[HTML][HTML] Observation of maxon-like ultrasound in elastic metabeam

P Zhang, Y Liu, K Zhang, Y Wu, F Chen, Y Chen… - APL Materials, 2024 - pubs.aip.org
We observe maxon-like dispersion of ultrasonic guided waves in elastic metamaterials
consisting of a rectangular beam and an array of cylindrical resonators. The pillars act as …

[HTML][HTML] Evidence of zero group velocity at the lowest dispersion branch through local interactions

MM Samak, OR Bilal - APL Materials, 2024 - pubs.aip.org
Zero group velocity (ZGV) modes can be utilized in many applications in both optics and
acoustics. There exist numerous realizations of metamaterials with ZGVs at higher …

[HTML][HTML] Enhanced dam** and bandwidth in roton-like dispersion of a beyond nearest neighbor periodic chain

A Banerjee, KK Bera, S Adhikari - Physics Letters A, 2024 - Elsevier
This paper investigates the intriguing roton-like phenomenon occurring in systems with non-
local interactions, wherein a single dispersion curve exhibits positive and negative group …

The role of frequency and impedance contrasts in bandgap closing and formation patterns of axially-vibrating phononic crystals

M Nouh - Journal of Applied Mechanics, 2024 - asmedigitalcollection.asme.org
Bandgaps, or frequency ranges of forbidden wave propagation, are a hallmark of phononic
crystals (PnCs). Unlike their lattice counterparts, PnCs taking the form of continuous …

Local-to-non-local transition laws for stiffness-tuneable monoatomic chains preserving springs mass

F Guarracino, M Fraldi… - Philosophical …, 2024 - royalsocietypublishing.org
Recently, non-local configurations have been proposed by adding beyond nearest
neighbour couplings among elements in lattices to obtain roton-like dispersion relations and …

Closed Form Solutions for Wave Propagation in Hexagonal Diatomic Non-Local Mass-Spring Systems

F Ongaro, P Beoletto, F Bosia, M Miniaci… - Available at SSRN … - papers.ssrn.com
Periodic mass-spring lattices are commonly used to investigate and exemplify the
propagation of waves in elastic systems, including wave localisation and topological …