophoretic migration of colloidal particles in sucrose gradients
- The effect of self-induced Marangoni flow on polar-nematic waves in active-matter systems