2021/10/22 by Nitish Kumar, Kumar, Nitish, Siladitya Pal +1
Engineering · Materials Science · Neuroscience · #Acoustic Wave Phenomena Research #Applied Physics (physics.app-ph) #FOS: Physical sciences #Hearing Loss and Rehabilitation #Metamaterials and Metasurfaces Applications
paper · pdf · doi:10.48550/arxiv.2110.11690
openalex publication_date 2021/10/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Accomplishing a wide elastic wave bandgap with single phase constituent is of primary interest in developing phononic metamaterials. In the present article, exploiting spatial periodicity, a single phase lattice is configured towards achieving a large frequency bandgap in sonic range. Numerical simulations reveal the presence of a comprehensive bandgap of 18 kHz in the 2 to 22 kHz range with systematically localizing the same constituent material in the lattice. Bloch wave modes unravel the involvement of dipole, monopole, and quadrupole resonances for wide and connected bandgaps. The existence of salient bandgaps is experimentally validated by analyzing the mechanical wave transmission.