We show evidence of extremely low thresholds for subharmonic generation in one-dimensional artificial composites with hierarchical structure, as compared to the corresponding homogeneous and periodic structures. The displacement profiles of the anharmonically coupled normal modes are probed experimentally, indicating that the enhanced non-linear interaction is due to the fact that, for a given fundamental mode, a second mode with much more favourable frequency and spatial matching is found in the hierarchical composite than in the non-fractal structures.

Threshold lowering for subharmonic generation in Cantor-like composite structures / A., Alippi; G., Shkerdin; A., Bettucci; F., Craciun; Molinari, Elisa; A., Petri. - In: PHYSICA. A. - ISSN 0378-4371. - STAMPA. - 191:(1992), pp. 540-544. [10.1016/0378-4371(92)90579-F]

Threshold lowering for subharmonic generation in Cantor-like composite structures

MOLINARI, Elisa;
1992

Abstract

We show evidence of extremely low thresholds for subharmonic generation in one-dimensional artificial composites with hierarchical structure, as compared to the corresponding homogeneous and periodic structures. The displacement profiles of the anharmonically coupled normal modes are probed experimentally, indicating that the enhanced non-linear interaction is due to the fact that, for a given fundamental mode, a second mode with much more favourable frequency and spatial matching is found in the hierarchical composite than in the non-fractal structures.
1992
191
540
544
Threshold lowering for subharmonic generation in Cantor-like composite structures / A., Alippi; G., Shkerdin; A., Bettucci; F., Craciun; Molinari, Elisa; A., Petri. - In: PHYSICA. A. - ISSN 0378-4371. - STAMPA. - 191:(1992), pp. 540-544. [10.1016/0378-4371(92)90579-F]
A., Alippi; G., Shkerdin; A., Bettucci; F., Craciun; Molinari, Elisa; A., Petri
File in questo prodotto:
File Dimensione Formato  
1-s2.0-037843719290579F-main.pdf

Accesso riservato

Tipologia: Versione dell'autore revisionata e accettata per la pubblicazione
Dimensione 303.01 kB
Formato Adobe PDF
303.01 kB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/744334
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 7
  • ???jsp.display-item.citation.isi??? 5
social impact