Microfluidic pumping using artificial magnetic cilia

TL;DR

This paper demonstrates microfluidic pumping using magnetically actuated synthetic cilia arranged in arrays, achieving significant flow rates and pressure drops, with potential applications in lab-on-chip devices.

Contribution

It introduces a novel magnetic actuation method for synthetic cilia arrays to enable controlled fluid transport in microfluidic systems.

Findings

Flow rates up to 11 μl/min achieved

Pressure drop around 1 Pa observed

Effective fluid pumping demonstrated in microchannels

Abstract

One of the vital functions of naturally occurring cilia is fluid transport. Biological cilia use spatially asymmetric strokes to generate a net fluid flow that can be utilized for feeding, swimming, and other functions. Biomimetic synthetic cilia with similar asymmetric beating can be useful for fluid manipulations in lab-on-chip devices. In this paper, we demonstrate the microfluidic pumping by magnetically actuated synthetic cilia arranged in multi-row arrays. We use a microchannel loop to visualize flow created by the ciliary array and to examine pumping for a range of cilia and microchannel parameters. We show that magnetic cilia can achieve flow rates of up to 11 {\mu}l/min with the pressure drop of~ 1 Pa. Such magnetic ciliary array can be useful in microfluidic applications requiring rapid and controlled fluid transport.