1,842 research outputs found

    Surface optomechanics: Calculating optically excited acoustical whispering gallery modes in microspheres

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    Stimulated Brillouin scattering recently allowed experimental excitation of surface acoustic resonances in micro-devices, enabling vibration at rates in the range of 50 MHz to 12 GHz. The experimental availability of such mechanical whispering gallery modes in photonic-MEMS raises questions on their structure and spectral distribution. Here we calculate the form and frequency of such vibrational surface whispering gallery modes, revealing diverse types of surface vibrations including longitudinal, transverse, and Rayleigh-type deformations. We parametrically investigate these various modes by changing their orders in the azimuthal, radial, and polar directions to reveal different vibrational structures including mechanical resonances that are localized near the interface with the environment where they can sense changes in the surroundings.Comment: 10 pages, 5 figures, 1 table; journal paper - Optics Express, Accepted for pub. as of 20 Jun 201

    Seymour\u27s Teaching the Way of Jesus: Educating Christians for Faithful Living (Book Review)

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    A Review of Teaching the Way of Jesus: Educating Christians for Faithful Living, by Jack L. Seymour. Nashville, TN: Abingdon Press, 2014. 201 pp. $29.99. ISBN 9781462765056

    The autocorrelation of the Mobius function and Chowla's conjecture for the rational function field

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    We prove a function field version of Chowla's conjecture on the autocorrelation of the Mobius function in the limit of a large finite field.Comment: Added background details about discriminants and resultants, and more minor change

    For operation of the Computer Software Management and Information Center (COSMIC)

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    Computer programs for relational information management data base systems, spherical roller bearing analysis, a generalized pseudoinverse of a rectangular matrix, and software design and documentation language are summarized

    For operation of the Computer Software Management and Information Center (COSMIC)

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    During the month of June, the Survey Research Center (SRC) at the University of Georgia designed new benefits questionnaires for computer software management and information center (COSMIC). As a test of their utility, these questionnaires are now used in the benefits identification process

    For operation of the Computer Software Management and Information Center (COSMIC)

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    Computer programs for large systems of normal equations, an interactive digital signal process, structural analysis of cylindrical thrust chambers, swirling turbulent axisymmetric recirculating flows in practical isothermal combustor geometrics, computation of three dimensional combustor performance, a thermal radiation analysis system, transient response analysis, and a software design analysis are summarized
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