Zobrazeno 1 - 10
of 64
pro vyhledávání: '"Christophe Aristégui"'
Autor:
Benoit Tallon, Artem Kovalenko, Olivier Poncelet, Christophe Aristégui, Olivier Mondain-Monval, Thomas Brunet
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-6 (2021)
Abstract Negative refraction of acoustic waves is demonstrated through underwater experiments conducted at ultrasonic frequencies on a 3D locally resonant acoustic metafluid made of soft porous silicone-rubber micro-beads suspended in a yield-stress
Externí odkaz:
https://doaj.org/article/10a6631007514c6eaecb718e26dc37f4
Autor:
Thomas Lacour, Romain Poupart, Olivier Mondain-Monval, Christophe Aristégui, Olivier Poncelet, Thomas Brunet
Publikováno v:
Journal of Applied Physics. 133
Dedicated coating materials for anechoism and furtivity in underwater acoustics must exhibit a strong reliability regarding their mechanical resistance to hydrostatic pressure. Soft porous materials, especially, a distribution of soft porous beads wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5693d5df531716fac20023da7e7983a4
https://doi.org/10.1063/5.0144249
https://doi.org/10.1063/5.0144249
Autor:
Christophe Aristégui, Benoit Tallon, Olivier Mondain-Monval, Thomas Brunet, Olivier Poncelet, Artem Kovalenko
Publikováno v:
Scientific Reports
Scientific Reports, Nature Publishing Group, 2021, 11, pp.4627. ⟨10.1038/s41598-021-84018-x⟩
Scientific Reports, Vol 11, Iss 1, Pp 1-6 (2021)
Scientific Reports, Nature Publishing Group, 2021, 11, pp.4627. ⟨10.1038/s41598-021-84018-x⟩
Scientific Reports, Vol 11, Iss 1, Pp 1-6 (2021)
Negative refraction of acoustic waves is demonstrated through underwater experiments conducted at ultrasonic frequencies on a 3D locally resonant acoustic metafluid made of soft porous silicone-rubber micro-beads suspended in a yield-stress fluid. By
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::221fdf3d8e1f518e1e7725fdaef2dd11
Publikováno v:
The Anglo-French Physical Acoustics Conference (AFPAC) 2020
The Anglo-French Physical Acoustics Conference (AFPAC) 2020, Jan 2020, Sanderstead, United Kingdom. pp.012003, ⟨10.1088/1742-6596/1761/1/012003⟩
The Anglo-French Physical Acoustics Conference (AFPAC) 2020, Jan 2020, Sanderstead, United Kingdom. pp.012003, ⟨10.1088/1742-6596/1761/1/012003⟩
We consider theoretically the scattering of an incident evanescent plane wave by a spherical particle. The scattering problem is treated in a classic way by applying the T-matrix formalism and the resulting field is expressed on the basis of the diff
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::871481c556a8527b327d7d6abbf3fb7a
https://doi.org/10.1088/1742-6596/1761/1/012003
https://doi.org/10.1088/1742-6596/1761/1/012003
Autor:
Abdoulaye, Ba, Artem, Kovalenko, Christophe, Aristégui, Olivier, Mondain-Monval, Thomas, Brunet
Publikováno v:
Scientific Reports
Scientific Reports, Nature Publishing Group, 2017, 7 (1), pp.1-6. ⟨10.1038/srep40106⟩
Scientific Reports, Nature Publishing Group, 2017, 7 (1), pp.1-6. ⟨10.1038/srep40106⟩
International audience; Soft porous silicone rubbers are demonstrated to exhibit extremely low sound speeds of tens of m/s for these dense materials, even for low porosities of the order of a few percent. Our ultrasonic experiments show a sudden drop
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid_dedup__::ee4aec0a9b20df6d61104383312a4514
https://hal.archives-ouvertes.fr/hal-02901486
https://hal.archives-ouvertes.fr/hal-02901486
Publikováno v:
The Journal of the Acoustical Society of America. 133:17-24
Attention is focused on the propagation of antiplane coherent wave obliquely incident on mutually parallel and randomly distributed cracks. A fundamental question in this study concerns the ability of describing the coherent wave propagation in all d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fc32694a73dec6adcdaa5ea11d9578bf
https://doi.org/10.1121/1.4770257
https://doi.org/10.1121/1.4770257
Publikováno v:
2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS).
An original criterion defining the sign of the acoustic refractive index from those of the real and imaginary parts of the constitutive parameters of dissipative isotropic media sustaining acoustic plane wave propagation, is established. We observe t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94ba5fdd4e4237c693e12e352c958b33
https://doi.org/10.1109/metamaterials.2016.7746511
https://doi.org/10.1109/metamaterials.2016.7746511
Autor:
Oliver Mondain-Monval, Simon Raffy, Christophe Aristégui, Benoit Mascaro, Olivier Poncelet, Jacques Leng, Thomas Brunet
Publikováno v:
2016 Progress in Electromagnetic Research Symposium (PIERS).
The extraordinary properties of acoustic (random) metamaterials, such as negative refractive index, originate from low frequency resonances of sub-wavelength particles. While most of these functional materials are fabricated by mechanical engineering
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6458bdc1bcdd429572c86853a28ff6a0
https://doi.org/10.1109/piers.2016.7734223
https://doi.org/10.1109/piers.2016.7734223
Autor:
Mihai Caleap, Christophe Aristégui
Publikováno v:
Waves in Random and Complex Media. 20:551-568
For a random and uniform distribution of (viscous) fluid-filled strip-like cracks with varying width and orientation, the effective wavenumber K of an antiplane coherent wave is calculated basing on Foldy's approximation. Applications to randomly ori
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c5a95f1a2cc74c071daacaf2c7d6b6e8
https://doi.org/10.1080/17455030.2010.482573
https://doi.org/10.1080/17455030.2010.482573
Autor:
Yves C. Angel, Christophe Aristégui
Publikováno v:
Wave Motion. 47:199-204
In the context of plane-wave propagation, the concept of replacing a fluid region containing distributed inclusions with an effective medium is examined. Attention is focused on a screen region of finite thickness, and the behavior of the displacemen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::748be290b01424a54c052fa72dd36b90
https://doi.org/10.1016/j.wavemoti.2009.11.004
https://doi.org/10.1016/j.wavemoti.2009.11.004