摘要:
There is provided an ultrasound transducer device 2 including a plurality of piezoelectric single-crystal plates 44a to 44f that are stacked such that polarization components thereof are alternately inverted. The plurality of piezoelectric single-crystal plates 44a to 44f are stacked such that directions thereof in which strain deformation in a direction orthogonal to a direction of voltage application from electrodes 45a, 45b respectively interposed between the plurality of piezoelectric single-crystal plates becomes largest coincide with each other. There is also provided an ultrasound medical apparatus 1 including the ultrasound transducer device 2.
摘要:
Provided are a piezoelectric device that prevents oxidation of an extremely thin piezoelectric thin film and thereby prevents damage to electrodes formed on the piezoelectric thin film by pyroelectric charge and a method for manufacturing such a piezoelectric device. A silicon oxide film (90) is deposited on a surface (12) of a single-crystal piezoelectric substrate (1) closer to an ion-implanted region (100) by sputtering, and a silicon nitride film (91) is deposited on a surface of the dielectric film (90) opposite the side thereof closer to the single-crystal piezoelectric substrate (1) by sputtering. The silicon oxide film (90) has a composition that is deficient in oxygen relative to the stoichiometric composition. Accordingly, little oxygen is supplied from the silicon oxide film (90) to the piezoelectric thin film (10) during heat treatment of a piezoelectric device (101). This prevents oxidation of the piezoelectric thin film (10) and therefore formation of an oxide layer with high resistivity in the piezoelectric thin film (10). As a result, a pyroelectric charge generated in the piezoelectric thin film (10) can flow to the silicon oxide film (90).
摘要:
Die vorliegende Erfindung betrifft ein Dielektrisches Elastomer, umfassend eine Folie, die ein fluoriertes Siliconelastomer enthält oder daraus besteht, sowie beidseitig der Folie eine Beschichtung aus einem dehnbaren Elektrodenmaterial, oder bestehend aus diesen Komponenten, dadurch gekennzeichnet, dass das fluorierte Siliconelastomer einen E-Modul von maximal 450 mPa besitzt. Dieser E-Modul kann in bevorzugter Weise dadurch erzielt werden, dass das fluorierte Siliconelastomer ein dreidimensional vernetztes fluoriertes, alkylgruppenhaltiges Polysiloxan in Kombination mit einem fluorierten Siliconöl aufweist und/oder dass das fluorierte Siliconelastomer ein dreidimensional weitmaschig vernetztes, fluoriertes, alkylgruppenhaltiges Polysiloxan aufweist, dessen Weitmaschigkeit durch eine Kettenverlängerung durch Addition eines zwei Si-H-Gruppen enthaltenden kettenförmigen Siliconmoleküls an ein Vinylgruppen enthaltendes Polysiloxanmoleküls bewirkt wurde.
摘要:
A nano-piezoelectric generator (100) includes a first electrode (120) and a second electrode (150), at least one nano-piezoelectric unit (140), formed of a semiconductor piezoelectric material having a nano-structure, disposed between the first (120)and the second electrodes (150), and an interlayer (130), formed of an insulating material, disposed between the first electrode (120) and the at least one nano-piezoelectric unit (140).
摘要:
A piezoelectric device (5) includes an elastic member (1), an electrical-mechanical energy conversion element (2) fixed to the elastic member (1), configured to cause the elastic member (1) to generate vibration, and a supporting member (3) that supports the elastic member (1). The electrical-mechanical energy conversion element (2) is formed of a piezoelectric material in which, in a usage temperature range of the piezoelectric device (5), a piezoelectric constant decreases along with temperature rise. A supporting member (3) that supports the elastic member (1) is formed of a material in which, in the usage temperature range of the piezoelectric device (5), Q value increases along with temperature rise.
摘要:
A piezoelectric material including a barium bismuth niobate-based tungsten bronze structure metal oxide having a high degree of orientation is provided. A piezoelectric element, a liquid discharge head, an ultrasonic motor, and a dust cleaning device including the piezoelectric material are also provided. A piezoelectric material includes a tungsten bronze structure metal oxide that includes metal elements which are barium, bismuth, and niobium, and tungsten. The metal elements satisfy following conditions on a molar basis: when Ba/Nb=a, 0.30≦̸a≦̸0.40, and when Bi/Nb=b, 0.012≦̸b≦̸0.084. The tungsten content on a metal basis is 0.40 to 3.00 parts by weight relative to 100 parts by weight of the tungsten bronze structure metal oxide. The tungsten bronze structure metal oxide has a c-axis orientation.
摘要翻译:提供一种压电材料,其包括具有高取向度的铌酸铋铋钨青铜结构金属氧化物。 还提供压电元件,液体排出头,超声波马达以及包括该压电材料的除尘装置。 压电材料包括包含钡,铋和铌的金属元素以及钨的钨青铜结构金属氧化物。 当Ba / Nb = a时,金属元素满足以下条件:0.30≤a≤0.40,并且当Bi / Nb = b时,0.012≤b≤0.084。 基于金属的钨含量相对于100重量份的钨青铜结构金属氧化物为0.40至3.00重量份。 钨青铜结构金属氧化物具有c轴取向。
摘要:
The present invention provides a piezoelectric device having an extremely good secular characteristic, which is a unimorph (or bimorph) element obtained by sticking to a metal plate a piezoelectric single crystal having a giant-lateral-effect piezoelectric performance of a lateral-vibration-mode electromechanical coupling factor k 31 not smaller than 70%, the unimorph (or bimorph) element having a bending-vibration-mode electromechanical coupling factor k b not smaller than 50 % (or 60 %). A plate-form single crystal 10 of PZNT or PMNT is brought into a mono-domain in its thickness direction and in its plate surface so as to be provided with the giant-lateral-effect piezoelectric characteristic, and the single crystal 10 that does not cause secular deterioration is stuck to a metal plate 20 (shim plate) while the mono-domain quality is kept as it is, as a result of which a unimorph 1 (or bimorph 2) is fabricated.
摘要:
A piezoelectric material comprises a ferroelectric perovskite complex oxide containing Bi, La, Fe, and Mn. The material can be used in a piezoelectric element, which element can be used in a liquid-ejecting head.