Perfect absorption of low-frequency sound waves by critically coupled subwavelength resonant system
The perfect absorption (PA) for low-frequency audible sound waves has been achieved by critically coupling the inherent loss factor to the inherent leakage factor of a system, which is constructed by attaching a deep-subwavelength lossy resonant plate (LRP) to a backed rigid wall closely. We have ce...
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| Veröffentlicht in: | Applied physics letters 2017-01, Vol.110 (2) |
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| container_title | Applied physics letters |
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| creator | Long, Houyou Cheng, Ying Tao, Jiancheng Liu, Xiaojun |
| description | The perfect absorption (PA) for low-frequency audible sound waves has been achieved by critically coupling the inherent loss factor to the inherent leakage factor of a system, which is constructed by attaching a deep-subwavelength lossy resonant plate (LRP) to a backed rigid wall closely. We have certified it by using the graphical method in the complex frequency plane. By coupling the LRP to an air cavity in front of the rigid wall, the high efficient (>80%) low-frequency broadband absorption is obtained from 99.1 Hz to 294.8 Hz. Here, the thickness of LRP is only 1/13.5 of the relevant wavelength at 294.8 Hz. The impedance analyses further demonstrate that the impedances are perfectly matched between the system and the surrounding background medium at PA. |
| doi_str_mv | 10.1063/1.4973925 |
| format | Article |
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We have certified it by using the graphical method in the complex frequency plane. By coupling the LRP to an air cavity in front of the rigid wall, the high efficient (>80%) low-frequency broadband absorption is obtained from 99.1 Hz to 294.8 Hz. Here, the thickness of LRP is only 1/13.5 of the relevant wavelength at 294.8 Hz. The impedance analyses further demonstrate that the impedances are perfectly matched between the system and the surrounding background medium at PA.</description><identifier>ISSN: 0003-6951</identifier><identifier>EISSN: 1077-3118</identifier><identifier>DOI: 10.1063/1.4973925</identifier><identifier>CODEN: APPLAB</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Absorption ; Applied physics ; Broadband ; Coupling ; Graphical methods ; Rigid walls ; Sonar ; Sound transmission ; Sound waves</subject><ispartof>Applied physics letters, 2017-01, Vol.110 (2)</ispartof><rights>Author(s)</rights><rights>2017 Author(s). 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We have certified it by using the graphical method in the complex frequency plane. By coupling the LRP to an air cavity in front of the rigid wall, the high efficient (>80%) low-frequency broadband absorption is obtained from 99.1 Hz to 294.8 Hz. Here, the thickness of LRP is only 1/13.5 of the relevant wavelength at 294.8 Hz. The impedance analyses further demonstrate that the impedances are perfectly matched between the system and the surrounding background medium at PA.</description><subject>Absorption</subject><subject>Applied physics</subject><subject>Broadband</subject><subject>Coupling</subject><subject>Graphical methods</subject><subject>Rigid walls</subject><subject>Sonar</subject><subject>Sound transmission</subject><subject>Sound waves</subject><issn>0003-6951</issn><issn>1077-3118</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNqdkEtLxDAQgIMouK4e_AcBTwpd82ia7VEWX7CgBz2HNJ1ol25Tk3SX_ntTdsG7zGFmmI-Z4UPompIFJQW_p4u8lLxk4gTNKJEy45QuT9GMEMKzohT0HF2EsEmtYJzPkHkHb8FErKvgfB8b12Fncev2mfXwM0BnRhzc0NV4r3cQcDVi45vYGN22qXRD30KNw1BN4xa6r_iNPQTX6S7iMIYI20t0ZnUb4OqY5-jz6fFj9ZKt355fVw_rzPCSxyynwGwumdRWltQIqeuC5wUx3JgiZ1SwvOZLrUkFYmkY4QJA1EJWJSFQAeVzdHPY23uXPg9Rbdzgu3RSMcryopQpEnV7oIx3IXiwqvfNVvtRUaImh4qqo8PE3h3YYJqoJzn_g3fO_4Gqry3_BbTAgU8</recordid><startdate>20170109</startdate><enddate>20170109</enddate><creator>Long, Houyou</creator><creator>Cheng, Ying</creator><creator>Tao, Jiancheng</creator><creator>Liu, Xiaojun</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-9140-4742</orcidid></search><sort><creationdate>20170109</creationdate><title>Perfect absorption of low-frequency sound waves by critically coupled subwavelength resonant system</title><author>Long, Houyou ; Cheng, Ying ; Tao, Jiancheng ; Liu, Xiaojun</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c393t-41e2f4727af791c57ad63460c3cc6421524d38aa0be58c2035ee5d57b900ebe13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Absorption</topic><topic>Applied physics</topic><topic>Broadband</topic><topic>Coupling</topic><topic>Graphical methods</topic><topic>Rigid walls</topic><topic>Sonar</topic><topic>Sound transmission</topic><topic>Sound waves</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Long, Houyou</creatorcontrib><creatorcontrib>Cheng, Ying</creatorcontrib><creatorcontrib>Tao, Jiancheng</creatorcontrib><creatorcontrib>Liu, Xiaojun</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Applied physics letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Long, Houyou</au><au>Cheng, Ying</au><au>Tao, Jiancheng</au><au>Liu, Xiaojun</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Perfect absorption of low-frequency sound waves by critically coupled subwavelength resonant system</atitle><jtitle>Applied physics letters</jtitle><date>2017-01-09</date><risdate>2017</risdate><volume>110</volume><issue>2</issue><issn>0003-6951</issn><eissn>1077-3118</eissn><coden>APPLAB</coden><abstract>The perfect absorption (PA) for low-frequency audible sound waves has been achieved by critically coupling the inherent loss factor to the inherent leakage factor of a system, which is constructed by attaching a deep-subwavelength lossy resonant plate (LRP) to a backed rigid wall closely. We have certified it by using the graphical method in the complex frequency plane. By coupling the LRP to an air cavity in front of the rigid wall, the high efficient (>80%) low-frequency broadband absorption is obtained from 99.1 Hz to 294.8 Hz. Here, the thickness of LRP is only 1/13.5 of the relevant wavelength at 294.8 Hz. The impedance analyses further demonstrate that the impedances are perfectly matched between the system and the surrounding background medium at PA.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.4973925</doi><tpages>4</tpages><orcidid>https://orcid.org/0000-0002-9140-4742</orcidid></addata></record> |
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| source | American Institute of Physics (AIP) Journals; Alma/SFX Local Collection |
| subjects | Absorption Applied physics Broadband Coupling Graphical methods Rigid walls Sonar Sound transmission Sound waves |
| title | Perfect absorption of low-frequency sound waves by critically coupled subwavelength resonant system |
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