Microtransformers: controlled microscale navigation with flexible robots

Abstract

Artificial microswimmers are a new technology with promising microfluidics and biomedical applications, such as directed cargo transport, microscale assembly, and targeted drug delivery. A fundamental barrier to realising this potential is the ability to control the trajectories of multiple individuals within a large group. A promising navigation mechanism for "fuel-based" microswimmers, for example autophoretic Janus particles, entails modulating the local environment to guide the swimmer, for instance by etching grooves in microchannels. However, such techniques are currently limited to bulk guidance. This paper will argue that by manufacturing microswimmers from phoretic filaments of flexible shape-memory polymer, elastic transformations can modulate swimming behaviour, allowing precision navigation of selected individuals within a group through complex environments.

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Cited by in corpus (5)

• Efficient Implementation of Elastohydrodynamics via Integral Operators
• The swelling and shrinking of spherical thermo-responsive hydrogels
• Doing more with less: the flagellar end piece enhances the propulsive effectiveness of human spermatozoa
• Slender Phoretic Theory of chemically active filaments
• Instability and self-propulsion of flexible autophoretic filaments