https://doi.org/10.1140/epjd/s10053-025-01104-9
Regular Article - Atoms, Molecules, Ions, and Clusters
Electric potential in cylindrical nanocavities induced by time-dependent charge distributions
1
Instituto de Física Enrique Gaviola, CONICET and FAMAF, Universidad Nacional de Córdoba, Medina Allende s/n, Ciudad Universitaria, 5000, Córdoba, Argentina
2
Centro Atómico Bariloche, Comisión Nacional de Energía Atómica, Av. Bustillo 9500, 8400, San Carlos de Bariloche, Río Negro, Argentina
3
Departamento de Electrónica, Universidad Politécnica de Cartagena, Pza. del Hospital 1, 30202, Cartagena, Spain
Received:
17
July
2025
Accepted:
25
November
2025
Published online:
14
December
2025
The purpose of this work is to investigate the interaction of time-dependent external electric sources with the electronic modes induced in a cylindrical cavity of nanoscopic dimensions. We use the hydrodynamic model to describe the dielectric properties of the material, and solve the Poisson equation to obtain the induced fields inside the cavity. We consider different configurations of the external electric sources (point charge, extended charge distribution and electric dipole), with two types of time dependency: exponential pulse and harmonic oscillations. We analyze the enhancement of the field intensity in terms of the different relevant physical parameters, such as the cavity radius and the oscillation frequency.
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© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
