Constructions of knotted divergence-free vector fields with tunable helicity. From top left to bottom right: figure-8 knot, linked rings, trefoil knot, symmetric figure-8 knot, linked trefoil knot, and cable knot. Selected for an Editors’ Suggestion.
From the article:
Weaving Knotted Vector Fields with Tunable HelicityHridesh Kedia, David Foster, Mark R. Dennis, and William T. M. Irvine
Phys. Rev. Lett. 117, 274501 (2016)
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