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Phononic crystal as a neutron detector
Ultrasonics, 2019A perfect phononic crystal model composed of concrete and epoxy, and another defect model of Aluminum/Concrete/Epoxy were proposed. The two models were analyzed computationally and theoretically based on the transfer matrix method. The proposed models were capable of detecting and sensing neutrons irradiations over a wide fluence range based on the ...
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Phonon Images and Phonon Conduction in Trigonal Crystals
1989Monte Carlo phonon-focusing patterns provide graphic illustration of the striking changes in phonon intensity arising from elastic anisotropy and piezoelectric coupling. Patterns for each of the three modes show the basic acoustic symmetry of the crystal and suggest crystallographic directions along which enhanced phonon conductivity can be expected in
A. K. McCurdy, A. G. Every
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Future Prospects of Phononic Crystals and Phononic Metamaterials
2016The principles of operation of phononic crystal structures hold in a variety of frequency ranges starting from a portion of 1 Hertz to a few Tera Hertz. Therefore, phononic crystal structures can be beneficial for a variety of applications at different ranges of frequencies using various configurations and regimes of operation.
Saeed Mohammadi +2 more
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Theory of phonon-phonon interactions in molecular crystals
Journal de Chimie Physique, 1985Some aspects of the theory of phonon-phonon interactions in molecular crystals are developed. Attention is restricted to rigid molecule vibrations. The orientational kinetic energy of a molecule Is expressed In terms of conjugate coordinates and momenta, derived from quaternions.
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Pneumatic Soft Phononic Crystals With Tunable Band Gap
International Journal of Mechanical Sciences, 2023Junrui Jiao
exaly
Deep Learning Aided Topology Optimization of Phononic Crystals
Mechanical Systems and Signal Processing, 2023Pawel Kudela +2 more
exaly
Dynamic visualization of surface phonons in phononic crystals
2011Using ultrashort pulsed optical excitation and interferometric detection, we dynamically image ultrahigh-frequency surface acoustic phonon wavepackets on two-dimensional (2D) phononic crystals. The samples consist of a square lattice of air-filled holes etched in a silicon substrate. Good agreement is found when compared with time-domain finite element
Wright, O. B. +5 more
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Computer Methods in Applied Mechanics and Engineering, 2020
Zhuo Zhuang, Chengcheng Luo, Zhan-Li Liu
exaly
Zhuo Zhuang, Chengcheng Luo, Zhan-Li Liu
exaly