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Experimental Observation of Negative Effective Gravity in Water Waves

TitleExperimental Observation of Negative Effective Gravity in Water Waves
Publication TypeJournal Article
Year of Publication2013
AuthorsHu, XH, Yang, J, Zi, J, Chan, CT, Ho, KM
JournalScientific Reports
Volume3
Pagination1916
Date Published05
Type of ArticleArticle
ISBN Number2045-2322
Accession NumberWOS:000319553800003
Keywordsarray, metamaterials, power, propagation, refractive-index
Abstract

ur for water waves passing through an array of resonators composing of bottom-mounted split tubes, resulting in the prohibition of water wave propagation. It is found that when negative gravity occurs, the averaged displacement of water surface in a unit cell of the array has a phase difference of pi to that along the boundary of the unit cell, consistent with theoretical predictions. Our results provide a mechanism to block water waves and may find applications in wave energy conversion and coastal protection.

DOI10.1038/srep01916
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Exploratory Theory