Polarization-independent full mode-converting elastic metasurfaces

W Lee, J Lee, CI Park, YY Kim - International Journal of Mechanical …, 2024 - Elsevier
This investigation proposes a novel elastic metasurface tailored to convert a longitudinal
wave into a transverse wave and vice versa at an arbitrary refraction angle with full (100%) …

Perfect circular polarization of elastic waves in solid media

J Lee, MJ Kweun, W Lee, HM Seung, YY Kim - Nature Communications, 2024 - nature.com
Elastic waves involving mechanical particle motions of solid media can couple volumetric
and shear deformations, making their manipulation more difficult than electromagnetic …

[HTML][HTML] Enhancement of piezoelectric energy harvesting for flexural waves by a metasurface-assisted phononic cavity

K Wang, XS Li, L Cao, P Guo, G Fan, J Qin, TX Ma - Results in Physics, 2024 - Elsevier
Piezoelectric energy harvesting of mechanical waves exhibits great potential applications in
electricity generation for low-powered electronic devices. In this work, the metasurface …

Mode-entangled resonance for lamb waves in a plate

SH Kim, KY Kim, HJ Lee, YY Kim - International Journal of Mechanical …, 2024 - Elsevier
We report a novel resonance phenomenon called the mode-entangled resonance. It can
occur at a specific frequency in a plate carrying both symmetric and antisymmetric Lamb …

The blossoming of Ultrasonic Meta-Transducers

L De Marchi - IEEE Transactions on Ultrasonics, Ferroelectrics …, 2024 - ieeexplore.ieee.org
Key requirements to boost the applicability of Ultrasonic systems for in-situ, real-time
operations are low hardware complexity and low power consumption. These features are …

Active elastic metamaterials with equidistant solely resonant bandgaps

HB Al Ba'ba'a - Mechanics Research Communications, 2024 - Elsevier
Elastic metamaterials are man-made structures with properties that transcend naturally
occurring materials. One predominant feature of elastic metamaterials is locally resonant …

[HTML][HTML] Tunable bandpass filters using a defective phononic crystal shunted to synthetic negative capacitance for longitudinal waves

SH Jo, M Park, M Kim, J Yang - Journal of Applied Physics, 2024 - pubs.aip.org
This study illustrates the successful achievement of tunable defect bands in one-
dimensional defective phononic crystals (PnCs) through the incorporation of piezoelectric …

High strength induced wide band gap formations in additively manufactured cubic metamaterial

JC Guo, JR Li, HY Wang, ZY Dong… - Smart Materials and …, 2024 - iopscience.iop.org
Strength and band gap are the two basic physical features of the cubic metamaterial. How to
design band gap characteristics with high strength of structure is the key for the further …

A metasurface for suppressing mode conversion and achieving directional reflection of shear horizontal wave

M Fu, Q Zhu, H Miao - Journal of Physics D: Applied Physics, 2024 - iopscience.iop.org
The lowest-order shear horizontal (SH 0) guided wave in a plate is crucial for nondestructive
testing and structural health monitoring due to its nondispersive nature. However, mode …

Design and analysis of three-dimensional chiral metamaterials for enhanced torsional compliance

M Ji, Y Cho, SJ Lee, K Park - Smart Materials and Structures, 2024 - iopscience.iop.org
Abstract Three-dimensional (3D) chiral structures are a subset of mechanical metamaterials
known for their distinctive deformation characteristics, including the presence of auxetic and …