Diatom frustule-inspired elastic metamaterials

Gazzola, Chiara; Fonseca Dal Poggetto, Vinicius; Zhou, Xin; Miniaci, Marco

Type de document :

Communication dans un congrès avec actes

DOI :

10.3397/IN_2024_4232

URL permanente :

http://hdl.handle.net/20.500.12210/120013

Titre :

Diatom frustule-inspired elastic metamaterials

Auteur(s) :

Gazzola, Chiara [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Fonseca Dal Poggetto, Vinicius [Auteur]
Zhou, Xin [Auteur]

Physique - IEMN [PHYSIQUE - IEMN]
Miniaci, Marco [Auteur]
JUNIA [JUNIA]
Acoustique - IEMN [ACOUSTIQUE - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]

Titre de la manifestation scientifique :

53rd International Congress and Exposition on Noise Control Engineering, INTER-NOISE24

Ville :

Nantes

Pays :

France

Date de début de la manifestation scientifique :

2024-08-25

Date de publication :

2024-10-04

Discipline(s) HAL :

Physique [physics]
Sciences de l'ingénieur [physics]

Résumé en anglais : [en]

Although a universally accepted definition of elastic metamaterials does not exist yet, the latter are often associated to man-made or artificially engineered media possessing properties typically not available in Nature. ...
Lire la suite >Although a universally accepted definition of elastic metamaterials does not exist yet, the latter are often associated to man-made or artificially engineered media possessing properties typically not available in Nature. Pioneering studies have recently demonstrated that complex structural organizations, often arranged in a periodic and/or gradient manner and spanning multiple length scales, typically found in many biological systems, exhibit extraordinary absorption/reflection functionalities enhanced by local resonances or Bragg scattering mechanisms. This has opened the road to new designs of bio-inspired metamaterial. In this context, here we investigate the elastic dynamic response of diatom frustules, i.e., the exoskeleton structures of photosynthetic algae ubiquitously present throughout the planet in water environments. Firstly, we analyse and record their structural arrangement in nano- and micro- scales by using the Scanning Electro Microscopy (SEM) and the optical profilometer. The results of the analysis are transferred to the metamaterial design. Secondly, through numerical models, we show the possibility of certain frustule-inspired geometries to behave as frequency selective elastic filters thanks to the presence of elastic bandgaps. The work herein contributes to the perspective of elastic metamaterials inspired by Nature.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL

Date de dépôt :

2025-01-23T09:16:10Z

Diatom frustule-inspired elastic metamaterials BibTeX CSV Excel RIS

Diatom frustule-inspired elastic metamaterials

BibTeX

CSV

Excel

RIS