Results 61 to 70 of about 53,830 (313)

Piezoelectric and related properties of hydrated collagen

Biophysical Journal, 1976
Two piezoelectric constants (polarization per unit stress, d=d'-id'', and polarization per unit strain, e=e'-ie''), the elastic constant, and dielectric constant are determined for oriented collagen at different hydration levels at 10 Hz from -150 to 50 degrees C. With no hydration (approximately 0% H2O), d' increases slightly with higher temperatures,
Fukada, E., Ueda, H., Rinaldi, R.
openaire   +2 more sources

A new flextensional piezoelectric ultrasonic motor - design, fabrication and characterisation

, 2007
This paper presents the techniques used for the characterisation of a new type of standing-wave piezoelectric ultrasonic motor. The motor uses a metallic flextensional amplifier, or “cymbal”, to convert the radial mode vibrations of a piezoelectric ...
Wilson, Stephen, Leinvuo, J. T., Whatmore, R. W., Leinvuo, Joni T., Wilson, Stephen A., Whatmore, Roger W., Cain, Markys G., Cain, M. G.   +7 more
core   +1 more source

Mesoscale Domain Evolution Mechanism during Alternating Current (AC) Poling of Relaxor Ferroelectrics

Advanced Functional Materials, EarlyView.
Ferroelectric domain variants that are energetically equivalent are expected to remain preserved during polarization reversal. However, phase‐field simulations reveal that inclined domain walls in relaxor ferroelectrics can undergo irreversible elimination during alternating current poling through a proximity effect driven by long‐range elastic ...
Yuan‐Jie Sun, Bo Wang, Long‐Qing Chen   +2 more
wiley   +1 more source

Relaxation-Related Piezoelectric and Dielectric Behavior of Bi(Mg,Ti)O₃–PbTiO₃ Ceramic

Sensors, 2019
Piezoelectric and dielectric materials have attracted much attention for their functional device applications. Despite its excellent piezoelectric properties, the content of lead in piezoelectric materials should be restricted to prevent future ...
Min Young Park, Jae-Hoon Ji, Jung-Hyuk Koh   +2 more
doaj   +1 more source

Portable Breathing Monitoring With Phase‐Resolved Airflow Dynamics Enabled by a Dual‐Response Flexible PZT Sensor

Advanced Healthcare Materials, EarlyView.
A portable respiratory monitoring device based on a flexible PZT sensor captures pressure‐ and temperature‐related airflow responses in a single waveform. Polarity‐opposed piezoelectric and pyroelectric components generate a narrow transient spike and a broad quasi‐steady peak during both inhalation and exhalation. This dual‐component structure enables
Minyu Li, Jun Aoyama, Yuchao Wu, Tomomi Uchiyama, Kosho Yoshikawa, Toshiki Mano, Yuxi Song, Hedong Zhang   +7 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

Advancing piezoelectricity and excellent thermal stability: <001>-textured 0.75BF–0.25BT lead-free ceramics for high temperature applications

Journal of Materiomics
There is an urgent need for piezoelectric materials possessing both high piezoelectric properties and good thermal stability to facilitate the advancement of high temperature piezoelectric devices.
Zhangpan Shen, Jian Guo, Xiaoyi Gao, Weidong Xuan, Jiye Zhang, Dawei Wang, Jinrong Cheng, Shujun Zhang, Jianguo Chen   +8 more
doaj   +1 more source

Active control of a clamped beam equipped with piezoelectric actuator and sensor using generalized predictive control [PDF]

, 2004
of a flexible structure is here presented. The studied structure is a clamped-free beam equipped with collocated piezoelectric actuator/sensor. Piezoelectric transducers advantages lie in theirs compactness and reliability, making them commonly used in
Pommier-Budinger, Valérie, Richelot, Julien, V. Pommier-Budinger, J. Richelot, Bordeneuve-Guibé, Joël, J. Bordeneuve-Guibe   +5 more
core   +1 more source

Microgel‐Based 3D Bioprinting: A Convergent Strategy Integrating Material Design, Jamming Dynamics, and Biological Function

Advanced Healthcare Materials, EarlyView.
Microgel‐based 3D printed constructs represent a compelling and versatile innovation for engineering architecturally complex, dynamically remodelable, and biocompatible structures with high structural fidelity and bioactivity. By integrating material design, biofabrication, and biological function, these systems enable the development of adaptive ...
Elena Ghighină, Andreea Ioana Dinu, Jana Ghițman   +2 more
wiley   +1 more source

Effects of sputtering process and annealing on the microstructure, crystallization orientation and piezoelectric properties of ZnO films

Next Materials
Ceramic piezoelectric films play a crucial role in sensors, acoustic wave devices, and micro-electromechanical systems (MEMS) due to their superior piezoelectric properties. This study focuses on optimizing ZnO piezoelectric films through radio frequency
Zhonghao Liu, Yuting Guo, Shang Li, Yanxiang Chen, Ke Deng, Hulin Liu, Shuren Guo, Xuanpu Dong, Huatang Cao   +8 more
doaj   +1 more source