Results 51 to 60 of about 15,466,743 (305)

Passive Damping of Longitudinal Vibrations of a Beam in the Vicinity of Natural Frequencies Using the Piezoelectric Effect

Axioms, 2023
To significantly reduce the amplitude of longitudinal vibrations of the beam in the vicinity of its natural frequencies, a fundamentally new method of damping vibrations is used.
Nelly Rogacheva, Vladimir Sidorov, Yulia Zheglova   +2 more
doaj   +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

PVDF Based Static Charge Induced Flexoelectric Microphone

Advanced Electronic Materials, 2023
Polyvinylidenedifluoride (PVDF)‐based microphones are either categorized as piezoelectric (PE) microphones or flexoelectric (FE)‐induced PE microphones. Based on the production of electrostatic charge and higher sensitivity, here, a static charge induced
Mudassar Shehzad, Han Pan, Shuhao Wang, Yaojin Wang   +3 more
doaj   +1 more source

Origin of Negative Longitudinal Piezoelectric Effect. [PDF]

Physical Review Letters, 2017
Piezoelectrics with negative longitudinal piezoelectric coefficients will contract in the direction of an applied electric field. Such piezoelectrics are thought to be rare, but there is no fundamental physics preventing the realization of negative ...
Shi Liu, Ronald E. Cohen, Ronald E. Cohen   +2 more
semanticscholar   +1 more source

Shaping Matter with Acoustic Waves: From Particles to Functional Structures

Advanced Functional Materials, EarlyView.
Acoustic‐directed assembly is reviewed as a materials‐oriented strategy for organizing particles, polymers, metals, and biological systems into functional structures. The review distinguishes reversible manipulation from permanent structure formation through medium fixation, particle fixation, and in situ material generation, highlighting routes toward
Avraham Kenigsberg, Shelly Zlotnikov, Maya Fiorentino, Yuval Elias, Ornit Nagler‐Avramovitz, Hagay Shpaisman   +5 more
wiley   +1 more source

Numerical Analysis of Piezoelectric Active Repair in the Presence of Frictional Contact Conditions

Sensors, 2013
The increasing development of smart materials, such as piezoelectric and shape memory alloys, has opened new opportunities for improving repair techniques. Particularly, active repairs, based on the converse piezoelectric effect, can increase the life of
Antonio Messineo, Calogero Orlando, Alberto Milazzo, Andrea Alaimo   +3 more
doaj   +1 more source

Toward Enhanced Inertial Sensing via Dynamically Soft Topological States in Piezoelectric Microacoustic Metamaterials

Advanced Functional Materials, EarlyView.
A piezoelectric microacoustic wave device exploiting topologically protected interface states with significantly higher dynamic compliance than Lamb or Rayleigh modes achieves record‐high out‐of‐plane particle velocities exceeding 51 m/s. These findings indicate that leveraging topological interface states can overcome key limitations of piezoelectric ...
Onurcan Kaya, Niccolò Scalise Pantuso, Marco Galli, Jacopo M. De Ponti, Tommaso Maggioli, Davide Pavesi, Siddhartha Ghosh, Attilio Frangi, Luca Colombo, Benyamin Davaji, Matteo Rinaldi, David Horsley, Cristian Cassella   +12 more
wiley   +1 more source

Enhanced Piezoelectric Effect Derived from Grain Boundary in MoS2 Monolayers.

Nano letters (Print), 2019
Recent discovery of piezoelectricity existed in two-dimensional (2D) layered materials represents a key milestone for flexible electronics, miniaturized and wearable devices. However, the so far reported piezoe-lectricity in these 2D layered materials is
Mingjin Dai, Wei Zheng, X. Zhang, Sanmei Wang, Junhao Lin, Kai Li, Yunxia Hu, Enwei Sun, Jia Zhang, Yunfeng Qiu, Yongqing Fu, W. Cao, P. Hu   +12 more
semanticscholar   +1 more source

Robust Interlayer Exciton Interplay in a Twisted van der Waals Heterotrilayer on a Broadband Bragg Reflector up to Room Temperature

Advanced Functional Materials, EarlyView.
In this work, we highlight a unique material platform capable of producing three distinct room temperature (RT) photoluminescence (PL) resonances from spatially separated regions composed of a heterobilayer (HBL), a homobilayer (HoBL), and an heterotrilayer (HTL) transition metal dichalcogenide (TMD) heterostructures configuration on a highly ...
Bhabani Sankar Sahoo, Shachi Machchhar, Avijit Barua, Martin Podhorský, Seth Ariel Tongay, Takashi Taniguchi, Kenji Watanabe, Chirag Chandrakant Palekar, Stephan Reitzenstein   +8 more
wiley   +1 more source

Two-Dimensional van der Waals Materials with Aligned In-Plane Polarization and Large Piezoelectric Effect for Self-Powered Piezoelectric Sensors.

Nano letters (Print), 2019
Piezoelectric two-dimensional (2D) van der Waals (vdWs) materials are highly desirable for applications in miniaturized and flexible/wearable devices. However, the reverse-polarization between adjacent layers in current 2D layered materials results in ...
Mingjin Dai, Zhiguo Wang, Fakun Wang, Yunfeng Qiu, Jia Zhang, Chengyan Xu, T. Zhai, W. Cao, Yongqing Fu, D. Jia, Yu Zhou, P. Hu   +11 more
semanticscholar   +1 more source