Zobrazeno 1 - 10
of 294
pro vyhledávání: '"Page, John H"'
We show how resonant (near-field) coupling affects wave transport in disordered media through ultrasonic experiments in concentrated suspensions. The samples consist of resonant emulsions in which oil droplets are suspended in a liquid gel. By varyin
Externí odkaz:
http://arxiv.org/abs/2208.11684
We study Anderson localization of a scalar wave in an ensemble of resonant point scatterers embedded in an anisotropic background medium. For uniaxial anisotropy of moderate strength, the mobility edges and the critical exponent of the localization t
Externí odkaz:
http://arxiv.org/abs/2107.12199
Autor:
Tallon, Benoit, Roux, Philippe, Matte, Guillaume, Guillard, Jean, Page, John H., Skipetrov, Sergey E.
A dramatic slowing down of acoustic wave transport in dense fish shoals is observed in open-sea fish cages. By employing a multi-beam ultrasonic antenna, we observe the coherent backscattering (CBS) phenomenon. We extract key parameters of wave trans
Externí odkaz:
http://arxiv.org/abs/2103.01375
Autor:
Lanoy, Maxime, Lemoult, Fabrice, Lerosey, Geoffroy, Tourin, Arnaud, Leroy, Valentin, Page, John H.
A sound wave travelling in water is scattered by a periodic assembly of air bubbles. The local structure matters even in the low frequency regime. If the bubbles are arranged in a face-centered cubic (fcc) lattice, a total band gap opens near the Min
Externí odkaz:
http://arxiv.org/abs/2101.02048
Publikováno v:
Phys. Rev. B 102, 220201 (2020)
We study the transport of classical waves through three-dimensional (3D) anisotropic media close to the Anderson localization transition. Time-, frequency-, and position-resolved ultrasonic measurements are performed on anisotropic slab-shaped mesogl
Externí odkaz:
http://arxiv.org/abs/2011.09560
A bubble meta-screen is an exceptionally effective and low frequency resonator which can be optimized in order to exactly balance the energy provided by radiative process and lost under a viscous mechanism (critical coupling). Under this condition, o
Externí odkaz:
http://arxiv.org/abs/1808.02509
Having a material that is matched in acoustic impedance with the surrounding medium is a considerable asset for many underwater acoustic applications. In this work, impedance matching is achieved by dispersing small, deeply subwavelength sized partic
Externí odkaz:
http://arxiv.org/abs/1805.12192
Autor:
Lanoy, Maxime, Page, John H., Lerosey, Geoffroy, Lemoult, Fabrice, Tourin, Arnaud, Leroy, Valentin
Publikováno v:
Phys. Rev. B 96, 220201 (2017)
Using a Multiple Scattering Theory algorithm, we investigate numerically the transmission of ultrasonic waves through a disordered locally resonant metamaterial containing only monopolar resonators. By comparing the cases of a perfectly random medium
Externí odkaz:
http://arxiv.org/abs/1710.03341
Autor:
Dzaye, Omar, Razavi, Alexander C., Michos, Erin D., Mortensen, Martin Bødtker, Dardari, Zeina A., Nasir, Khurram, Osei, Albert D., Peng, Allison W., Blankstein, Ron, Page, John H., Blaha, Michael J.
Publikováno v:
In Atherosclerosis April 2022 347:70-76
Autor:
Aubry, Alexandre, Cobus, Laura A., Skipetrov, Sergey E., van Tiggelen, Bart A., Derode, Arnaud, Page, John H.
Publikováno v:
Phys. Rev. Lett. 112, 043903, 2014
We report on ultrasonic measurements of the propagation operator in a strongly scattering mesoglass. The backscattered field is shown to display a deterministic spatial coherence due to a remarkably large memory effect induced by long recurrent traje
Externí odkaz:
http://arxiv.org/abs/1306.2762