Results 111 to 120 of about 24,432 (273)

Versatile Standing Wave Generation Between Arbitrarily Oriented Surfaces Using Acoustic Metasurface Deflectors and Retroreflectors

open access: yesAdvanced Intelligent Systems, Volume 7, Issue 3, March 2025.
A novel method for generating versatile standing wave fields using an acoustic metasurface deflector and retroreflector is introduced. By overcoming traditional constraints of parallel surfaces, the approach enables customizable wave patterns and enhances applications in particle manipulation.
Chadi Ellouzi   +4 more
wiley   +1 more source

Ultrasonic Rainbow: A Meta‐Transducer for Frequency‐Selective Elastic Wave Control via Dithering‐Based Wavenumber Tuning

open access: yesAdvanced Intelligent Systems, EarlyView.
A piezoelectric meta‐transducer generates an ultrasonic rainbow, steering guided elastic waves to different angles according to frequency. A dithering‐based binary electrode design enables a closer realization of the target wavenumber filter, improving directional purity and suppressing unwanted lobes. Numerical and experimental validation demonstrates
Masoud Mohammadgholiha   +5 more
wiley   +1 more source

Recent Advance for PVDF Based Flexible Piezoelectric Sensors

open access: yesEcoEnergy, EarlyView.
This review focus on the structural regulation of PVDF via boundary confinement, blending regulation, electric‐field‐assisted orientation, and chemical modification for flexible piezoelectric sensors. ABSTRACT The rapid advancement of flexible electronics, wearable devices, and biomedical engineering has spurred increasing demand for sensor materials ...
Chaoran Tan   +4 more
wiley   +1 more source

Properties of RF-Sputtered PZT Thin Films with Ti/Pt Electrodes

open access: yesInternational Journal of Polymer Science, 2014
Effect of annealing temperature and thin film thickness on properties of Pb(Zr0.53Ti0.47)O3 (PZT) thin film deposited via radiofrequency magnetron sputtering technique onto Pt/Ti/SiO2/Si substrate was investigated.
Cui Yan   +5 more
doaj   +1 more source

A Flexible Poling‐Free Piezoelectric Energy Harvester Based on Gradient Ti‐Doped BiFeO3 Films

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A self‐aligned polarization is realized in compositional gradient Ti‐doped BiFeO3 films via the formation of defect dipoles and strain gradient. The self‐poling behavior is robust to resist high electric field and elevated temperature. The fabricated poling‐free piezoelectric energy harvester delivers output comparable to the poled ones.
Wentao Yang   +8 more
wiley   +1 more source

Defect enhanced optic and electro-optic properties of lead zirconate titanate thin films

open access: yesAIP Advances, 2011
Pb(Zr1-xTix)O3 (PZT) thin films near phase morphotropic phase boundary were deposited on (Pb0.86La0.14)TiO3-coated glass by radio frequency sputtering. A retrieved analysis shows that the lattice parameters of the as-grown PZT thin films were similar to ...
M. M. Zhu, Z. H. Du, J. Ma
doaj   +1 more source

Electromechanical behavior of PZT thin film composites for RF-MEMS

open access: yes, 2009
Made available in DSpace on 2010-01-06T16:41:50Z (GMT). No. of bitstreams: 3 license.txt: 4071 bytes, checksum: e75615bc0da3d84c9388e446b2f8f791 (MD5) Yagnamurthy_Sivakumar.pdf: 7086653 bytes, checksum: 811d92a8497f2ba0a1e4f56aceee8970 (MD5 ...
Yagnamurthy, Sivakumar N.
core  

Light‐Modulated Exchange Bias in Multiferroic Heterostructures

open access: yesElectron, EarlyView.
In this article, exchange bias and magnetization are modulated with visible light at room temperature in PMN‐PZT/FeGa/IrMn multiferroic heterostructures. Photostrictive effect is the main mechanism leading to the modulation of magnetic anisotropy and interfacial exchange bias coupling between the ferromagnetic and antiferromagnetic layers.
Huan Tan   +9 more
wiley   +1 more source

Experimental investigation into the effect of substrate clamping on the piezoelectric behaviour of thick-film PZT elements

open access: yes, 2004
This paper details an experimental investigation of the clamping effect associated with thick-film piezoelectric elements printed on a substrate. The clamping effect reduces the measured piezoelectric coefficient, d33, of the film.
Torah, R N, Beeby, S P, White, N M
core  

Thick film, acoustic emission sensors for embedded structural health monitoring systems [PDF]

open access: yes, 2010
Structural heath monitoring of engineering structures is of growing interest due to increasedcomplexity of such structures and the ability to schedule maintenance when it is needed thuspreventing unnecessary work or preventing failure. One such method
Mba, David   +5 more
core  

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