• Login
    View Item 
    •   Treasures Home
    • Academic Schools and Programs
    • School of Natural Sciences and Mathematics
    • NSM Faculty Research
    • Zhang, Fan
    • View Item
    •   Treasures Home
    • Academic Schools and Programs
    • School of Natural Sciences and Mathematics
    • NSM Faculty Research
    • Zhang, Fan
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Observation of Acoustic Valley Vortex States and Valley-Chirality Locked Beam Splitting

    Thumbnail
    View/Open
    Article (5.562Mb)
    Date
    2017-05-23
    Author
    Ye, Liping
    Qiu, Chunyin
    Lu, Jiuyang
    Wen, Xinhua
    Shen, Yuanyuan
    Ke, Manzhu
    Zhang, Fan
    Liu, Zhengyou
    Metadata
    Show full item record
    Abstract
    Abstract
    We report an experimental observation of the classical version of valley polarized states in a two-dimensional hexagonal sonic crystal. The acoustic valley states, which carry specific linear momenta and orbital angular momenta, were selectively excited by external Gaussian beams and conveniently confirmed by the pressure distribution outside the crystal, according to the criterion of momentum conservation. The vortex nature of such intriguing bulk crystal states was directly characterized by scanning the phase profile inside the crystal. In addition, we observed a peculiar beam-splitting phenomenon, in which the separated beams are constructed by different valleys and locked to the opposite vortex chirality. The exceptional sound transport, encoded with valley-chirality locked information, may serve as the basis of designing conceptually interesting acoustic devices with unconventional functions.
    URI
    http://hdl.handle.net/10735.1/6128
    Collections
    • Zhang, Fan

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV
     

     

    Browse

    All of TreasuresCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    Login

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV