Results 61 to 70 of about 11,554 (305)

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

Piezoelectricity in Polyacrylonitrile [PDF]

Polymer Journal, 1984
The piezoelectric and related properties in ion-doped (NH4NO3, NaNO3) and undoped films of polyacrylonitrile have been measured as a function of temperature. The piezoelectric constants of both ion-doped and undoped films reach a maximum around 80°C and thereafter decrease markedly with temperature.
Ueda, H., Carr, S. H.
openaire   +1 more source

Role of Extrinsic Contribution to Temperature Stability of Piezoelectricity for (K,Na)NbO₃-(Bi,M)ZrO₃ Ceramics with Morphotropic Phase Boundary

Energies, 2020
Temperature stability of dielectric, ferroelectric, and piezoelectric properties were investigated in situ by choosing (K,Na)NbO3-(Bi,K)ZrO3 (KNN-BKZ), (K,Na)NbO3-(Bi,Na,K,Li)ZrO3 (KNN-BNKLZ), and (K,Na)NbO3-(Bi,Li)ZrO3-(KNN-BLZ) as representative ...
Gyoung-Ja Lee, Min-Ku Lee
doaj   +1 more source

RESONANT GIANT MAGNETOELECTRIC EFFECT OF PIEZOELECTRIC/MAGNET COMPOSITES

, 2012
The frequency dependence of giant magnetoelectric (ME) effect origining from the coupling of piezoelectricity and magnetic torque in piezo-bimorph/magnet composites has been investigated.
Xing, Zeng-ping, He, Bin, Xu, Kai, Kai Xu, Du, Jian-ke, Zeng-ping Xing, Xing, ZP, Jian-ke Du, Bin He   +8 more
core   +1 more source

Transparent crystals with ultrahigh piezoelectricity

, 2020
It has been difficult to make transparent materials that have extremely high piezoelectricity — a useful property related to the coupling of electric fields and mechanical strain.
Jurij Koruza, Koruza, Jurij
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, Bokeon Kwak, Gaia de Marzo, Giulia Coco, Valentina Antonaci, Leonardo Lamanna, Massimo De Vittorio, Dario Floreano, Mario Caironi   +8 more
wiley   +1 more source

Application of the Finite Element Method (FEM) to Analyze the Mechanical Behavior of Piezoelectric Materials When an Electric Field Is Applied to a Piezoelectric Structure (Inverse Piezoelectricity)

Engineering Proceedings
Modeling the inverse impact of piezoelectricity on the mechanical response of smart (piezoelectric) materials through the finite element method (FEM) requires a comprehensive framework that encompasses a multitude of components and intricacies.
Mehdi Boudouh, Brahim El Khalil Hachi, Mohamed Haboussi, Sadam Houcine Habib   +3 more
doaj   +1 more source

Bio‐Inspired Artificial Ionic Mechanoreceptor

Advanced Functional Materials, EarlyView.
A skin‐inspired artificial mechanoreceptor based on ionic interactions is presented for biomimetic tactile sensing. Pressure‐driven ionic redistribution within microfluidic channels generates a self‐powered electrical signal without external bias. The generated waveform exhibits mechanoreceptor‐like temporal features, including overshoot and undershoot,
Mohammad Akbari, Jeppe Don, Lasse A. N. Pedersen, John Noee, Rassoul Tabassian   +4 more
wiley   +1 more source

Advanced Piezoelectric Materials, Devices, and Systems for Orthopedic Medicine

Advanced Science
Harnessing the robust electromechanical couplings, piezoelectric materials not only enable efficient bio‐energy harvesting, physiological sensing and actuating but also open enormous opportunities for therapeutic treatments through surface polarization ...
Jingkai Zhang, Chang Liu, Jun Li, Tao Yu, Jing Ruan, Fan Yang   +5 more
doaj   +1 more source

The Continuum Theory of Piezoelectricity and Piezomagnetism

, 2020
Following the motivation of this work, this chapter introduces the basic concepts of continuum mechanics and electromagnetism. Attention is then focused on linear piezoelectricity, elaborating two ways of writing the governing equations: the displacement
Malyarenko, Anatoliy,, Ostoja-Starzewski, M.,, Amiri-Hezaveh, A.,   +2 more
core   +1 more source