Behrend

Benedikt Sabass

Deshpande

Eujin Um

Howard A. Stone

Howse

Jesse T. Ault

Ladd

Latini

Mohammad Rahimi

Patrick B. Warren

Sabass

Sangwoo Shin

Verma

Significance
          Dead-end geometries are commonly found in many porous systems. Particle transport into such dead-end pores is often important, but is difficult to achieve owing to the confinement. It is natural to expect that Brownian motion is the sole mechanism to deliver the particles into the pores, but that mechanism is, unfortunately, slow and inefficient. Here, we introduce solute gradient to control the transport of particles in dead-end channels. We demonstrate a size effect such that larger particles tend to focus more and reside deeper in the channels. Our findings suggest a potential pathway to many useful applications that are difficult to achieve in dead-end geometries such as particle sorting and sample preconcentration, which are important in pharmaceuticals and healthcare industries.</jats:p

Crossref

Proceedings of the National Academy of Sciences

Size-dependent control of colloid transport via solute gradients in dead-end channels

Size-dependent control of colloid transport via solute gradients in dead-end channels

Abstract

Similar works

Full text

Available Versions

Crossref