Abstract
We demonstrate that catalytic micromotors can be trapped in microfluidic chips containing chevron and heart-shaped structures. Despite the challenge presented by the reduced size of the traps, microfluidic chips with different trapping geometries can be fabricated via replica moulding. We prove that these microfluidic chips can capture micromotors without the need for any external mechanism to control their motion.
Highlights
We demonstrate that catalytic micromotors can be trapped in microfluidic chips containing chevron and heart-shaped structures
Ratchets of different geometries have been previously proposed to redirect the motion of motile entities such as bacteria and molecular motors.[32,33]
We developed a series of microfluidic chips containing patterns of different geometries and allowed micromotors to swim freely in these chambers without the influence of any external mechanism
Summary
We demonstrate that catalytic micromotors can be trapped in microfluidic chips containing chevron and heart-shaped structures. Löwen's group reported a theoretical model in which static chevronshaped structures can be used to trap self-propelled rod-like particles.[31] ratchets of different geometries have been previously proposed to redirect the motion of motile entities such as bacteria and molecular motors.[32,33] We developed a series of microfluidic chips containing patterns of different geometries and allowed micromotors to swim freely in these chambers without the influence of any external mechanism.
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