Wave characteristics and anisotropic homogenization theory of soft matters layered structure

Abstract

We investigate in this work the wave characteristics and homogenization theory of soft matter layered structure in the limit of low-frequency P-wave. Using the method of potentials, we derive closed-form dispersion relationship and identify three distinct modes of the soft matter layered structure: quasistatic mode, resonance mode, and slip mode. These modes differ based on their equivalent interface conditions: a continuous interface for quasistatic mode, a spring-like interface for resonance mode, and a slip like interface for slip mode. Additionally, we propose a simplified model capturing P-wave wave characteristics in the S-wave high-frequency regime. Our findings unify wave-structure relationships across solid, liquid, and soft matter composites, offering a predictive framework for engineering metamaterials with programmable wave responses. This study offers new insight on the fundamental understanding of layered media and providing direct design principles for applications in acoustic cloaking, vibration damping, and biomedical imaging.