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- W2127200749 abstract "Multiple scattering theory is a versatile two- and three-dimensional method for characterizing the acoustic wave transmission through many scatterers. It provides analytical solutions to wave propagation in scattering structures, and its computational complexity grows logarithmically with the number of scatterers. In this paper we show how the 2D method can be adapted to include the effects of time-varying material parameters. Specifically, a new T-matrix is defined to include the effects of frequency modulation that occurs in time-varying phononic crystals. Solutions were verified against finite difference time domain (FDTD) simulations and showed excellent agreement. This new method enables fast characterization of time-varying phononic crystals without the need to resort to lengthy FDTD simulations. Also, the method of combining T-matrices to form the T-supermatrix remains unchanged provided that the new matrix definitions are used. The method is quite compatible with existing implementations of multiple scattering theory and could be readily extended to three-dimensional multiple scattering theory." @default.
- W2127200749 created "2016-06-24" @default.
- W2127200749 creator A5036195583 @default.
- W2127200749 creator A5055039109 @default.
- W2127200749 date "2010-02-25" @default.
- W2127200749 modified "2023-10-17" @default.
- W2127200749 title "Two-dimensional phononic crystals with time-varying properties: a multiple scattering analysis" @default.
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- W2127200749 doi "https://doi.org/10.1088/0964-1726/19/4/045006" @default.
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