Piezoelectrics Research Papers - Academia.edu (original) (raw)

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- Analytical Chemistry, Titanium, Sensors, Ceramics
- by Kenji Uchino
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- Electrical Engineering, Mechanical Engineering, Materials Science, PMN
- by Jinsung Chun
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- Biodegradable, Composite, Piezoelectrics, Silk fibroin protein
- by Michal Kozupa
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- Vibration, Sound insulation, Piezoelectrics
- by Mike O'Neill
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- MEMS, Irrigation, Piezoelectric material, Diffraction
- by Markys Cain
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- Earth Sciences, Energy Harvesting, Hybrid, Piezoelectrics
- by Satyanarayan Patel
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- Energy technology, Ceramics, Piezoelectrics
- by G A Bukhtiyarova
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- Engineering, Chemical Engineering, Condensed Matter Physics, Technology

The fabrication of a mechanically flexible, piezoelectric nanocomposite material for strain sensing applications is reported. Nanocomposite material consisting of zinc oxide (ZnO) nanostructures embedded in a stable matrix of paper (cellulose fibers) is prepared by a solvothermal method. The applicability of this material as a strain sensor is demonstrated by studying its real-time current response under both static and dynamic mechanical loading. The material presented highlights a novel approach to introduce flexibility into strain sensors by embedding crystalline piezoelectric material in a flexible cellulose-based secondary matrix.

- by Emre Erdem
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- Condensed Matter Physics, Thermodynamics, High Frequency, Ferroelectrics

Piezoelectric oxides are currently being considered in combination with magnetic materials for the development of magnetoelectric composites, in which stress transfer across the interface is a key issue. In this context, we report here a detailed study of the mechanochemical activation processes of the ferroelectric perovskite BiScO3–PbTiO3 and of the ferrimagnetic spinel NiFe2O4. Highly sinterable, single-phase nanopowders of both ferroic

- by Miguel Algueró
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- Materials Engineering, Composites, Magnetic Materials, Nanoparticle
- by Gian Luca Ghiringhelli
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- Piezoelectrics, Rotor Dynamics
- by Nathan Jackson
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- MEMS, Irrigation, Piezoelectric material, Diffraction
- by Soonshin Kwon
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- Engineering, Advanced Materials, Field effect transistors, Nanowires

A comparison between the influence of concurrent A and B-site acceptor-donor (Li,Nb) and donor (La,Nb) doping in Pb-free Bi 0.5 (Na 0.84 K 0.16 ) 0.5 TiO 3 –SrTiO 3 piezoelectrics on structure, ferroelectric and the high voltage induced strain were made. In this work, Lithium was chosen as acceptor and Lanthanum was chosen as donor dopant on A-site and Nb 5+ as a B-site donor. Both modifier impurities promoted a phase evolution from the coexistent of two-phase structures (rhombohedral tetragonal) into a more symmetric single pseudocubic structure. Nonetheless, (La,Nb) donor-donor doping induced the phase transition at 1 mol%, while (Li,Nb) acceptor-donor doping at 2 mol%. Interestingly, acceptor-donor (Li,Nb) co-substitution results in the broadening of ergodic relaxor and ferroelectric (ER-FE) mixed phase boundary which is favourable for multidevice applications. This comparative study show that the A-site vacancies play a substantial role to induce the phase transformation from nonergodic-ergodic relaxor (NR-ER) and the improvement in their high voltage induced strain.

- by Ibrahim M . Alarifi
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- Ceramics (Archaeology), Piezoelectrics