Results 31 to 40 of about 99,429 (270)

Black Branes as Piezoelectrics

open access: yes, 2012
We find a realization of linear electroelasticity theory in gravitational physics by uncovering a new response coefficient of charged black branes, exhibiting their piezoelectric behavior.
J. Souriou   +3 more
core   +1 more source

Piezoelectric mimicry of flexoelectricity [PDF]

open access: yes, 2018
The origin of "giant" flexoelectricity, orders of magnitude larger than theoretically predicted, yet frequently observed, is under intense scrutiny. There is mounting evidence correlating giant flexoelectric-like effects with parasitic piezoelectricity ...
Abdollahi, Amir   +2 more
core   +4 more sources

First Principles Theories of Piezoelectric Materials

open access: yes, 2007
Piezoelectrics have long been studied using parameterized models fit to experimental data, starting with the work of Devonshire in 1954. Much has been learned using such approaches, but they can also miss major phenomena if the materials properties are ...
Cohen, R. E.
core   +1 more source

3D-Based Transition hpq/hp-Adaptive Finite Elements for Analysis of Piezoelectrics

open access: yesApplied Sciences, 2021
This paper concerns the algorithm of transition piezoelectric elements for adaptive analysis of electro-mechanical systems. In addition, effectivity of the proposed elements in such an analysis is presented.
Grzegorz Zboiński, Magdalena Zielińska
doaj   +1 more source

Challenges during Flash Lamp Annealing of Aerosol‐Deposited Barium Titanate Films

open access: yesAdvanced Engineering Materials, EarlyView.
Aerosol deposition is used to rapidly deposit barium titanate films with thicknesses ranging from 2 to 16 μm at room temperature, eliminating the need for further densification. However, to recover the electromechanical properties, annealing is required, which limits the usage of temperature‐sensitive substrates.
Michel Kuhfuß   +7 more
wiley   +1 more source

Comparison Of Different Auxetic Enhancement Layers For Shunted Piezoelectric Control [PDF]

open access: yesE3S Web of Conferences
Piezoelectric patches connected to passive shunt circuits can be applied to structures for effective vibration attenuation. The structure under consideration consists of a beam, piezoelectric patches, and possibly an inserted auxetic layer, enhancing the
Daraki Maria-Styliani   +6 more
doaj   +1 more source

Current Achievements in Flexible Piezoelectric Nanogenerators Based on Barium Titanate

open access: yesNanomaterials, 2023
Harvesting ambient mechanical energy at the nanometric scale holds great promise for powering small electronics and achieving self-powered electronic devices.
Olena Okhay, Alexander Tkach
doaj   +1 more source

Piezo-generated charge mapping revealed through Direct Piezoelectric Force Microscopy

open access: yes, 2016
While piezoelectrics and ferroelectrics are playing a key role in many everyday applications, there are still a number of open questions related to the physics of those materials.
Carretero-Genevrier, Adrien   +4 more
core   +2 more sources

Screen‐Printed Flexible Piezoelectric Force Sensor Array with Electromagnetic Interference Shielding

open access: yesAdvanced Engineering Materials, EarlyView.
This article introduces a flexible screen‐printed piezoelectric sensor array designed for low‐frequency healthcare applications such as tactile sensing and cardiovascular monitoring. The device integrates interface electronics enabling the simultaneous acquisition of up to 128 signals, along with flexible EMI shielding that significantly reduces noise ...
Joseph Faudou   +6 more
wiley   +1 more source

Predicting morphotropic phase boundary locations and transition temperatures in Pb- and Bi-based perovskite solid solutions from crystal chemical data and first-principles calculations

open access: yes, 2005
Using data obtained from first-principles calculations, we show that the position of the morphotropic phase boundary (MPB) and transition temperature at MPB in ferroelectric perovskite solutions can be predicted with quantitative accuracy from the ...
Andrew M. Rappe   +6 more
core   +1 more source

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