Tailoring phonon band structures with broken symmetry by shaping spatiotemporal modulations of stiffness in a one-dimensional elastic waveguide
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PhysRevB.96.064304.pdf
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FInal Published Version
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Univ Arizona, Dept Mat Sci & EngnIssue Date
2017-08-17
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AMER PHYSICAL SOCCitation
Tailoring phonon band structures with broken symmetry by shaping spatiotemporal modulations of stiffness in a one-dimensional elastic waveguide 2017, 96 (6) Physical Review BJournal
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© 2017 American Physical Society.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
Spatiotemporal modulations of the elastic properties of materials can be used to break time and parity symmetry of elastic waves. We show that the form of the elastic band structure depends not only on the spatial and temporal periodicity of a spatiotemporal modulation but also on its shape through its Fourier components. We demonstrate that hybridization gaps open from interactions between the Bloch modes of the periodic medium in absence of the temporal variation of the modulation and the combined sinusoidal components of the Fourier decomposition of the periodic modulation.ISSN
2469-99502469-9969
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Final published versionSponsors
NSF [1640860]Additional Links
https://link.aps.org/doi/10.1103/PhysRevB.96.064304ae974a485f413a2113503eed53cd6c53
10.1103/PhysRevB.96.064304