[Dottorcomp] Informal Seminar - Alice Vanel - 17.11.2023 2pm

[Andrea Moiola]

Dear all,
Just a reminder of tomorrow's informal seminar by Alice Vanel.
Best regards,
Andrea




Il giorno gio 9 nov 2023 alle ore 13:48 Andrea Moiola
<andrea.moiola a unipv.it> ha scritto:
>
> Dear all,
> The next Very Informal Seminar will be given by Alice Vanel (CERN) at 2 PM on Friday 17th November, at the IMATI.
> Title and abstract below.
> Best,
> Andrea, Laura, Lorenzo
> https://sites.google.com/view/very-informal-seminars
>
>
>
> Modal approximation for plasmonic resonators and application to super-localization
>
> We study the electromagnetic field scattered by a metallic nanoparticle with dispersive material parameters in a resonant regime. We consider the particle placed in a homogeneous medium in a low-frequency regime. We define modes for the non-Hermitian problem as perturbations of electro-static modes, and obtain a modal approximation of the scattered field in the frequency domain. The poles of the expansion correspond to the eigenvalues of a singular boundary integral operator and are shown to lie in a bounded region near the origin of the lower-half complex plane. Finally, we show that this modal representation gives a very good approximation of the field in the time domain. We present numerical simulations in two dimensions to corroborate our results. We illustrate the usefulness of our method on the super-localisation of a point-like emitter in a resonant environment.
>
>
> --
> Andrea Moiola
> Dipartimento di Matematica
> Università degli Studi di Pavia - Via Ferrata 5 - 27100 Pavia - Italy
> Tel. +39 0382 985656      ---      andrea.moiola a unipv.it
> http://matematica.unipv.it/moiola/



-- 
Andrea Moiola
Dipartimento di Matematica
Università degli Studi di Pavia - Via Ferrata 5 - 27100 Pavia - Italy
Tel. +39 0382 985656      ---      andrea.moiola a unipv.it
http://matematica.unipv.it/moiola/