Results 41 to 50 of about 7,264,350 (237)
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 +12 more
wiley +1 more source
Advanced Functional Materials, EarlyView.A thermodynamic model that incorporates ferroelectric, antiferroelectric, and antiferrodistortive orders of PbZrO3${\rm PbZrO}_3$ is established and parameterized based on experimental measurements and first‐principles calculations. We derive a Clapeyron‐like equation for describing the temperature‐dependence of critical electric fields for the ...
Zhiyang Wang +3 more
wiley +1 more source
An energetic definition of the electromechanical coupling coefficient for CMUTs
, 2001 The most important property of an electromechanical transducer is its ability to convert electrical energy into mechanical energy and vice versa. This energy conversion is fully characterized by the electromechanical coupling coefficient k. In this paper
M. PAPPALARDO +7 more
core +1 more source
Modification of Electromechanical Coupling in Electromagnetic Harvester
, 2022 This paper focuses on the modelling and analysis of electromechanical coupling in a magnetic levitation energy harvester. A prototype harvester is built and its performance is tested with a shaker under resonance conditions.
Krzysztof Kecik
core +1 more source
An Edible Chitosan‐Based Acoustic Sensor for Sound‐Responsive Actuation in Edible Robots
Advanced Functional Materials, EarlyView.This study introduces an edible acoustic sensor for robotic food and edible robotics. Built from a chitosan piezoelectric film between gold electrodes, the sensor enables acoustic communication through ON/OFF keying. Integrated into an edible robot with pneumatically actuated arms and neck, it responds to high‐frequency tones.
Valerio Francesco Annese +8 more
wiley +1 more source
SensorsNon-uniform composite structures for transducers exhibit considerable potential in enhancing impedance matching and efficiency. Here, a functionally graded material composite spherical piezoelectric transducer (FGM-cSPT) is proposed, and a three-port ...
Sha Wang, Junjie Shan
doaj +1 more source
Sensors, 2019 To increase the ultrasonic intensity and power of a piezoelectric transducer, a cascaded piezoelectric ultrasonic transducer with the three sets of piezoelectric ceramic stacks is analyzed.
Xiangdi Meng, Shuyu Lin
doaj +1 more source
, 1998 This paper describes a super high electromechanical coupling SAW propagating on potassium niobate (KNbO3) substrate and its applications for low-loss, wide band and temperature stable SAW filters. KNbO3 has large piezoelectric constants.
K. Yamanouchi +3 more
core +1 more source
Advanced Functional Materials, EarlyView.Hafnium zirconium oxide thin films are grown using plasma‐enhanced atomic layer deposition with the addition of an atomic layer annealing (ALA) step. ALA leads to a change in the short‐range structure of the deposit and encourages formation of the ferroelectric Pca21 phase. The result is wake‐up‐free performance with films exposed to ALA.
Nicolas K. Lam +18 more
wiley +1 more source
The effect of IPMC parameters in electromechanical coefficient based on equivalent beam theory
, 2008 “Effective” electromechanical coupling coefficient for IPMC by equivalent bimorph beam model is studied. The collective effect of the membrane thickness and operating voltage is demonstrated by using a design of experiment of three and four levels of ...
Yusuf Menceloglu +5 more
core +1 more source