Diffusiophoresis driven colloidal manipulation and shortcuts to adiabaticity

Abstract

While compressing a colloidal state by optical means alone has been previously achieved through a specific time-dependence of the trap stiffness, realizing quickly the reverse transformation stumbles upon the necessity of a transiently expulsive trap. To circumvent this difficulty, we propose to drive the colloids by a combination of optical trapping and diffusiophoretic forces, both time-dependent. Forcing via diffusiophoresis is enforced by controlling the salt concentration at the boundary of the domain where the colloids are confined. The method takes advantage of the separation of time scales between salt and colloidal dynamics, and realizes a fast decompression in an optical trap that remains confining at all times. We thereby obtain a so-called shortcut to adiabaticity protocol where colloidal dynamics, enslaved to salt dynamics, can nevertheless be controlled as desired.

18 pages, 18 figures

References in corpus (9)

• Optimal finite-time processes in stochastic thermodynamics
• Colloidal motility and pattern formation under rectified diffusiophoresis
• Fast and noise-resistant implementation of quantum phase gates and creation of quantum entangled states
• Efficiency of molecular motors at maximum power
• Shortcuts to adiabaticity using flow fields
• Exact non-equilibrium solutions of the Boltzmann equation under a time-dependent external force
• Optimal work in a harmonic trap with bounded stiffness
• Engineered Swift Equilibration of a Brownian Gyrator
• Shortcut to adiabaticity in a Stern-Gerlach apparatus

Cited by in corpus (2)

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