Results 81 to 90 of about 16,946 (263)

Finite-element analysis of scattering parameters of surface acoustic wave bandpass filter formed on barium titanate thin film

open access: yesInternational Journal of Smart and Nano Materials, 2018
The frequency dependence of scattering parameters of interdigital surface acoustic wave transducers placed on ferroelectric barium titanate (BaTiO3) epitaxial film in c-phase coated over magnesium oxide has been studied using the finite-element method ...
Pavel E. Timoshenko   +2 more
doaj   +1 more source

A novel drifter designed for use with a mounted Acoustic Doppler Current Profiler in shallow environments

open access: yes, 2013
We present a novel design for a surface drifter, mounted with a pulse-coherent Acoustic Doppler Current Profiler (ADCP) for measuring near-surface (depths 0.18-1 m) flows.
Mullarney, Julia C.   +1 more
core   +1 more source

On the Reflection of Acoustic Waves on a Rough Surface [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1958
There is no abstract available for this article.
openaire   +2 more sources

Acoustic Surface-Wave Recirculating Memory

open access: yesIEEE Transactions on Sonics and Ultrasonics, 1972
An acoustic-surface-wave memory is described, operating at a bit rate of 220 MHz and storage capacity of 1280 bit per recirculation loop. The transducers are coded using orthogonal pairs of Golay complementary sequences to obtain pulse-in pulse-out behaviour.
H. van de Vaart, L.R. Schissler
openaire   +1 more source

Switchable Magnonic Crystals Based on Spin Crossover/CrSBr Heterostructures

open access: yesAdvanced Materials, EarlyView.
Multiscale modeling is employed to investigate the functionality of a light‐controlled, tunable magnonic crystal based on spin‐crossover Fe‐pz molecules integrated with a monolayer of CrSBr. Ab initio simulations confirm that the molecules remain functional on the CrSBr surface, while a semiclassical elastic model demonstrates that light‐induced ...
Andrei Shumilin   +4 more
wiley   +1 more source

Novel surface-acoustic wave transducers

open access: yesArchives of Acoustics, 2014
The conventional means of launching a Surface Acoustic Wave on a piezoelectric substrate is by using an inter-digital transducer. A modified structure using multilayer deposition, but only a single critical photolithography stage, is proposed in this ...
R. C. WOODS
doaj  

Analysis of measurement uncertainty of a surface acoustic wave micro-pressure sensor

open access: yesMeasurement + Control, 2019
As an important support for test and control projects, sensor’s performance is directly related to the accuracy of the measurement. To fully analyze the sources of measurement uncertainty for a surface acoustic wave micro-pressure sensor, in this study ...
Jian Huang   +3 more
doaj   +1 more source

High‐Performance Transparent, Deformable, and Recoverable Biomimetic Stevia–PVA Hydrogel Triboelectric Nanogenerator with Machine Learning‐Assisted Motion Recognition

open access: yesAdvanced Materials, EarlyView.
A transparent, deformable stevia–PVA hydrogel triboelectric nanogenerator delivers significantly enhanced mechanical strength and electrical output through biomimetic hydrogen‐bonded networks. Coupled with machine learning–assisted signal recognition, the self‐powered hydrogel enables accurate human‐motion sensing for intelligent wearable and IoT ...
Thien Trung Luu   +5 more
wiley   +1 more source

Investigation of two-dimensional acoustic resonant modes in a particle separator

open access: yes, 2006
Within an acoustic standing wave particles experience acoustic radiation forces, a phenomenon which is exploited in particle or cell manipulation devices.
Hill, M.   +3 more
core   +1 more source

Advances in Magnesium‐Based Thermoelectrics: A Critical Review

open access: yesAdvanced Materials, EarlyView.
Magnesium‐based thermoelectric materials have emerged as promising candidates for low‐to‐mid‐temperature energy conversion due to their abundance, low cost, and competitive performance. This review summarizes recent advances in Mg3X2, MgAgSb, and Mg2X systems, covering transport mechanisms, fabrication strategies, stability challenges, and device ...
Li‐Min Zhang   +5 more
wiley   +1 more source

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