Soft Porous Silicone Rubbers as Key Elements for the Realization of Acoustic Metamaterials
Langue
en
Article de revue
Ce document a été publié dans
Langmuir. 2015-02-12, vol. 31, p. pp. 3215-3221
American Chemical Society
Résumé en anglais
In this work, macroporous materials made of polydimethylsiloxane, a soft silicone rubber, are prepared using UV polymerization with an emulsion-templating procedure. The porosity of the final materials can be precisely ...Lire la suite >
In this work, macroporous materials made of polydimethylsiloxane, a soft silicone rubber, are prepared using UV polymerization with an emulsion-templating procedure. The porosity of the final materials can be precisely controlledby adjusting the volume of the dispersed phase. We show that the porous structure of the materials is the template of thedroplets of the initial emulsions. Mechanical tests show that the materials Young’s moduli decrease with the porosity of thematerials. Acoustic measurements indicate that, in such a porous elastomeric matrix, the sound speed also decreasesdramatically as soon as the porosity increases to attain values of as low as 80 m/s......< Réduire
Mots clés en anglais
Acoustic Metamaterials
Macroporous materials
Projet Européen
Aerospace Research and Development
Metakoustik
Metakoustik
Project ANR
Advanced Materials by Design - ANR-10-LABX-0042
Initiative d'excellence de l'Université de Bordeaux - ANR-10-IDEX-0003
Initiative d'excellence de l'Université de Bordeaux - ANR-10-IDEX-0003
Origine
Importé de halUnités de recherche