Sound Isolation and Giant Linear Nonreciprocity in a Compact Acoustic Circulator
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- Romain Fleury
- Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, TX 78712, USA.
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- Dimitrios L. Sounas
- Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, TX 78712, USA.
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- Caleb F. Sieck
- Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, TX 78712, USA.
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- Michael R. Haberman
- Applied Research Laboratories, The University of Texas at Austin, Austin, TX 78758, USA.
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- Andrea Alù
- Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, TX 78712, USA.
説明
<jats:title>Acoustically Isolated</jats:title> <jats:p> The control of sound transmission is desirable in a number of circumstances from noise suppression to imaging technologies. <jats:bold> Fleury <jats:italic>et al.</jats:italic> </jats:bold> (p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6170" page="516" related-article-type="in-this-issue" vol="343" xlink:href="10.1126/science.1246957">516</jats:related-article> ; see the cover; see the Perspective by <jats:bold> <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6170" page="495" related-article-type="in-this-issue" vol="343" xlink:href="10.1126/science.1249616">Cummer</jats:related-article> </jats:bold> ) studied a subwavelength acoustic meta-atom consisting of a resonant ring cavity biased by an internally circulating fluid. The direction of rotational flow of the fluid (air) changed the resonant properties of the ring cavity, allowing the propagation of sound waves within the cavity to be controlled. With several ports connected to the cavity, sound could be directed to a certain port while isolating transmission in another. </jats:p>
収録刊行物
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- Science
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Science 343 (6170), 516-519, 2014-01-31
American Association for the Advancement of Science (AAAS)
