Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Aubry, Geoffroy J."'
We carry out dynamical microwave transport experiments in aperiodic Vogel spiral arrays of cylinders with high dielectric permittivity. We experimentally disclose the electromagnetic modal structure of these structures in real space showing that they
Externí odkaz:
http://arxiv.org/abs/2307.12638
Localization of electronic wave functions in modern two-dimensional (2D) materials such as graphene can impact drastically their transport and magnetic properties. The recent localization landscape (LL) theory has brought many tools and theoretical r
Externí odkaz:
http://arxiv.org/abs/2210.00806
Publikováno v:
Opt. Express 29, 14367 (2021)
Disordered dielectrics with structural correlations on length scales comparable to visible light wavelengths exhibit complex optical properties. Such materials exist in nature, leading to beautiful structural non-iridescent color, and they are also i
Externí odkaz:
http://arxiv.org/abs/2012.14921
Publikováno v:
Adv.Optical Mater. 9, 2001699 (2021)
Photonic crystals with a sufficiently high refractive index contrast display partial or full band gaps. However, imperfections in the metamaterial cause light scattering and extinction of the interfering propagating waves. Positive as well as negativ
Externí odkaz:
http://arxiv.org/abs/2006.15620
Autor:
Aubry, Geoffroy J., Froufe-Pérez, Luis S., Kuhl, Ulrich, Legrand, Olivier, Scheffold, Frank, Mortessagne, Fabrice
Publikováno v:
Phys. Rev. Lett. 125, 127402 (2020)
We present wave transport experiments in hyperuniform disordered arrays of cylinders with high dielectric permittivity. Using microwaves, we show that the same material can display transparency, photon diffusion, Anderson localization, or a full band
Externí odkaz:
http://arxiv.org/abs/2003.00913
Publikováno v:
Phys. Rev. A 100, 043818 (2019)
Transport of coherent waves in multiple-scattering media may exhibit fundamental, non intuitive phenomena such as halt of diffusion by disorder called Anderson localization. For electromagnetic waves, this phenomenon was observed only in one and two
Externí odkaz:
http://arxiv.org/abs/1812.06447
Autor:
Aubry, Geoffroy J., Roux, Philippe
Publikováno v:
Phys. Rev. Lett. 123, 035503 (2019)
In this Letter, we report on the effects of a vorticity filament on the coherent backscattering cone. Using ultrasonic waves in a strongly reverberating cavity, we experimentally show that the discrete number of loops of acoustic paths around a point
Externí odkaz:
http://arxiv.org/abs/1811.00800
Autor:
Schertel, Lukas, Wimmer, Ilona, Besirske, Patricia, Aegerter, Christof M., Maret, Georg, Polarz, Sebastian, Aubry, Geoffroy J.
Publikováno v:
Phys. Rev. Materials 3, 015203 (2019)
Materials with extreme photonic properties such as maximum diffuse reflectance, high albedo, or tunable band gaps are essential in many current and future photonic devices and coatings. While photonic crystals, periodic anisotropic structures, are we
Externí odkaz:
http://arxiv.org/abs/1810.04403
Autor:
Aubry, Geoffroy J., Schertel, Lukas, Chen, Mengdi, Weyer, Henrik, Aegerter, Christof M., Polarz, Sebastian, Cölfen, Helmut, Maret, Georg
Publikováno v:
Phys. Rev. A 96, 043871 (2017)
A fundamental quantity in multiple scattering is the transport mean free path the inverse of which describes the scattering strength of a sample. In this paper, we emphasize the importance of an appropriate description of the effective refractive ind
Externí odkaz:
http://arxiv.org/abs/1705.07634
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