Transport in Charged Colloids Driven by Thermoelectricity
arXiv:1401.7447 · doi:10.1103/PhysRevLett.101.108302
Abstract
We study the thermal diffusion coefficient DT of a charged colloid in a temperature gradient, and find that it is to a large extent determined by the thermoelectric response of the electrolyte solution. The thermally induced salinity gradient leads in general to a strong increase with temperature. The difference of the heat of transport of coions and counterions gives rise to a thermoelectric field that drives the colloid to the cold or to the warm, depending on the sign of its charge. Our results provide an explanation for recent experimental findings on thermophoresis in colloidal suspensions.
4 pages, 2 figures
Cited by in corpus (28)
- Ionic thermoelectric materials and devices
- Flow pattern in the vicinity of self-propelling hot Janus particles
- Specific Salt Effects on Thermophoresis of Charged Colloids
- Collective thermoelectrophoresis of charged colloids
- Is Soret equilibrium a non-equilibrium effect?
- Charging of Heated Colloidal Particles Using the Electrolyte Seebeck Effect
- Hydrodynamic boundary effects on thermophoresis of confined colloids
- On the thermopower of ionic conductor and ionic capacitors
- Thermocharge of a hot spot in an electrolyte solution
- Fast and Versatile Thermo-osmotic Flows with a Pinch of Salt
- Nanoscale Seebeck effect at hot metal nanostructures
- Thermo-osmotic slip flows around a thermophoretic microparticle characterized by optical trapping of tracers
- Impedance resonance in narrow confinement
- Temperature-gradient induced massive augmentation of solute dispersion in viscoelastic micro-flows
- On the microscopic origin of Soret coefficient minima in liquid mixtures
- Confinement Effect on Thermopower of Electrolytes
- Two-stage Seebeck effect in charged colloidal suspensions
- Theoretical prediction of thermal polarisation
- Hydrodynamic interactions in DNA thermophoresis
- Diffusion and conduction in a salt-free colloidal suspension via molecular dynamics simulations
- Particle motion driven by non-uniform thermodynamic forces
- Thermophoretic motion of a charged single colloidal particle
- Quantum thermophoresis
- Experimental Study of Thermodiffusion and Thermoelectricity in Charged Colloids
- Temperature-gradient-induced electrokinetic flow and thermoelectricity of electrolyte solutions in a capillaries
- Temperature-Gradient Effects on Electric Double Layer Screening in Electrolytes
- Optothermal rotation of micro-/nano-objects in liquids
- A computational approach to calculate the heat of transport of aqueous solutions