Results 121 to 130 of about 3,581 (229)

Recent Developments of Acoustic Energy Harvesting: A Review

Micromachines, 2019
Acoustic energy is a type of environmental energy source that can be scavenged and converted into electrical energy for small-scale power applications. In general, incident sound power density is low and structural design for acoustic energy harvesting ...
Ming Yuan, Ziping Cao, Jun Luo, Xiujian Chou   +3 more
doaj   +1 more source

Etch‐Less Nanostructures for Photoluminescence Modification From Plasma‐Enhanced Chemical Vapor Deposition‐Grown Silicon Nanocrystals

Advanced Photonics Research, Volume 7, Issue 8, August 2026.
The luminescence from Si‐nanocrystals embedded in a waveguide layer is strongly modified by a shallow photo resist grating on top, which is fabricated by large area laser interference lithography. Guided mode resonances and quasi bound states in the continuum lead to increased upward coupling of radiation, which are also used to experimentally map the ...
Krishna Koundinya Upadhyayula, Laurids Wardenberg, Vadim Talalaev, Michael Hanke, Alexandra Schrader, Alexander Sprafke, Benjamin Gesemann, Jörg Schilling   +7 more
wiley   +1 more source

Acoustic metamaterial models on the (2+1)D Schwarzschild plane [PDF]

, 2019
[EN] Recent developments in acoustic metamaterial engineering have led to the design and fabrication of devices with formidable properties, such as acoustic cloaking, superlenses and ultra-sound waves.
Weinmüller, Ewa B., Tung, Michael M.; orcid:, Tung, Michael Ming-Sha   +2 more
core   +1 more source

Prediction and optimization of acoustic absorption performance of quasi-Helmholtz acoustic metamaterials based on LightGBM algorithm

AIP Advances
Optimization of acoustic metamaterial structures and prediction of acoustic absorption properties have received much attention in various fields. This thesis aims to optimize and predict the acoustic absorption performance of quasi-Helmholtz acoustic ...
Jianxin Xu, Weikang Mao, Xiaoqian Yu, Bingfei Liu   +3 more
doaj   +1 more source

Deep Learning‐Assisted Design of Mechanical Metamaterials

Advanced Intelligent Discovery, Volume 2, Issue 4, August 2026.
This review examines the role of data‐driven deep learning methodologies in advancing mechanical metamaterial design, focusing on the specific methodologies, applications, challenges, and outlooks of this field. Mechanical metamaterials (MMs), characterized by their extraordinary mechanical behaviors derived from architected microstructures, have ...
Zisheng Zong, Pu Wen, Zhiping Chai, Dunxuan Wu, Han Ding, Zhigang Wu   +5 more
wiley   +1 more source

Ultrasonic Rainbow: A Meta‐Transducer for Frequency‐Selective Elastic Wave Control via Dithering‐Based Wavenumber Tuning

Advanced Intelligent Systems, Volume 8, Issue 8, August 2026.
A piezoelectric meta‐transducer generates an ultrasonic rainbow, steering guided elastic waves to different angles according to frequency. A dithering‐based binary electrode design enables a closer realization of the target wavenumber filter, improving directional purity and suppressing unwanted lobes. Numerical and experimental validation demonstrates
Masoud Mohammadgholiha, Jochen Moll, Kilian Tschöke, Carsten Kruska, Sylvia E. Gebhardt, Luca De Marchi   +5 more
wiley   +1 more source

Aharonov–Bohm Effect for Cooper Pairs in Kerr Spacetime: Gravitomagnetic Phase Shifts From Frame Dragging

Annalen der Physik, Volume 538, Issue 8, August 2026.
ABSTRACT The unification of quantum mechanics and general relativity remains a central problem in fundamental physics. Here, we study the gravitomagnetic Aharonov–Bohm (AB) effect for Cooper pairs in Kerr spacetime. Frame‐dragging by a rotating black hole (BH) generates an effective vector potential through the off‐diagonal metric term gtϕ$g_{t\phi }$,
Erdem Sucu, İzzet Sakallı
wiley   +1 more source

Effect of Foam Faces and Butterfly Auxetic Core on Sandwich Nanoplate Vibration and Buckling

ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, Volume 106, Issue 8, August 2026.
ABSTRACT This research examines the thermomechanical vibration and buckling properties of a three‐layer sandwich nanoplate, which consists of foam face layers and a butterfly‐shaped auxetic core. The formulation is developed based on Hamilton's principle and higher‐order shear deformation theory (HSDT), utilizing an analytical Navier‐type solution to ...
Mustafa Eroğlu, Mehmet Akif Koç, İsmail Esen   +2 more
wiley   +1 more source

Prospects of acoustic metamaterials for acoustic stealth

Zhongguo Jianchuan Yanjiu, 2020
With the gradual realization of low frequency detection and other characteristics of sonar technology, the development of stealth technology is facing great challenges. Acoustic metamaterials are a new type of artificial composite materials with supernormal physical properties,which can suppress the propagation of large wavelength(low frequency ...
XU Weilong, PENG Weicai, ZHANG Junjie, HE Xuesong   +3 more
openaire   +1 more source

3D Wave Dispersion Analysis of Sandwich Plates With GPRL‐Reinforced FGM Face Layers Containing Anti‐Tetrachiral Auxetic Metamaterials

ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, Volume 106, Issue 8, August 2026.
ABSTRACT In this study, the 3D wave dispersion properties of a metamaterial nanoplate with GPRL‐reinforced functionally graded material (FGM) surface layers were investigated using refined sinusoidal shear deformable plate theory (RSSDT) and nonlocal strain gradient theory (NSGT).
Engin Yıldırım
wiley   +1 more source