Reversible Trapping of Colloids in Micro-grooved Channels by Diffusiophoresis
Channel: Particle Microfluidics Group
Date: 2020-11-22

The controlled transport of colloids in dead-end structures is a key capability that can enable a wide range of applications, such as bio-chemical analysis, drug delivery and underground oil recovery. In this talk, Naval Singh, PhD student of the Particle Microfluidics Group at Loughborough University,
presents a new trapping mechanism that allows the fast (ie, within a few minutes) and reversible accumulation of sub-micron particles within dead-end micro-grooves by means of parallel streams with different salinity level. It is  envisaged  that  the  proposed mechanism can unlock new opportunities for the exploitation of solute-driven transport in soft matter and living systems for drug delivery, synthetic biology and on-chip diagnostics applications. 

More details available on the pre-print at https://arxiv.org/abs/2007.11114

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