Regularised stokeslet flows reduce to a stokeslet plus a source dipole plus an isotropic core; blobs with negative force regions can eliminate the dipole and converge exponentially to the true stokeslet flow.
Microtransformers: controlled microscale navigation with flexible robots
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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.
fields
physics.flu-dyn 1years
2019 1verdicts
ACCEPT 1representative citing papers
citing papers explorer
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Method of regularised stokeslets: Flow analysis and improvement of convergence
Regularised stokeslet flows reduce to a stokeslet plus a source dipole plus an isotropic core; blobs with negative force regions can eliminate the dipole and converge exponentially to the true stokeslet flow.