KAUST DepartmentApplied Mathematics and Computational Science Program
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Waves in Complex Media Research Group
Online Publication Date2014-11-13
Print Publication Date2015-05
Permanent link to this recordhttp://hdl.handle.net/10754/336999
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AbstractWe numerically realize the acoustic rainbow trapping effect by tapping an air waveguide with space-coiling metamaterials. Due to the high refractive-index of the space-coiling metamaterials, our device is more compact compared to the reported trapped-rainbow devices. A numerical model utilizing effective parameters is also calculated, whose results are consistent well with the direct numerical simulation of space-coiling structure. Moreover, such device with the capability of dropping different frequency components of a broadband incident temporal acoustic signal into different channels can function as an acoustic wavelength division de-multiplexer. These results may have potential applications in acoustic device design such as an acoustic filter and an artificial cochlea.
CitationAcoustic rainbow trapping by coiling up space 2014, 4:7038 Scientific Reports
SponsorsThe work was jointly supported by the National Basic Research Program of China (Grant No. 2012CB921503 and No. 2013CB632702) and the National Nature Science Foundation of China (Grant No. 1134006, No. 11474158, and No. 11404164). We also acknowledge the support from Academic Program Development of Jiangsu Higher Education (PAPD) and the support from the Fundamental Research Funds for the Central Universities.
PubMed Central IDPMC4229664
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