Physics

Direct observation of ideal electromagnetic fluids

H. Li, Z. Zhou, et al.

This groundbreaking research, conducted by Hao Li, Ziheng Zhou, Wangyu Sun, Michaël Lobet, Nader Engheta, Iñigo Liberal, and Yue Li, showcases the fascinating behavior of near-zero-index media. The study demonstrates the inhibition of electromagnetic vorticity at the NZI frequency, verified through experimental observations within a cutoff waveguide, even in the presence of obstacles. Discover how such unique properties challenge conventional electromagnetic theory!

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Abstract

Near-zero-index (NZI) media have been theoretically identified as media where electromagnetic radiations behave like ideal electromagnetic fluids. This paper experimentally observes the electromagnetic power flow distribution within a cutoff waveguide using a semi-analytical reconstruction technique, directly proving the inhibition of electromagnetic vorticity at the NZI frequency, even with obstacles and topological changes. Measurements outside the NZI range reveal vortices, confirming the unique behavior of NZI media.

Publisher

Nature Communications

Published On

Aug 12, 2022

Authors

Hao Li, Ziheng Zhou, Wangyu Sun, Michaël Lobet, Nader Engheta, Iñigo Liberal, Yue Li

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