Zobrazeno 1 - 10
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pro vyhledávání: '"A. Chesnel"'
We consider the scattering of waves by a penetrable inclusion embedded in some reference medium. We exhibit examples of materials and geometries for which non-scattering frequencies exist, i.e., for which at some frequencies there are incident fields
Externí odkaz:
http://arxiv.org/abs/2406.17527
Autor:
Chesnel, Lucas, Nazarov, Sergei A.
We are interested in the lower part of the spectrum of the Dirichlet Laplacian $A^\varepsilon$ in a thin waveguide $\Pi^\varepsilon$ obtained by repeating periodically a pattern, itself constructed by scaling an inner field geometry $\Omega$ by a sma
Externí odkaz:
http://arxiv.org/abs/2401.00439
Autor:
Chesnel, Lucas, Bourgeois, Laurent
We consider a Laplace type problem with a generalized impedance boundary condition of the form $\partial_\nu u=-\partial_x(g\partial_xu)$ on a flat part $\Gamma$ of the boundary. Here $\nu$ is the outward unit normal vector to $\partial\Omega$, $g$ i
Externí odkaz:
http://arxiv.org/abs/2309.13350
Autor:
Rackham, Johnathon, Pratt, Brittni, Griner, Dalton, Smith, Dallin, Cai, Yanping, Harrison, Roger G., Reid, Alex, Kortright, Jeffrey, Transtrum, Mark K., Chesnel, Karine
We report nanoscale inter-particle magnetic orderings in self-assemblies of Fe3O4 nanoparticles (NPs), and the emergence of inter-particle antiferromagnetic (AF) (super-antiferromagnetic) correlations near the coercive field at low temperature. The m
Externí odkaz:
http://arxiv.org/abs/2306.11994
We study a transmission problem for the time harmonic Maxwell's equations between a classical positive material and a so-called negative index material in which both the permittivity $\varepsilon$ and the permeability $\mu$ take negative values. Addi
Externí odkaz:
http://arxiv.org/abs/2305.01982
We investigate the spectrum of a Laplace operator with mixed boundary conditions in an unbounded chamfered quarter of layer. This problem arises in the study of the spectrum of the Dirichlet Laplacian in thick polyhedral domains having some symmetrie
Externí odkaz:
http://arxiv.org/abs/2303.15345
Optimizing magnetic thin films for nanotechnologies often requires imaging nanoscale magnetic domain patterns via magnetic microscopy. The finite size of the image may however significantly affect the characterization of the observed magnetic states.
Externí odkaz:
http://arxiv.org/abs/2301.12668
Autor:
Chesnel, Lucas, Nazarov, Sergei A.
We give a description of the lower part of the spectrum of the Dirichlet Laplacian in an unbounded 3D periodic lattice made of thin bars (of width $\varepsilon\ll1$) which have a square cross section. This spectrum coincides with the union of segment
Externí odkaz:
http://arxiv.org/abs/2301.05930
We consider the propagation of acoustic waves in a waveguide containing a penetrable dissipative inclusion. We prove that as soon as the dissipation, characterized by some coefficient $\eta$, is non zero, the scattering solutions are uniquely defined
Externí odkaz:
http://arxiv.org/abs/2207.00279
Autor:
Acton, Susan, O’Donnell, Michelle M., Periyasamy, Kalaichitra, Dixit, Bharat, Eishingdrelo, Haifeng, Hill, Colin, Paul Ross, R., Chesnel, Laurent
Publikováno v:
In Brain Behavior and Immunity October 2024 121:384-402
