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 +2 more
doaj +1 more source
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 +5 more
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Technology and Dielectric Properties of the KNLN Doped with Nd3+ and Pr3+ Ions [PDF]
Archives of Metallurgy and Materials, 2020 The paper presents the technology and basic properties of three compositions of lead-free ceramics: (i) (K0.44Na0.52Li0.04)NbO3, (ii) (K0.44Na0.52Li0.04)NbO3+0.5%mol Nd2O3 and (iii) (K0.44Na0.52Li0.04)NbO3+0.5%mol Pr2O3.
D. Bochenek +4 more
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Polymorphic phase boundary in piezoelectric oxides [PDF]
, 2020 The design of phase boundaries has now become a consolidated strategy to improve the functional properties of piezoelectric oxides because of the unique properties that may be obtained in their vicinity. In particular, polymorphic phase boundaries (PPBs)
García García, José Eduardo +1 more
core +1 more source
Processing and characterization of lead-free ceramics on the base of sodium–potassium niobate [PDF]
Journal of Advanced Dielectrics, 2018 Lead-free sodium–potassium niobate-based piezoelectric materials are most intensively studied in order to replace the widely used Pb-based ones. In this work, the effects of modification of compositions by donor and acceptor dopants in the A- and B-sites
E. D. Politova +8 more
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Sensors, 2022 Thick films with nominal composition (K0.5Na0.5)0.99Sr0.005NbO3 (KNNSr) on porous ceramics with identical nominal composition were investigated as potential candidates for environmentally benign ultrasonic transducers composed entirely of inorganic ...
Danjela Kuscer +4 more
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Molten hydroxide synthesis as an alternative to molten salt sythesis for producing K0.5Na0.5NbO3 lead free ceramics [PDF]
, 2011 Lead-free piezoelectric materials have grown in importance through increased environmental concern and subsequent EU and worldwide legislation, with the aspiration to reduce the use of Pb-based materials in all sectors. Integration of the next generation
Bortolani, Francesca +3 more
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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 +9 more
europepmc +2 more sources
Actuators, 2023 An amount of 3.0 mol% NaNbO3 seeds was used to align the grains of 0.96(Na0.5K0.5)(Nb0.93Sb0.07)O3-(0.04−x)SrZrO3-x(Bi0.5Ag0.5)ZrO3 [NKNS-(0.04−x)SZ-xBAZ] thick films (0.0 ≤ x ≤ 0.04) along the [001] direction.
Su-Hwan Go +9 more
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Nanodomain structures formation during polarization reversal in uniform electric field in strontium barium niobate single crystals [PDF]
, 2012 We have studied the ferroelectric nanodomain formation in single crystals of strontium barium niobate Sr 0.61Ba 0.39Nb 2O 6 using piezoelectric force microscopy and Raman confocal microscopy.
Ievlev, A. V. +7 more
core +1 more source