Results 81 to 90 of about 17,613 (186)

Thermal Evolution of Dielectric and Piezoelectric properties of Lead-Free Submicron-Structured (Bi0.5Na0.5)0.94Ba0.06TiO3 Ceramics [PDF]

The challenge to develop high piezoelectric sensitivity and lead-free compositions ferroelectric ceramics has bring new interest to the study of some classical ferroelectrics as (Bi0.5Na0.5)TiO3 and its solid solutions.
Breb?l, Klaus, Galassi, Carmen, Garc?a, Alvaro, Mercadelli, Elisa, Pardo, Lorena   +4 more
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Photoferroelectric oxides

, 2017
Giant photovoltaic effect due to bulk photovoltaic effect observed in multiferroic BiFeO3 thin films has triggered a renewed interest on photoferroelectric materials for photovoltaic applications.
Dkhil, B., Fina, I., Paillard, C.
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Flutter suppression via piezoelectric actuation [PDF]

Experimental flutter results obtained from wind tunnel tests of a two degree of freedom wind tunnel model are presented for the open and closed loop systems.
Heeg, Jennifer
core   +1 more source

Exceptional electrostrain with minimal hysteresis and superior temperature stability under low electric field in KNN-based lead-free piezoceramics

Journal of Advanced Ceramics
Over the past two decades, (K0.5Na0.5)NbO3 (KNN)-based lead-free piezoelectric ceramics have made significant progress. However, attaining a high electrostrain with remarkable temperature stability and minimal hysteresis under low electric fields has ...
Huan Liu, Yijin Hao, Ziqi Yang, Tianyi Feng, Bin Su, Xin Zhang, Mengping Xue, Bo-Ping Zhang, Jing-Feng Li   +8 more
doaj   +1 more source

Highly transparent lead-free piezoelectric haptic device

Communications Materials
Acoustic haptic technology adds touch sensations to human-machine interfaces by integrating piezoelectric actuators onto touchscreens. Traditional piezoelectric haptic technologies use opaque lead-containing ceramics that are both toxic and visible.
Longfei Song, Sebastjan Glinsek, Nagamalleswara Rao Alluri, Veronika Kovacova, Michele Melchiorr, Alfredo Blazquez Martinez, Barnik Mandal, Juliette Cardoletti, Emmanuel Defay   +8 more
doaj   +1 more source

Acousto-ultrasonic nondestructive evaluation of materials using laser beam generation and detection [PDF]

The acousto-ultrasonic method has proven to be a most interesting technique for nondestructive evaluation of the mechanical properties of a variety of materials.
Green, Robert E., Jr., Huber, Robert D.
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Superconductivity devices: Commercial use of space [PDF]

A YBCO thick film containing 20 percent Ag2O with a T(sub c) of 86.8 K and J(sub c) of 108 A/sq cm was obtained. The film was fabricated by a two-step firing process, i.e., firing the film at 1000 C for 10 minutes and annealing at 970 C for 30 minutes ...
Furman, Eugene, Haertling, Gene, Hsi, Chi-Shiung, Li, Guang   +3 more
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The synthesis and characterization of alkaline niobate-based ceramic composites containing L-lysine Hydrochloride

European Mechanical Science
Some lead-free piezoelectric ceramics are known to have high dielectric and piezoelectric properties but are limited by their brittle nature. A few amino acids have recently been reported to exhibit rather low dielectric and piezoelectric properties but ...
Chiedozie Oluigbo, Henry Mgbemere, Viktoriya Semeykina   +2 more
doaj   +1 more source

Enhancing piezoelectric coefficient and thermal stability in lead-free piezoceramics: insights at the atomic-scale

Nature Communications
Given the highly temperature-sensitive nature of the polymorphic phase boundaries, attaining excellent piezoelectric coefficient with superior temperature stability in lead-free piezoceramics via direct compositional design remains a formidable challenge.
Jinzhu Zou, Miao Song, Xuefan Zhou, Wenchao Chi, Tongxin Wei, Kechao Zhou, Dou Zhang, Shujun Zhang   +7 more
doaj   +1 more source

Program for an improved hypersonic temperature-sensing probe [PDF]

Under a NASA Dryden-sponsored contract in the mid 1960s, temperatures of up to 2200 C were successfully measured using a fluid oscillator. The current program, although limited in scope, explores the problem areas which must be solved if this technique ...
Reilly, Richard J.
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