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Periodic strings: A mechanical analogy to photonic and phononic crystals

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Autor(es):
Pitombo, R. S. ; Vasconcellos, M. ; Abrantes, P. P. ; de Melo e Souza, Reinaldo ; Penello, G. M. ; Farina, C.
Número total de Autores: 6
Tipo de documento: Artigo Científico
Fonte: American Journal of Physics; v. 92, n. 2, p. 7-pg., 2024-02-01.
Resumo

We present a theoretical study of a periodic vibrating string composed of a finite sequence of string segments connected periodically, with each segment characterized by a constant linear mass density. The main purpose is to provide a model that can mimic the properties of photonic or phononic crystals. This system displays frequency intervals for which wave propagation is not allowed (frequency bandgaps), in close analogy to photonic and phononic crystals. We discuss the behavior of these bandgaps when varying physical parameters, such as the values of the linear mass densities, the oscillation frequency, and the number of string segments constituting the entire system. (AU)

Processo FAPESP: 21/04861-7 - Interações fotônicas não-lineares mediadas por átomos
Beneficiário:Patrícia Pinto Abrantes
Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
Processo FAPESP: 22/05236-1 - Twistores em super-Yang-Mills e AdS_5xS5
Beneficiário:Rodrigo Schmidt Pitombo
Modalidade de apoio: Bolsas no Brasil - Doutorado Direto