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dc.contributor.authorPeng, Pai
dc.contributor.authorQiu, Chunyin
dc.contributor.authorLiu, Zhengyou
dc.contributor.authorWu, Ying
dc.date.accessioned2015-08-03T11:53:55Z
dc.date.available2015-08-03T11:53:55Z
dc.date.issued2014-05-22
dc.identifier.citationPeng, P., Qiu, C., Liu, Z., & Wu, Y. (2014). Controlling elastic waves with small phononic crystals containing rigid inclusions. EPL (Europhysics Letters), 106(4), 46003. doi:10.1209/0295-5075/106/46003
dc.identifier.issn02955075
dc.identifier.doi10.1209/0295-5075/106/46003
dc.identifier.urihttp://hdl.handle.net/10754/563537
dc.description.abstractWe show that a two-dimensional elastic phononic crystal comprising rigid cylinders in a solid matrix possesses a large complete band gap below a cut-off frequency. A mechanical model reveals that the band gap is induced by negative effective mass density, which is affirmed by an effective medium theory based on field averaging. We demonstrate, by two examples, that such elastic phononic crystals can be utilized to design small devices to control low-frequency elastic waves. One example is a waveguide made of a two-layer anisotropic elastic phononic crystal, which can guide and bend elastic waves with wavelengths much larger than the size of the waveguide. The other example is the enhanced elastic transmission of a single-layer elastic phononic crystal loaded with solid inclusions. The effective mass density and reciprocal of the modulus of the single-layer elastic phononic crystal are simultaneously near zero. © CopyrightEPLA, 2014.
dc.description.sponsorshipThe authors would like to thank Dr. FEIYAN CAI for discussions. This work was supported by the KAUST Baseline Research Fund and the NSFC grant 11174225 is gratefully acknowledged.
dc.publisherIOP Publishing
dc.titleControlling elastic waves with small phononic crystals containing rigid inclusions
dc.typeArticle
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentApplied Mathematics and Computational Science Program
dc.contributor.departmentWaves in Complex Media Research Group
dc.identifier.journalEPL (Europhysics Letters)
dc.contributor.institutionKey Laboratory of Artificial Micro- and Nano-structures of the Ministry of Education, China and School of Physics and Technology, Wuhan University, Wuhan 430072, China
kaust.personPeng, Pai
kaust.personWu, Ying
dc.date.published-online2014-05-22
dc.date.published-print2014-05-01


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