Results 61 to 70 of about 17,613 (186)

Modal analysis and nonlinear characterization of an airborne power ultrasonic transducer with rectangular plate radiator [PDF]

, 2018
Some industrial processes like particle agglomeration or food dehydration among others can be enhanced by the use of power ultrasonic technologies.
Acosta, V.M., Andrés, R.R., Lucas, M., Riera, E.   +3 more
core   +1 more source

Sintering of Lead-Free Piezoelectric Sodium Potassium Niobate Ceramics

Materials, 2015
The potassium sodium niobate, K0.5Na0.5NbO3, solid solution (KNN) is considered as one of the most promising, environment-friendly, lead-free candidates to replace highly efficient, lead-based piezoelectrics. Since the first reports of KNN, it has been recognized that obtaining phase-pure materials with a high density and a uniform, fine-grained ...
Barbara Malič, Jurij Koruza, Jitka Hreščak, Janez Bernard, Ke Wang, John Fisher, Andreja Benčan   +6 more
openaire   +2 more sources

Generation of electrical energy using lead zirconate titanate (PZT-5A) piezoelectric material: Analytical, numerical and experimental verifications [PDF]

, 2016
Energy harvesting is the process of attaining energy from the external sources and transforming it into usable electrical energy. An analytical model of piezoelectric energy harvester has been developed to determine the output voltage across an ...
Ahmad, Nasir, Anjum, Zeeshan, Butt, Zubair, Elahi, Hassan, Pasha, Riffat Asim, Qayyum, Faisal   +5 more
core   +1 more source

High Piezoelectric Performance of KNN-Based Ceramics over a Broad Temperature Range through Crystal Orientation and Multilayer Engineering

Molecules
Uninterrupted breakthroughs in the room temperature piezoelectric properties of KNN-based piezoceramics have been witnessed over the past two decades; however, poor temperature stability presents a major challenge for KNN-based piezoelectric ceramics in ...
Guangrui Lu, Yunting Li, Rui Zhao, Yan Zhao, Jiaqi Zhao, Wangfeng Bai, Jiwei Zhai, Peng Li   +7 more
doaj   +1 more source

Sodium lithium niobate lead-free piezoceramics for high-power applications: Fundamental, progress, and perspective

Journal of Advanced Ceramics, 2023
With the capability of interconversion between electrical and mechanical energy, piezoelectric materials have been revolutionized by the implementation of perovskite-piezoelectric-ceramic-based studies over 70 years.
Chen-Bo-Wen LI, Zhao LI, Juan WANG, Yi-Xuan LIU, Jing-Tong LU, Ze XU, Pak-Sheng SOON, Ke BI, Chuan CHEN, Ke WANG   +9 more
doaj   +1 more source

Design of ultraprecision machine tools with application to manufacturing of miniature and micro components [PDF]

, 2005
Currently the underlying necessities for predictability, producibility and productivity remain big issues in ultraprecision machining of miniature/microproducts.
Chen, Dave Webb, EI-Fatatry, Frank Wardle, Gabler, Huang, Ikawa, Kai Cheng, Liu, Luo, McKeown, Nakazawa, Schellekens, Shinno, Slocum, Stephenson, Webster, Weck, Weck, Wybranski, Xichun Luo   +20 more
core   +1 more source

High-piezoelectric lead-free BiFeO3BaTiO3 ceramics with enhanced temperature stability and mechanical properties

Journal of Materiomics
BiFeO3BaTiO3 (BF–BT) ceramics exhibit higher piezoelectric coefficients (d33), Curie temperatures (TC), and temperature stability than other high-temperature lead-free piezoelectric materials. However, despite their crucial role in piezoelectric devices,
Xiaoxiao Zhou, Yuxin Xu, Xiaoqi Gao, Chengchao Hu, Wan Jiang, Hezhang Li, Bo-Ping Zhang   +6 more
doaj   +1 more source

Synthesis of high density sub-10 µm (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-xCeO2 lead-free ceramics using a two-step sintering technique

Journal of Asian Ceramic Societies, 2019
(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-xCeO2, (BCZTCe) lead-free piezoelectric ceramics were processed conventionally using a two-step sintering technique.
Vijay Bijalwan, Pavel Tofel
doaj   +1 more source

Printing High Viscosity Fluids using Ultrasonic Droplet Generation [PDF]

, 2008
A new printing technology based on ultrasonic actuation (~1 MHz) is presented that has the potential to print high viscosity fluids. In this paper, we describe the print-head’s operating principles and construction.
Margolin, Lauren, Rosen, David W., Vohra, Sanjay   +2 more
core   +1 more source

Ferroelectric Polarization Dependent Piezoelectric Hardening in BiFeO3‐BaTiO3 Lead‐Free Ceramics

Advanced Electronic Materials
The relation between the improvement of mechanical quality factor (Qm) and internal electric field (Ei) generated during the aging process in lead‐free piezoelectric BiFeO3‐BaTiO3 ceramics is investigated for hard piezoelectric application of power ...
Myang Hwan Lee, Hae In Choi, Da Jeong Kim, Ji Su Kim, Sang Woo Lee, Yubin Park, Sang Mo Yang, Tae Kwon Song   +7 more
doaj   +1 more source