Ultrathin Acoustic Parity-Time Symmetric Metasurface Cloak
![Thumbnail](/xmlui/bitstream/handle/10234/184154/66146.pdf.jpg?sequence=5&isAllowed=y)
Ver/ Abrir
Impacto
![Google Scholar](/xmlui/themes/Mirage2/images/uji/logo_google.png)
![Microsoft Academico](/xmlui/themes/Mirage2/images/uji/logo_microsoft.png)
Metadatos
Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/2507
comunitat-uji-handle3:10234/6973
comunitat-uji-handle4:
INVESTIGACIONMetadatos
Título
Ultrathin Acoustic Parity-Time Symmetric Metasurface CloakAutoría
Fecha de publicación
2019Editor
American Association for the Advancement of ScienceISSN
2639-5274Cita bibliográfica
LI, Hao-xiang, et al. Ultrathin acoustic parity-time symmetric metasurface cloak. Research, 2019, vol. 2019, p. 8345683Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://spj.sciencemag.org/research/2019/8345683/?utm_source=trendmd&utm_medium= ...Versión
info:eu-repo/semantics/publishedVersionResumen
Invisibility or unhearability cloaks have beenmade possible by using metamaterials enabling light or sound to flow around obstacle
without the trace of reflections or shadows. Metamaterials are known for being flexible ... [+]
Invisibility or unhearability cloaks have beenmade possible by using metamaterials enabling light or sound to flow around obstacle
without the trace of reflections or shadows. Metamaterials are known for being flexible building units that can mimic a host of
unusual and extreme material responses, which are essential when engineering artificial material properties to realize a coordinate
transforming cloak. Bending and stretching the coordinate grid in space require stringent material parameters; therefore, small
inaccuracies and inevitablematerial losses become sources for unwanted scattering that are decremental to the desired effect.These
obstacles further limit the possibility of achieving a robust concealment of sizeable objects from either radar or sonar detection. By
using an elaborate arrangement of gain and lossy acousticmedia respecting parity-time symmetry, we built a one-way unhearability
cloak able to hide objects seven times larger than the acoustic wavelength. Generally speaking, our approach has no limits in terms
of working frequency, shape, or size, specifically though we demonstrate how, in principle, an object of the size of a human can be
hidden from audible sound. [-]
Publicado en
Research, 2019, vol. 2019, p. 8345683Proyecto de investigación
his work was supported by the National Key R&D Program of China (Grant No. 2017YFA0303700), the National Natural Science Foundation of China (Grant No. 11634006) and the Innovation Special Zone of National Defense Science and Technology. Daniel Torrent acknowledges the support from the MINECO through a Ramón y Cajal grant (Grant no. RYC-2016-21188). Johan Christensen acknowledges the support from the European Research Council (ERC) through the Starting Grant no. 714577 PHONOMETA and from the MINECO through a Ramón y Cajal grant (Grant no. RYC-2015-17156)Derechos de acceso
info:eu-repo/semantics/openAccess
Aparece en las colecciones
- INIT_Articles [752]
- FCA_Articles [511]
El ítem tiene asociados los siguientes ficheros de licencia: