Results 21 to 30 of about 1,246,575 (309)
Acoustic properties of La3Ga5.3Ta0.5Al0.2O14 crystal
Modern Electronic Materials, 2015 Development and search for new advanced materials of the lanthanum gallium silicate group with unique thermal properties is of great importance for the development of acoustoelectronics based on volume and surface acoustic waves. The processes of surface
Dmitry V. Roshchupkin +4 more
doaj +1 more source
水下无人系统学报, 2023 Considering the difficulty in estimating the acoustic source motion velocity using an interference striation pattern of a broadband continuum spectrum in a low-frequency analysis and recording(LOFAR) spectrum at a low signal-to-noise ratio(SNR), a moving
Yuan YAO +3 more
doaj +1 more source
Sensors, 2017 An acoustic spectroscopic approach to detect contents within different packaging, with substantially wider applicability than other currently available subsurface spectroscopies, is presented.
Javier Moros +2 more
doaj +1 more source
Determination of acoustic phonon anharmonicities via second-order Raman scattering in CuI
New Journal of Physics, 2023 We demonstrate the determination of anharmonic acoustic phonon properties via second-order Raman scattering exemplarily on copper iodide single crystals.
R Hildebrandt +7 more
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Energy-Dynamics Resulting in Turbulent and Acoustic Phenomena in an Underexpanded Jet
Aerospace, 2018 Underexpanded jets exhibit interactions between turbulent shear layers and shock-cell trains that yield complex phenomena that are absent in the more commonly studied perfectly expanded jets.
Unnikrishnan Sasidharan Nair +2 more
doaj +1 more source
Number of observable features in the acoustic Raman spectra of nanocrystals [PDF]
Physical Review B, 2012 Low-frequency Raman scattering spectra are presented for gold nanocrystals with diameters 3.5 and 13 nm. The frequencies of the Raman peaks but also their number are shown to vary with the nanocrystal size. These results are analyzed using both the continuous elastic medium approximation and an atomistic approach.
Saviot, Lucien +2 more
openaire +3 more sources
Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source
Cumhuriyet Science Journal, 2022 Dispersion profiles and surface acoustic wave attenuation characteristics of ring-shaped phononic crystals are investigated as a function of the core pillar height. Finite element method simulations are carried out for both band analyses and transmission
Furkan Kuruoğlu
doaj +1 more source
Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying
Advanced Engineering Materials, EarlyView.An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara +8 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.Enhancing ultrasound transmission through an aberration layer exhibiting mismatched impedance with the surrounding medium possesses great implications in imaging and treatment. In this study, we show that a space‐coiling acoustic metamaterial with judiciously tailored structural profile can help improve impedance matching.
Maral Ghanami +4 more
wiley +1 more source