Results 161 to 170 of about 75,524 (303)

Generation of spatiotemporal acoustic vortices with arbitrarily oriented orbital angular momentum. [PDF]

Nat Commun
Liu S, Ge H, Xu XY, Sun Y, Liu XP, Lu MH, Chen YF.   +6 more
europepmc   +1 more source

Dynamic and Reconfigurable Acoustic Fields Enabled by Morphing Fluidic Holographic Lenses

Advanced Materials Technologies, EarlyView.
Real‐time reconfiguration of the acoustic field is achieved using fluidic holographic lenses that dynamically morph their structure via controlled volume changes. This compact, programmable approach eliminates the need for active elements like phased arrays, enabling high‐resolution, adaptive wavefront control with enhanced flexibility for diverse ...
Moustafa Sayed Ahmed, Shima Shahab
wiley   +1 more source

Additively manufactured hybrid auxetic structures for enhanced low frequency acoustic performance through experiments and modelling. [PDF]

Sci Rep
Naveed AB, Mubashar A, Khan MKA, Munir A, Khan KA.   +4 more
europepmc   +1 more source

Additive Manufacturing of Negative Thermal Expansion Metamaterials Using Steels

Advanced Materials Technologies, EarlyView.
Architected lattices with tunable negative thermal expansion are fabricated from common steels using laser powder bed fusion metal additive manufacturing. Optimized multimaterial interfaces and geometry‐driven design produce robust, defect‐minimized structures that remain dimensionally stable up to 300 °C, enabling scalable solutions for thermal ...
Devashish Dubey, Eskandar Fereiduni, Mohamed A. Elbestawi, Mehedi H. Mahfuz, Ryan B. Berke   +4 more
wiley   +1 more source

Numerical simulation of cavitation threshold in water and viscoelastic medium based on bubble cluster dynamics. [PDF]

Ultrason Sonochem
Shen X, Wu P, Lin W.
europepmc   +1 more source

An Ultra‐Sub‐Wavelength Microwave Polarization Switching Antenna for Covert Communication Implemented With Directed Surface Acoustic Waves in an Artificial Multiferroic Magnonic Crystal

Advanced Materials Technologies, EarlyView.
A surface acoustic wave (SAW) launched in a two‐dimensional periodic array of magnetostrctive nanomagnets on a piezoelectric substrate excites spin waves in the nanomagnets which radiate electromagnetic waves in space. The polarization of the emitted beam in particular directions and at particular frequencies can be switched between horizontal and ...
Raisa Fabiha, Erdem Topsakal, Supriyo Bandyopadhyay   +2 more
wiley   +1 more source

Comparing visual and acoustic detectability of two coastal cetacean species off Sindhudurg, India, to better inform integrated survey protocol. [PDF]

Sci Rep
Bopardikar I, Harris DV, Robin VV, Klinck H.   +3 more
europepmc   +1 more source

Acoustic Wavefront Shaping Using Ultrahigh Phase Resolution Metamaterial

Advanced Materials Technologies, EarlyView.
A Bilateral Symmetrical T‐shaped (BST) acoustic metamaterial unit cell capable of achieving a high phase resolution of π/36 radians at 8000 Hz is introduced. The approach enables tunable wavefront control through simple rotational adjustment of BST, which offers an alternative to the conventional complex metamaterials unit cell design and a way for ...
Sourabh Dogra, Shubhi Bansal, Vikramjeet Singh, Sriram Subramanian, Manish K. Tiwari   +4 more
wiley   +1 more source

Full‐Domain 3D Digital Twin for Comprehensive Analysis and Validation of Standing Surface Acoustic Wave Generation on LiNbO3 Substrate

Advanced Materials Technologies, EarlyView.
A full‐domain 3D digital twin of a standing surface acoustic wave (SSAW) device on 128° YX LiNbO3 is developed and experimentally validated. The predictive power of the model is confirmed by electrical characterisation and laser Doppler vibrometry measurements, which show excellent agreement with simulations.
Felice Alberto Sfregola, Annalisa Volpe, Andrea Zifarelli, Massimiliano Benetti, Domenico Cannatà, Vincenzo Spagnolo, Pietro Patimisco   +6 more
wiley   +1 more source

Achieving High-Performance Transcranial Ultrasound Transmission Through Mie and Fano Resonance in Flexible Metamaterials. [PDF]

Adv Sci (Weinh)
Chen J, Liu B, Peng G, Zhou L, Tan C, Qin J, Li J, Hong Z, Wu Y, Lu M, Cai F, Huang Y.   +11 more
europepmc   +1 more source