Two-dimensional diffusiophoretic colloidal banding: optimizing the spatial and temporal design of solute sinks and sources
Ritu R. Raj, C. Wyatt Shields, Ankur Gupta
Abstract
, four sinks and four sources, arranged in a circle, and demonstrate that the geometric arrangement that maximizes enrichment depends on the radius of the circle. If the radius of the circle is small, it is preferred to have sources and sinks arranged in an alternating fashion. However, if the radius of the circle is large, a consecutive arrangement of sources and sinks is optimal. Our numerical framework introduces a novel method for spatially and temporally designing the banded structure of colloidal particles in two dimensions using diffusiophoresis and opens up new avenues in a field that has primarily focused on one-dimensional solute gradients.
Topics & Concepts
ColloidDiffusionBalance (ability)Set (abstract data type)Statistical physicsColloidal particleBiological systemEnvironmental scienceMaterials scienceChemical physicsPhysicsComputer scienceChemical engineeringThermodynamicsEngineeringBiologyProgramming languageNeuroscienceMicrofluidic and Bio-sensing TechnologiesElectrostatics and Colloid InteractionsNanopore and Nanochannel Transport Studies