Absorption of scalar waves in correlated disordered media and its maximization using stealth hyperuniformity

Abstract

We develop a multiple-scattering theory for the absorption of waves in disordered media. Based on a general expression of the average absorbed power, we discuss the possibility of maximizing absorption by using structural correlations of disorder as a degree of freedom. In a model system made of absorbing scatterers in a transparent background, we show that a stealth hyperuniform distribution of the scatterers allows the average absorbed power to reach its maximum value. This study provides a theoretical framework for the design of efficient nonresonant absorbers made of dilute disordered materials, for broadband and omnidirectional light, and other kinds of waves.

Topics & Concepts