Results 41 to 50 of about 30,372 (259)
Piezoelectric Film Waveguides for Surface Acoustic Waves [PDF]
Журнал нано- та електронної фізики, 2016 The paper presents results of mathematical modeling of piezoelectric film waveguide structures for surface acoustic waves (SAW). Piezoelectric ZnO film is supposed to be placed on a fused quartz substrate.
M.F. Zhovnir
doaj +1 more source
A Non‐Reciprocal Architected Porous Medium
Advanced Functional Materials, EarlyView.ABSTRACT In several fluid flow, energy‐dumping, and energy‐harvesting applications, a dominant flow direction or dominant resistance direction is desirable. In this study, we propose a simple modular geometry that doubles flow resistance in one direction relative to the opposite direction, while maintaining laminar viscous flow.
Clément Vezies +2 more
wiley +1 more source
Multilayer-graphene-based amplifier of surface acoustic waves
AIP Advances, 2015 The amplification of surface acoustic waves (SAWs) by a multilayer graphene (MLG)-based amplifier is studied. The conductivity of massless carriers (electrons or holes) in graphene in an external drift electric field is calculated using Boltzmann’s ...
Stanislav O. Yurchenko +2 more
doaj +1 more source
Ultrasensitive Anti‐Stokes Luminescence Thermometry in Transition Metal Dichalcogenide Monolayers
Advanced Functional Materials, EarlyView.We demonstrate a highly sensitive nanothermometer using anti‐Stokes photoluminescence, also known as photoluminescence upconversion (UPL), in monolayer tungsten disulfide. A strong resonantly enhanced UPL is observed, confirming the central role of optical phonons in the PL upconversion mechanism.
Sharada Nagarkar +6 more
wiley +1 more source
Advances in Mechanical Engineering, 2019 The actuation technique of a surface acoustic wave motor with nanometer scale linear motion was experimentally investigated in this study. The surface acoustic wave motor comprised a stator made of a Y+128° cut, X-propagation lithium niobate substrate ...
Tai-Ho Yu
doaj +1 more source
Feature Detection of Acoustically Induced Sea Surface Micro-motions with Terahertz Radar
Leida xuebao, 2023 When underwater acoustic signals propagate to the water surface, the acoustic impedance difference between water and air leads to transverse microamplitude waves on the water surface.
Bin DENG +5 more
doaj +1 more source
The 2019 surface acoustic waves roadmap [PDF]
Journal of Physics D: Applied Physics, 2019 Abstract Today, surface acoustic waves (SAWs) and bulk acoustic waves are already two of the very few phononic technologies of industrial relevance and can been found in a myriad of devices employing these nanoscale earthquakes on a chip. Acoustic radio frequency filters, for instance, are integral parts of wireless devices.
Per Delsing +38 more
openaire +10 more sources
3D Printing Innovations in Polymeric Porous and Patterned Architecture
Advanced Functional Materials, EarlyView.Polymeric foams occupy a unique structural space between dense solids and open networks, where engineered void fraction governs mechanical compliance, thermal resistance, and mass transport. Additive manufacturing now enables precise spatial control over cellular architecture, unlocking designer foam structures across applications spanning crash ...
Dhanush Patil +13 more
wiley +1 more source
MathematicsThis paper theoretically investigates the influence of homo- and hetero-junctions on the propagation characteristics of radially propagated cylindrical surface acoustic waves in a piezoelectric semiconductor semi-infinite medium.
Xiao Guo +4 more
doaj +1 more source
The axisymmetric Rayleigh waves in a semi-infinite elastic solid
Theoretical and Applied Mechanics Letters, 2020 : It is well-known that Rayleigh wave, also known as surface acoustic wave (SAW), solutions in semi-infinite solids are plane waves with signatory properties like the distinct velocity and exponentially decaying deformation in the depth.
Ji Wang +6 more
doaj +1 more source