Results 61 to 70 of about 5,747,059 (288)

Flextensional ultrasonic motor using the contour mode of a square piezoelectric plate [PDF]

, 2004
This paper presents the design, fabrication, and characterization of a new type of standing wave piezoelectric ultrasonic motor. The motor uses a metallic flextensional amplifier, or cymbal, to convert the contour mode vibrations of a square ...
Leinvuo, J T, Wilson, Stephen, Leinvuo, Joni T., Wilson, Stephen A., Whatmore, Roger W., Whatmore, R W   +5 more
core   +1 more source

Strong Lead‐Free Bioinspired Piezoceramics for Durable Energy Transducers

Advanced Functional Materials, EarlyView.
We fabricated brick‐and‐mortar lead‐free piezoceramics with Bi0.5Na0.5TiO3 monocrystal platelets as bricks and amorphous silica as mortar. The alignment of the bricks and the presence of the amorphous silica led to anisotropic residual stresses. These residual stresses increase the samples toughness, strength and durability while the brick alignment ...
Ruxue Yang, Temesgen Tadeyos Zate, Peiren Wang, Soumyajit Mojumder, Elo Overgaard Mogensen, Oriol Gavalda‐Diaz, Zihe Li, Shitong Zhou, Ajeet Kumar, James Roscow, Hamideh Khanbareh, Astri Bjørnetun Haugen, Florian Bouville   +12 more
wiley   +1 more source

Piezoelectric scaffold for tissue engineering: material, structure, fabrication and function

International Journal of Extreme Manufacturing
The scaffold for tissue engineering not only requires good biocompatibility, mechanical properties, and appropriate structure, but also should actively participate in biophysical and biochemical processes to accelerate tissue repair.
Jiye Jia, Junwei Shen, Feng Yang, Jing Zhang, Cijun Shuai, Pei Feng   +5 more
doaj   +1 more source

Micro-arranged ZnO particles and conductive fillers in PCL composites for enhanced piezoelectric and dielectric properties in bone tissue engineering applications

Materials & Design
Piezoelectric polymers are promising for replicating bone tissue’s piezoelectric properties. Typically, non-piezoelectric biopolymers are combined with piezoelectric particles, but this yields low piezoelectric output.
Francisco Fernández-Gil, Felipe Olate-Moya, José Ricardo Aguilar-Cosme, Javier García-Molleja, Juan Pedro Fernández-Blázquez, Sarah Cartmell, Humberto Palza   +6 more
doaj   +1 more source

Effect of Temperature and Pressure Variations on the Resonant Frequency of Piezoelectric Material

Measurement + Control, 2016
Ultrasound transducers are used in a multitude of applications. A typical ultrasound transducer assembly consists of a piezoelectric layer, one or more matching layers and a backing layer.
Vaishali Upadhye, Sudhir Agashe
doaj   +1 more source

Phase Diagrams and Piezoelectric Properties of Wurtzite Al_1-x-ySc_xGd_yN Heterostructural Alloys. [PDF]

Adv Sci (Weinh)
This study demonstrates ferroelectricity and piezoelectric properties improvement of quaternary wurtzite Al1−x−yScxGdyN${\rm Al}_{1-x-y}{\rm Sc}_x{\rm Gd}_y{\rm N}$ films, guided by density functional theory calculations. Wurtzite Al1−x−yScxGdyN${\rm Al}_{1-x-y}{\rm Sc}_x{\rm Gd}_y{\rm N}$ films have a high optical bandgap, enhanced piezoelectric ...
Martin JL, Lee CW, Bernstein NSP, Nguyen T, Bryan A, Cooper E, Mangum JS, Bauers SR, Zakutayev A, Yazawa K, Gorai P, Smaha RW.   +11 more
europepmc   +2 more sources

Effects of temperature on the impedance of piezoelectric actuators used for SHM [PDF]

, 2014
— FEM modeling of piezoelectric patches used as actuators and sensors for SHM applications. — Test/analysis correlation of temperature effects in piezoelectric materials and glue — Numerical methods associated with the prediction of electric transfers ...
BALMES, Etienne, GUSKOV, Mikhail, MECHBAL, Nazih, RÉBILLAT, Marc   +3 more
core  

Performance of piezoelectric shunts for vibration reduction [PDF]

, 2012
This work addresses passive reduction of structural vibration by means of shunted piezoelectric patches. The two classical resistive and resonant shunt solutions are considered.
DUCARNE, Julien, THOMAS, Olivier, DEÜ, Jean-François   +2 more
core   +1 more source

Atom Probe Tomography as an Emerging Tool for Understanding Defect‑Driven Mechanisms in HfO2‑Based Ferroelectrics

Advanced Functional Materials, EarlyView.
This Perspective highlights atom probe tomography as a powerful tool for understanding the atomic‐scale defect chemistry in HfO2‐based ferroelectrics. 3D mapping of dopants, point defects, and interface chemistry can provide new insight into defect‐driven mechanisms underpinning the ferroelectricity in the system and guide the design of more reliable ...
Kasper Hunnestad, Catherine Dubourdieu, Alexei Gruverman, Dennis Meier   +3 more
wiley   +1 more source

Preparation and piezoelectric properties of thermoplastic polyurethane elastomer/methylamine lead iodine composite film

Hecheng xiangjiao gongye
"Methylamine lead iodine was synthesized by low-temperature liquid phase method, and thermoplastic polyurethane elastomer/methylamine lead iodine composite films were prepared by tap casting method.
"SHU Ben-qin1, SUN Xiao-kai2, LI Xiao-qiang1, FU Yu-heng2, YI Juan2, HU Guo-hua2, XIONG Chuan-xi2"
doaj   +1 more source