Vibration Resonance and Dynamic Characteristics of Pillared Phononic Crystals and Acoustic Metamaterials

Engineered resonance phenomenon on surfaces have created an unprecedented world of surface science and technology. Branching resonant substructure as pillared phononic crystals and metamaterials emerge as a new class of synthetic structures with peculiar wave dispersion and dynamic properties that cannot be observed in natural materials. A fundamental property of interest includes dual behavior of pillared system that means exhibition of both Bragg and hybridization bandgaps. The rich resonance properties by this simple structure frontier a whole new research field in phononic crystals and metamaterials. The purpose of this article is to reproduce and combine different surface resonance phenomena reported in the literature on pillared structures with an insight on historical context, recent developments and future research prospects. The collection of findings reported here may provide a comprehensive insight on pillared resonances and help resolve the current challenges in the field to foster research spin-offs.