Enhanced and reduced transmission of acoustic waves with bubble meta-screens

TL;DR

This paper introduces bubble-based sonic meta-screens capable of controlling air-borne acoustic waves for soundproofing, transmission enhancement, and absorption, applicable at ultrasonic and audible frequencies.

Contribution

It presents a novel class of sonic meta-screens made of periodic air bubbles, enabling versatile manipulation of acoustic wave transmission and absorption.

Findings

Effective soundproofing capabilities

Enhanced transmission at air/water interfaces

Potential for acoustic absorption applications

Abstract

We present a class of sonic meta-screens for manipulating air-borne acoustic waves at ultrasonic or audible frequencies. Our screens consist of periodic arrangements of air bubbles in water or possibly embedded in a soft elastic matrix. They can be used for soundproofing, but also for exalting transmission at an air/water interface or even to achieve enhanced absorption.