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dc.contributor.authorPeng, Pai
dc.contributor.authorXiao, Bingmu
dc.contributor.authorWu, Ying
dc.date.accessioned2015-08-03T12:09:52Z
dc.date.available2015-08-03T12:09:52Z
dc.date.issued2014-10
dc.identifier.citationPeng, P., Xiao, B., & Wu, Y. (2014). Flat acoustic lens by acoustic grating with curled slits. Physics Letters A, 378(45), 3389–3392. doi:10.1016/j.physleta.2014.09.042
dc.identifier.issn03759601
dc.identifier.doi10.1016/j.physleta.2014.09.042
dc.identifier.urihttp://hdl.handle.net/10754/563781
dc.description.abstractWe design a flat sub-wavelength lens that can focus acoustic wave. We analytically study the transmission through an acoustic grating with curled slits, which can serve as a material with tunable impedance and refractive index for acoustic waves. The effective parameters rely on the geometry of the slits and are independent of frequency. A flat acoustic focusing lens by such acoustic grating with gradient effective refractive index is designed. The focusing effect is clearly observed in simulations and well predicted by the theory. We demonstrate that despite the large impedance mismatch between the acoustic lens and the matrix, the intensity at the focal point is still high due to Fabry-Perot resonance.
dc.description.sponsorshipThis work was supported by the Baseline Research Fund of King Abdullah University of Science and Technology.
dc.publisherElsevier BV
dc.subjectAcoustic focusing
dc.subjectEffective medium theory
dc.subjectGradient index
dc.titleFlat acoustic lens by acoustic grating with curled slits
dc.typeArticle
dc.contributor.departmentApplied Mathematics and Computational Science Program
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentEarth Science and Engineering Program
dc.contributor.departmentGraduate Affairs Operations
dc.contributor.departmentWaves in Complex Media Research Group
dc.identifier.journalPhysics Letters A
kaust.personPeng, Pai
kaust.personXiao, Bingmu
kaust.personWu, Ying


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