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Droplet traffic in microfluidic networks: A simple model for understanding and designing
M. Schindler, A. Ajdari
We propose a simple model to analyze the traffic of droplets in microfluidic ``dual networks''. Such functional networks which consist of two types of channels, namely those access…
Mechanical Response of a Small Swimmer Driven by Conformational Transitions
Ramin Golestanian, Armand Ajdari
A conformation space kinetic model is constructed to drive the deformation cycle of a three-sphere swimmer to achieve propulsion at low Reynolds number. We analyze the effect of an…
Analytic results for the three-sphere swimmer at low Reynolds number
Ramin Golestanian, Armand Ajdari
The simple model of a low Reynolds number swimmer made from three spheres that are connected by two arms is considered in its general form and analyzed. The swimming velocity, forc…
Nonlinear Electrokinetics at large applied voltages
Martin Z. Bazant, Mustafa Sabri Kilic, Brian D. Storey +1
The classical theory of electrokinetic phenomena assumes a dilute solution of point-like ions in chemical equilibrium with a surface whose double-layer voltage is of order the ther…
Transverse transport of solutes between co-flowing pressure-driven streams for microfluidic studies of diffusion/reaction processes
Jean-Baptiste Salmon, Armand Ajdari
We consider a situation commonly encountered in microfluidics: two streams of miscible liquids are brought at a junction to flow side by side within a microchannel, allowing solute…
Propulsion of a molecular machine by asymmetric distribution of reaction--products
Ramin Golestanian, Tanniemola B. Liverpool, Armand Ajdari
A simple model for the reaction-driven propulsion of a small device is proposed as a model for (part of) a molecular machine in aqueous media. Motion of the device is driven by an…