Results 41 to 50 of about 9,169,325 (384)

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

Performance of transducers with segmented piezoelectric stacks using materials with high electromechanical coupling coefficient

open access: yes, 2013
Underwater acoustic transducers often include a stack of thickness polarized piezoelectric material pieces of alternating polarity interspersed with electrodes, bonded together and electrically connected in parallel.
Markley, Douglas C.   +2 more
core   +1 more source

THE ROLE OF THE MARKETING COMMUNICATION IN THE ENTERING OF UKRAINIAN ENTERPRISES IN THE WORLD MARKET [PDF]

open access: yes, 2008
The dielectric, piezoelectric, and acoustic properties of PMN-0.32PT (Pb(Mg(1/3)Nb(2/3)) O(3)-PbTiO(3)) single crystals were investigated as a function of sample thickness ranging from 120 to 30 μm in order to enlighten the origin of property degradation
Alagha, Shima   +5 more
core   +1 more source

Review on Innovative Piezoelectric Materials for Mechanical Energy Harvesting

open access: yesEnergies, 2022
The huge number of electronic devices called the Internet of Things requires miniaturized, autonomous and ecologically sustainable power sources. A viable way to power these devices is by converting mechanical energy into electrical through electro ...
Giacomo Clementi   +9 more
doaj   +1 more source

Piezoelectricity of Cholesteric Elastomers

open access: yes, 1994
We consider theoretically the properties of piezoelectricity in cholesteric elastomers. We deduce using symmetry considerations the piezoelectric contributions to the free energy in the context of a coarse-grained description of the material. In contrast
Meyer, Robert B., Pelcovits, Robert A.
core   +1 more source

Highly piezoelectric, biodegradable, and flexible amino acid nanofibers for medical applications

open access: yesScience Advances, 2023
Amino acid crystals are an attractive piezoelectric material as they have an ultrahigh piezoelectric coefficient and have an appealing safety profile for medical implant applications.
Meysam T. Chorsi   +18 more
semanticscholar   +1 more source

Biodegradable Piezoelectric Polymers: Recent Advancements in Materials and Applications

open access: yesAdvanced Healthcare Materials, 2023
Recent materials, microfabrication, and biotechnology improvements have introduced numerous exciting bioelectronic devices based on piezoelectric materials. There is an intriguing evolution from conventional unrecyclable materials to biodegradable, green,
Mohsin Ali   +4 more
semanticscholar   +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

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

Ab Initio Study on 3D Anisotropic Ferroelectric Switching Mechanism and Coercive Field in HfO2 and ZrO2

open access: yesAdvanced Functional Materials, EarlyView.
This study uncovers a new switching mechanism in HfO2 and ZrO2, where the absence of a non‐polar layer along the a‐direction induces interaction between polar layers. Consequently, the switching barriers for growth are lower than those for nucleation in this direction, leading to a size‐dependent coercive field that matches experimental observations ...
Kun Hee Ye   +6 more
wiley   +1 more source

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