Results 11 to 20 of about 3,350 (215)

Fast-firing of potassium sodium niobate (KNN)

Open Ceramics
Potassium sodium niobate (KNN) is one of the most promising Pb-free piezo-ceramics. In the present work, KNN was produced by fast-firing with different cooling strategies, i.e., fast and slow cooling.
Levent Karacasulu, Merve Karakaya, Umut Adem, Vincenzo M. Sglavo, Mattia Biesuz, Cekdar Vakifahmetoglu   +5 more
doaj   +3 more sources

Acceptor and Donor Dopants in Potassium Sodium Niobate Based Ceramics [PDF]

Frontiers in Materials, 2020
B-site doping in potassium sodium niobate (KNN) with Mn2+ (M⁢nNb″′) and Ti4+ (T⁢iNb′) dopants were soluble but prevented KNN from achieving a high relative density, while Sn4+ (S⁢nNb′) was not soluble in the structure as evidenced by second phase peaks ...
Fayaz Hussain, Fayaz Hussain, Amir Khesro, Zhilun Lu, Zhilun Lu, Nouf Alotaibi, Ahmad Azmin Mohamad, Ge Wang, Dawei Wang, Di Zhou   +9 more
doaj   +4 more sources

Porous ceramics of sodium potassium niobate system

Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов
In our work, we used the finely dispersed polystyrene to produce porous samples of the piezoelectric ceramics. Samples of the sodium potassium niobate ceramics with pore concentrations of the 10, 20, 25, 30 and 40 volume percent were produced.
D.V. Mamaev, O.V. Malyshkina, A.I. Ivanova   +2 more
doaj   +2 more sources

Ultra-large electric field-induced strain in potassium sodium niobate crystals. [PDF]

Sci Adv, 2020
An ultrahigh electric field–induced strain of 0.9% (under 1 kV mm −1 ) is achieved in lead-free ferroelectric crystals.
Hu C, Meng X, Zhang MH, Tian H, Daniels JE, Tan P, Huang F, Li L, Wang K, Li JF, Lu Q, Cao W, Zhou Z.   +12 more
europepmc   +5 more sources

Hydrothermal synthesis of potassium–sodium niobate powders

Journal of the American Ceramic Society, 2022
Abstract Potassium–sodium niobates (K x Na 1− x NbO 3 , 0 <  x
Piskin, Cerem, Karacasulu, Levent, Ischia, Gloria, Bortolotti, Mauro, Vakifahmetoglu, Cekdar   +4 more
openaire   +2 more sources

PORE PERCENTAGE ESTIMATION OF PIEZOELECTRIC CERAMICS USING CCANN AND IMAGE MADE WITH SEM

Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2021
The authors synthesized samples of piezoelectric potassium sodium niobate ceramics of 10,25 and 40 pore percentage by volume. Capsule convolutional artificial neural network has been developed for estimation of the pore percentage in images.
D.V. Mamaev, S.A. Merkuryev, O.V. Malyshkina   +2 more
doaj   +1 more source

Temperature Dependent Piezoelectric Properties of Lead-Free (1-x)K0.6Na0.4NbO3–xBiFeO3 Ceramics [PDF]

, 2020
(1-x)K0.4Na0.6NbO3–xBiFeO3 lead-free piezoelectric ceramics were successfully prepared in a single perovskite phase using the conventional solid-state synthesis.
Feteira, Antonio, Hussain, Fayaz, Khesro, Amir, Muhammad, Raz, Reaney, Ian M., Wang, Dawei, Wang, Ge   +6 more
core   +3 more sources

Lead-free piezoelectric materials and ultrasonic transducers for medical imaging [PDF]

Journal of Advanced Dielectrics, 2015
Piezoelectric materials have been vastly used in ultrasonic transducers for medical imaging. In this paper, firstly, the most promising lead-free compositions with perovskite structure for medical imaging applications have been reviewed.
Elaheh Taghaddos, Mehdi Hejazi, Ahmad Safari   +2 more
doaj   +1 more source

Synergistic Anti-Cancer Therapy Through Ultrasound-Induced Piezocatalytic Therapy and Tumor Treatment Fields. [PDF]

Adv Sci (Weinh)
A novel, wearable anti‐cancer platform synergistically combines tumor treating fields (TTFs) and piezocatalytic therapy (PCT) via ultrasound‐activated, lead‐free piezocomposites. This strategy efficiently suppresses tumor growth, modulates the immune microenvironment, and demonstrates strong therapeutic synergy in both mouse model of subcutaneous tumor
Jin J, Xue H, Chen K, Su Y, Hu X, Hu X, Huang X, Jiang L, Wu J, Peng X.   +9 more
europepmc   +2 more sources

Humidity resistance and recovery of sintered sodium potassium niobate-based piezoelectrics

Open Ceramics, 2023
This study delves into the crucial impact of humidity on the microstructure, phase composition, dielectric, ferroelectric, and piezoelectric properties of sintered 0.06LiNbO3–0.94(K0.5Na0.5)NbO3 lead-free piezoelectric ceramics during storage.
Gianni Ferrero, Malgorzata K. Pierchala, Konstantin Astafiev, Erling Ringgaard, Bhaskar Reddy Sudireddy, Astri Bjørnetun Haugen   +5 more
doaj   +1 more source