Journal ArticleDOI
Interaction of Rayleigh waves with randomly distributed oscillators on the surface.
TLDR
In this paper, the attenuation of Rayleigh waves due to their interaction with resonating structures randomly distributed on the surface of a semi-infinite elastic medium is calculated along with the Rayleigh wave frequency.Abstract:
The attenuation of Rayleigh waves due to their interaction with resonating structures randomly distributed on the surface of a semi-infinite elastic medium is calculated along with the Rayleigh wave frequency. The resonating structures are modeled by single oscillators coupled to the displacement field at the surface of the elastic medium. Using the coherent potential approximation, the dependence of the frequency and damping constant of the Rayleigh waves on wave vectors are determined for various values of the concentration of oscillators on the surface.read more
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Journal ArticleDOI
Blocking Phonon Transport by Structural Resonances in Alloy-Based Nanophononic Metamaterials Leads to Ultralow Thermal Conductivity
Shiyun Xiong,Shiyun Xiong,Kimmo Sääskilahti,Yuriy A. Kosevich,Yuriy A. Kosevich,Haoxue Han,Davide Donadio,Sebastian Volz +7 more
TL;DR: Atomic simulations show that the metamaterials approach relying on localized resonances is very promising to engineer heat transport at the nanoscale, and establish a rationale between the size, shape, and period of the resonant structures, and the thermal conductivity of the nanowire.
Journal ArticleDOI
Interaction of a contact resonance of microspheres with surface acoustic waves.
Nicholas Boechler,Jeffrey K. Eliason,Anshuman Kumar,Alexei Maznev,Keith A. Nelson,Nicholas X. Fang +5 more
TL;DR: The measured dispersion curves exhibit "avoided crossing" behavior due to the hybridization of the SAWs with the microsphere resonance, and are compared with those predicted by the analytical model and find excellent agreement.
Interaction of a Contact Resonance of Microspheres with Surface Acoustic Waves
Nicholas Boechler,Jeffrey K. Eliason,Anshuman Kumar,Alexei Maznev,Keith A. Nelson,Nicholas X. Fang +5 more
TL;DR: In this article, the interaction of surface acoustic waves (SAWs) with the contact-based, axial vibrational resonance of 1 μm silica microspheres forming a two-dimensional granular crystal adhered to a substrate was studied.
Journal ArticleDOI
Double-negative flexural acoustic metamaterial
Vitalyi Gusev,Oliver B. Wright +1 more
TL;DR: In this article, an acoustic metamaterial for flexural waves with both negative density and elastic modulus is presented by means of an analytical lumped-element approach, which introduces a combination of resonant elements on the surface of a plate.
Journal ArticleDOI
Complex Contact-Based Dynamics of Microsphere Monolayers Revealed by Resonant Attenuation of Surface Acoustic Waves
Morgan Hiraiwa,M. Abi Ghanem,Samuel P. Wallen,Amey Khanolkar,Alexei Maznev,Nicholas Boechler +5 more
TL;DR: This study study of contact-based vibrations of a two-dimensional monolayer of micron-sized spheres on a solid substrate that forms a microscale granular crystal yields a new approach to studying micro- to nanoscale contact mechanics in multiparticle networks.