Results 11 to 20 of about 2,673 (256)
Higher-order Dirac sonic crystals [PDF]
Physical Review Letters, 2020 Abstract Discovering new topological phases of matter is a major theme in fundamental physics and materials science1,2. Dirac semimetal features isolated fourfold linear band crossings, i.e., Dirac points, and provides an exceptional platform for exploring topological phase transitions under symmetry breaking3.
Chunyin Qiu +3 more
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Matryoshka locally resonant sonic crystal [PDF]
The Journal of the Acoustical Society of America, 2011 The results of numerical modeling of sonic crystals with resonant array elements are reported. The investigated resonant elements include plain slotted cylinders as well as their various combinations, in particular, Russian doll or Matryoshka configurations. The acoustic band structure and transmission characteristics of such systems have been computed
Elford, Daniel +3 more
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Acta Acustica, 2021 Sonic crystal acoustic screens have been in progressive research and development in the last two decades as a technical solution for mitigating traffic noise.
Peiró-Torres M.P. +5 more
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Improvement of Sound Insulation Through Double-Panel Structure by Using Hybrid Local Resonator Array [PDF]
Archives of Acoustics, 2023 In this paper, we present one approach to improve the soundproofing performance of the double-panel structure (DPS) in the entire audible frequencies, in which two kinds of local resonances, the breathing-type resonance and the Helmholtz resonance, are ...
Kyong-Su Ri +2 more
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Nondiffractive propagation in sonic crystals [PDF]
The Journal of the Acoustical Society of America, 2006 Sonic crystals are media with a periodic modulation of the acoustic parameters, such as the density and the bulk modulus. They have recently attracted a great interest, because of their potential applications in the control of sound propagation, used as reflectors, focusers, or waveguides. All these properties are related with the dispersion introduced
Victor J. Sanchez-Morcillo +4 more
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Acoustic suppressed topological refraction in valley sonic crystals
New Journal of Physics, 2022 We report both experimentally and numerically that an acoustic suppressed topological refraction is realized by two kagome-lattice valley sonic crystals (VSCs).
Bing-bing Wang +4 more
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Particle Swarm Optimization of Resonant Sonic Crystals Noise Barriers
IEEE Access, 2023 The study of technological materials made by meticulously arranging acoustic elements has received a lot of attention over the past three decades with the goal of generating improved acoustic properties, often going beyond the behavior of materials found
David Ramirez-Solana +3 more
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Increasing the Insertion Loss of Sonic Crystal Noise Barriers with Helmholtz Resonators
Applied Sciences, 2023 Helmholtz resonators (HRs) have the advantage of extending and improving their insulating capacity when used as scatterers in noise barriers made of periodic media, such as sonic crystals (SCs).
Javier Redondo +2 more
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Valley-locked waveguide transport in acoustic heterostructures
Nature Communications, 2020 Here, by constructing a heterostructure with sonic crystals, a topological waveguide is realized by the authors. The waveguide states feature gapless dispersion, momentum-valley locking, immunity against defects, and a high capacity for energy transport.
Mudi Wang +5 more
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Band topology in classical waves: Wilson-loop approach to topological numbers and fragile topology
New Journal of Physics, 2019 The rapid development of topological photonics and acoustics calls for accurate understanding of band topology in classical waves, which is not yet achieved in many situations.
Hai-Xiao Wang +2 more
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