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    Elastic Metamaterials with Simultaneously Negative Effective Shear Modulus and Mass Density

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    Type
    Article
    Authors
    Wu, Ying cc
    Lai, Yun
    Zhang, Zhao-Qing
    KAUST Department
    Applied Mathematics and Computational Science Program
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Date
    2011-09-02
    Preprint Posting Date
    2011-02-23
    Permanent link to this record
    http://hdl.handle.net/10754/553009
    
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    Abstract
    We propose a type of elastic metamaterial comprising fluid-solid composite inclusions which can possess a negative shear modulus and negative mass density over a large frequency region. Such a material has the unique property that only transverse waves can propagate with a negative dispersion while longitudinal waves are forbidden. This leads to many interesting phenomena such as negative refraction, which is demonstrated by using a wedge sample and a significant amount of mode conversion from transverse waves to longitudinal waves that cannot occur on the interface of two natural solids.
    Citation
    Elastic Metamaterials with Simultaneously Negative Effective Shear Modulus and Mass Density 2011, 107 (10) Physical Review Letters
    Publisher
    American Physical Society (APS)
    Journal
    Physical Review Letters
    DOI
    10.1103/PhysRevLett.107.105506
    arXiv
    1102.4679
    Additional Links
    http://link.aps.org/doi/10.1103/PhysRevLett.107.105506
    http://arxiv.org/abs/1102.4679
    ae974a485f413a2113503eed53cd6c53
    10.1103/PhysRevLett.107.105506
    Scopus Count
    Collections
    Articles; Applied Mathematics and Computational Science Program; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

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