Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1103/physrevb.45.6148 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Chip-Based Optoacoustic Single-Cell Detection in Flow Using Point-Source Optimized Surface Acoustic Wave Transducers.
ACS Appl Mater Interfaces
March 2025
Institute of Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Bavaria 85764, Germany.
Sensitive measurement of the optoacoustic (OA, also photoacoustic) properties of cells in flow is highly desirable, as it provides information about the optical absorption properties of cellular compounds. Hence, optoacoustic spectral characteristics can deliver information about the cell state or disease parameters, but can also be used for high-throughput cell sorting by intrinsic properties without additional fluorescence labeling. The current implementation of optoacoustic measurements of cells in a microfluidic context typically relies on piezoelectric (ultrasound) transducers attached to the microfluidic chip, whereby the transducer records the ultrasound signal originating from absorbing species in cells when excited by laser pulses.
View Article and Find Full Text PDFAcoustic impedance-based surface acoustic wave chip for gas leak detection and respiratory monitoring.
Commun Eng
February 2025
State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing, P. R. China.
Acoustic impedance enables many interesting acoustic applications. However, acoustic impedance for gas sensing is rare and difficult. Here we introduce a micro-nano surface acoustic wave (SAW) chip based on the acoustic impedance effect to achieve ultra-fast and wide-range gas sensing.
View Article and Find Full Text PDFInterface Acoustic Waves in 128° YX-LiNbO/SU-8/Overcoat Structures.
Micromachines (Basel)
January 2025
Department of Astronautical, Electrical and Energy Engineering, University of Rome "La Sapienza", Via Eudossiana 18, 00184 Rome, Italy.
The propagation of interface acoustic waves (IAWs) in 128° YX-LiNbO/SU-8/overcoat structures was theoretically studied and experimentally investigated for different types of overcoat materials and thicknesses of the SU-8 adhesive layer. Three-dimensional finite element method analysis was performed using Comsol Multiphysics software to design an optimized multilayer configuration able to achieve an efficient guiding effect of the IAW at the LiNbO/overcoat interface. Numerical analysis results showed the following: (i) an overcoat faster than the piezoelectric half-space ensures that the wave propagation is confined mainly close to the surface of the LiNbO, although with minimal scattering in the overcoat; (ii) the presence of the SU-8, in addition to performing the essential function of an adhesive layer, can also promote the trapping of the acoustic energy toward the surface of the piezoelectric substrate; and (iii) the electromechanical coupling efficiency of the IAW is very close to that of the surface acoustic wave (SAW) along the bare LiNbO half-space.
View Article and Find Full Text PDFAcoustoelectric Effect due to an In-Depth Inhomogeneous Conductivity Change in ZnO/Fused Silica Substrates.
Sensors (Basel)
October 2024
Research Center in Industrial Technologies CRTI, P.O. Box 64 Cheraga, Algiers 16014, Algeria.
The acoustoelectric (AE) effect induced by the absorption of ultraviolet (UV) light at 365 nm in piezoelectric ZnO films was theoretically and experimentally studied. c-ZnO films 4.0 µm thick were grown by the RF reactive magnetron sputtering technique onto fused silica substrates at 200 °C.
View Article and Find Full Text PDFNonreciprocal magnetoacoustic waves with out-of-plane phononic angular momenta.
Sci Adv
July 2024
Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan.
Article Synopsis
- Surface acoustic waves (SAW) can transmit phononic angular momentum, offering a potential method for energy-efficient magnetism control.
- The study investigates SAW-induced magnetoacoustic waves and spin pumping in nickel-based films on lithium niobate, revealing how crystal inversion asymmetry creates circularly polarized phonons with significant out-of-plane angular momentum.
- Results indicate that up to 60% of SAW power is nonreciprocally affected by the out-of-plane magnetization, highlighting the connection between phononic angular momentum and crystal structure, while suggesting new methods for manipulating spin currents with circularly polarized phonons.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!