Results 91 to 100 of about 8,610,161 (375)

Preparation and piezoelectric properties of thermoplastic polyurethane elastomer/methylamine lead iodine composite film

open access: yesHecheng xiangjiao gongye
"Methylamine lead iodine was synthesized by low-temperature liquid phase method, and thermoplastic polyurethane elastomer/methylamine lead iodine composite films were prepared by tap casting method.
"SHU Ben-qin1, SUN Xiao-kai2, LI Xiao-qiang1, FU Yu-heng2, YI Juan2, HU Guo-hua2, XIONG Chuan-xi2"
doaj   +1 more source

Fabrication and Characterization of Aligned Flexible Lead-Free Piezoelectric Nanofibers for Wearable Device Applications

open access: yesNanomaterials, 2018
Flexible lead-free piezoelectric nanofibers, based on BNT-ST (0.78Bi0.5Na0.5TiO3-0.22SrTiO3) ceramic and poly(vinylidene fluoride-trifluoroethylene) (PVDF-TrFE) copolymers, were fabricated by an electrospinning method and the effects of the degree of ...
Sang Hyun Ji, Ji Sun Yun
doaj   +1 more source

Domain Size Dependence of Piezoelectric Properties of Ferroelectrics

open access: yes, 2004
The domain size dependence of piezoelectric properties of ferroelectrics is investigated using a continuum Ginzburg-Landau model that incorporates the long-range elastic and electrostatic interactions.
A. M. Bratkovsky   +9 more
core   +1 more source

Dielectric Properties of Piezoelectric Polyimides [PDF]

open access: yesMRS Proceedings, 1996
ABSTRACTMolecular modeling and dielectric measurements are being used to identify mechanisms governing piezoelectric behavior in polyimides such as dipole orientation during poling, as well as degree of piezoelectricity achievable. Molecular modeling on polyimides containing pendant, polar nitrile (CN) groups has been completed to determine their ...
Z. Ounaies   +3 more
openaire   +1 more source

Ice Lithography: Recent Progress Opens a New Frontier of Opportunities

open access: yesAdvanced Functional Materials, EarlyView.
This review focuses on recent advancements in ice lithography, including breakthroughs in compatible precursors and substrates, processes and applications, hardware, and digital methods. Moreover, it offers a roadmap to uncover innovation opportunities for ice lithography in fields such as biological, nanoengineering and microsystems, biophysics and ...
Bingdong Chang   +9 more
wiley   +1 more source

Micro-arranged ZnO particles and conductive fillers in PCL composites for enhanced piezoelectric and dielectric properties in bone tissue engineering applications

open access: yesMaterials & Design
Piezoelectric polymers are promising for replicating bone tissue’s piezoelectric properties. Typically, non-piezoelectric biopolymers are combined with piezoelectric particles, but this yields low piezoelectric output.
Francisco Fernández-Gil   +6 more
doaj   +1 more source

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

Physico-Mechanical, Dielectric, and Piezoelectric Properties of PVDF Electrospun Mats Containing Silver Nanoparticles

open access: yes, 2017
Poly(vinylidene fluoride) (PVDF) is a piezoelectric material with outstanding physical and mechanical properties. The piezoelectric properties depend on the β-phase content of this polymer, while the physical and mechanical properties depend on the ...
A. Issa   +4 more
semanticscholar   +1 more source

Peptide Sequencing With Single Acid Resolution Using a Sub‐Nanometer Diameter Pore

open access: yesAdvanced Functional Materials, EarlyView.
To sequence a single molecule of Aβ1−42–sodium dodecyl sulfate (SDS), the aggregate is forced through a sub‐nanopore 0.4 nm in diameter spanning a 4.0 nm thick membrane. The figure is a visual molecular dynamics (VMD) snapshot depicting the translocation of Aβ1−42–SDS through the pore; only the peptide, the SDS, the Na+ (yellow/green) and Cl− (cyan ...
Apurba Paul   +8 more
wiley   +1 more source

Self-Powered Wearable Pressure Sensors with Enhanced Piezoelectric Properties of Aligned P(VDF-TrFE)/MWCNT Composites for Monitoring Human Physiological and Muscle Motion Signs

open access: yesNanomaterials, 2018
Self-powered operation, flexibility, excellent mechanical properties, and ultra-high sensitivity are highly desired properties for pressure sensors in human health monitoring and anthropomorphic robotic systems.
Aochen Wang   +3 more
semanticscholar   +1 more source

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