Tailoring structure‐borne sound through bandgap engineering in phononic crystals and metamaterials: a comprehensive review

M Oudich, NJRK Gerard, Y Deng… - Advanced Functional …, 2023 - Wiley Online Library
In solid state physics, a bandgap (BG) refers to a range of energies where no electronic
states can exist. This concept was extended to classical waves, spawning the entire fields of …

Elastic metamaterials for guided waves: from fundamentals to applications

J Lee, YY Kim - Smart Materials and Structures, 2023 - iopscience.iop.org
Guided waves, elastic waves propagating through bounded structures, play a pivotal role in
various applications, including ultrasonic non-destructive testing and structural health …

Multiband elastic wave energy localization for highly amplified piezoelectric energy harvesting using trampoline metamaterials

G Lee, J Park, W Choi, B Ji, M Kim, J Rho - Mechanical Systems and Signal …, 2023 - Elsevier
In this study, we investigate high-performance piezoelectric energy harvesting at multiband
frequencies. Previous harvesting platforms were limited to a high-frequency range and …

Nonlinear dynamical performance of microsize piezoelectric bridge-type energy harvesters based upon strain gradient-based meshless collocation approach

R Alshenawy, S Sahmani, B Safaei… - … Analysis with Boundary …, 2023 - Elsevier
In the current exploration, the size-dependent nonlinear dynamical performance of
piezoelectric bridge-type energy harvesters at microscale is analyzed. The proposed …

Surface stress effect on nonlinear dynamical performance of nanobeam-type piezoelectric energy harvesters via meshless collocation technique

R Alshenawy, S Sahmani, B Safaei… - … Analysis with Boundary …, 2023 - Elsevier
The chief point of the present study is to analyze numerically the surface stress effects on the
nonlinear dynamic performance of nanosized lightweight piezoelectric bridge-type energy …

Shell buckling for programmable metafluids

A Djellouli, B Van Raemdonck, Y Wang, Y Yang… - Nature, 2024 - nature.com
The pursuit of materials with enhanced functionality has led to the emergence of
metamaterials—artificially engineered materials whose properties are determined by their …

Machine learning-enabled development of high performance gradient-index phononic crystals for energy focusing and harvesting

S Lee, W Choi, JW Park, DS Kim, S Nahm, W Jeon… - Nano Energy, 2022 - Elsevier
Gradient-index (GRIN) phononic crystals (PnCs) offer an excellent platform for various
applications, including energy harvesting via wave focusing. Despite its versatile wave …

Engineering metalenses for planar optics and acoustics

B Oh, K Kim, D Lee, J Rho - Materials Today Physics, 2023 - Elsevier
Metalens, a two-dimensional planar system composed of strategically engineered
subwavelength structures, facilitates precise manipulation in the process of both light and …

Wave manipulation in intelligent metamaterials: recent progress and prospects

B Wu, W Jiang, J Jiang, Z Zhao, Y Tang… - Advanced Functional …, 2024 - Wiley Online Library
Metamaterials (MMs), which include phononic crystals (PCs) as a particular type, exhibit
anomalous wave propagation properties through artificial design of topologies or lattice …

Locally resonant porous phononic crystal sensor for heavy metals detection: A new approach of highly sensitive liquid sensors

ZA Alrowaili, M Aouassa, MH Mahmoud… - Journal of Molecular …, 2023 - Elsevier
In this research, a novel and highly sensitive phononic crystal (PnC) sensor is presented for
the detection of CdBr 2 concentrations at a low scale (ppm) which is considered a highly …