GLORIA

GEOMAR Library Ocean Research Information Access

X

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Comparative Studies. Non-European Languages/Literatures  (2)
Material
Publisher
Person/Organisation
Language
Years
FID
Subjects(RVK)
  • Comparative Studies. Non-European Languages/Literatures  (2)
RVK
  • 1
    Online Resource
    Online Resource
    Angular momentum conservation and symmetry
    Acoustical Society of America (ASA) ; 2016
    In:  Journal of the Acoustical Society of America Vol. 139, No. 4_Supplement ( 2016-04-01), p. 2040-2040
    Details
    In: Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 139, No. 4_Supplement ( 2016-04-01), p. 2040-2040
    Abstract: The conservation of angular momentum during the interactions of sound fields with objects is associated with the symmetry in the fields and the objects. Simple arguments of symmetry and/or conservation can have efficient applications in analyses of angular momentum transfer during the interactions. Scenarios that will be illustrated include: (a) conserved phase distribution for analysis of torques exerted by vortex beams on axis-symmetric objects for its connection with absorption [L. Zhang and P. L. Marston, JASA 129, 1679–1680 (2011); Phys. Rev. E. 84, 065601 (2011)], (b) symmetric superposition of vortex beams for analysis of torques exerted by orthogonal waves on a small compressible object in a slightly viscous fluid [L. Zhang and P. L. Marston, JASA 136, 2917–2921 (2014)] , and (c) broken symmetry in a planar meta-screen for introducing angular momentum into a plane sound field of null angular momentum [Y. Li et al., Phys. Rev. Appl. 4, 024003 (2015); X. Jiang et al., in preparation].
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.4950031
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2016
    detail.hit.zdb_id: 1461063-2
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 2
    Online Resource
    Online Resource
    Metascreen-based acoustic passive phased array with sub-wavelength resolution
    Acoustical Society of America (ASA) ; 2015
    In:  The Journal of the Acoustical Society of America Vol. 138, No. 3_Supplement ( 2015-09-01), p. 1752-1752
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 138, No. 3_Supplement ( 2015-09-01), p. 1752-1752
    Abstract: A phased source array is an array consisting of elementary sources with proper relative phases to steer a wavefront, so as to form desired wave fields of specific property and applications. However, the phased array requires a large number of sources in forming complex wavefront or non-paraxial wave beams, leading to high cost and complexity in the electronics required to operate individual sources of the active array. A passive metascreen is presented here to transmit sound energy from a single source and steer the transmitted wavefront to form desired fields. The metascreen plays a role like a phased array but with a passive way that avoids the complexity of an active array. The screen has a half-wavelength thickness and composes of a series of elements with a dimension of one-tenth of the sound wavelength along the screen. The elements have a hybrid structure designed for high transmission and full range of phase shift. The performance of the screen is numerically simulated and experimentally demonstrated to generate a self-bending beam in non-paraxial region. The screen with its simple configuration and extreme acoustic performance could have applications for sound field shaping in numerous areas where the conventional array would have complexity and limited capability.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.4933535
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2015
    detail.hit.zdb_id: 1461063-2
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...