Multi-Frequency Acoustic Steering in Rationally Pruned Disordered Networks

TL;DR

This paper demonstrates that pruning disordered elastic networks enables multi-frequency acoustic steering, offering a new approach for designing multi-frequency acoustic metamaterials.

Contribution

It introduces a novel method of using network pruning to achieve multi-frequency wave steering in disordered media, advancing metamaterial design.

Findings

Pruning allows multi-frequency acoustic steering.

The method enables targeted wave control at different frequencies.

It provides a new route for designing multi-frequency metamaterials.

Abstract

The frequency of a wave is a crucial parameter to understanding its propagation to a structured medium. While metamaterials can be designed to focus or steer deformations or waves toward a specific location, wave steering toward multiple targeted locations at different frequencies remains challenging. Here we show that pruning of random elastic networks allows realizing such multi-objective, multi-frequency acoustic steering. Our study opens up a viable route to the rational design of multi-frequency acoustic metamaterials.