‘Micro-scallop’ takes a stroke toward swimming in blood | Science News

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‘Micro-scallop’ takes a stroke toward swimming in blood

micro-scallop

Designed like a scallop, this tiny device can flap its way through fluids that have inconsistent viscosity, something that has been a challenge in the past. 

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Making tiny machines that can move through blood and other fluids that have inconsistent consistencies, or viscosities, is tough. Now scientists say that their “micro-scallop” is up to the task. The device has two shells attached at a single hinge. Magnets control how quickly the shells flap open and shut. Depending on those speeds, the viscocity of the fluid between the shells can change, propelling the 300-micrometer-wide scallop forward. The design could pave the way for similar swimmers to travel through blood and tissue and deliver therapeutic drugs to targeted areas, researchers report November 4 in Nature Communications

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