Pushmepullyou: An efficient micro-swimmer

Abstract

The swimming of a pair of spherical bladders that change their volumes and mutual distance is efficient at low Reynolds numbers and is superior to other models of artificial swimmers. The change of shape resembles the wriggling motion known as {\it metaboly} of certain protozoa.

Minor rephrasing and changes in style; short explanations added

References in corpus (2)

• A Simplest Swimmer at Low Reynolds Number: Three Linked Spheres
• Optimal Swimming at low Reynolds numbers

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