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Showing 1 to 20 of 40 for “"Lead Zirconate Titanate (PZT)"”.
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Residual Stress Development and Effect on the Piezoelectric Performance of Sol -Gel Derived Lead Zirconate Titanate (Pzt) Thin Films
Additionally two patterning methods, traditional chemical wet-etching and a novel soft lithographic technique, are explored as a means to reduce residual stress within film features. For the soft lithographic technique, film features are created by selective film cracking, a result of poor …
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New perspectives of pure and lanthanum modified lead zirconate titanate crystalline solutions
… were found in the rhombohedral phase field of lead zirconate titanate (PZT). A hierarchy of domain structure was observed in the high temperature rhombohedral ferroelectric (FE) state, where local octahedral tilt domains on the scale of $\sim$50 A existed within the normal FE micron-sized …
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Evolution of local structure and stress development during thermal treatment of sol-gel-derived PZT-based thin layers
… for sol-gel derived precursors in the lead zirconate titanate (PZT) system as a function of heat treatment conditions.
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Direct printing of lead zirconate titanate thin films
Thus far, use of lead zirconate titanate (PZT) in MEMS has been limited due to the lack of process compatibility with existing MEMS manufacturing techniques. Direct printing of thin films eliminates the need for photolithographic patterning and etching, as well as allows for controlled deposition …
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Degradation in lead zirconate titanate thin film capacitors for non-volatile memory applications
… the degradation of ferroelectric properties in Lead Zirconate Titanate (PZT) thin film capacitors is presented in this work. Metal- Ferroelectric - Metal capacitors were prepared by sputtering and metal organic decomposition (MOD) techniques. Samples with several different film thicknesses were …
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An electromechanical system for characterization of piezoelectric materials
… materials, Polyvinylidene Fluoride (PVDF) and Lead Zirconate Titanate (PZT), are used as samples in this project to demonstrate the device operation. In addition, a non-piezoelectric material is included as a control group.
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Structure-property relationships and phase stability in the tin-modified lead zirconate titanate crystalline solution series
… characteristics of high zirconium content lead zirconate titanate (PZT) ceramics. First, microstructural studies were done as a function of titanium content. An incommensurate phase was observed across much of the compositional range and was defined by the appearance of superlattice …
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Design and fabrication of a piezoelectric stack actuator for use in a needle-free jet injector
… methods used in order to fabricate functional lead zirconate titanate (PZT) piezoelectric ceramic discs. These discs are the basic building blocks for assembling a full stack actuator for NFJI.
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Design and modeling of a PZT thin film based piezoelectric micromachined ultrasonic transducer (PMUT)
… on the piezoelectric thin film deposition of lead zirconate titanate (PZT) is defined. Through high frequency vibration (1-16MHz) of a thin plate, the PMUT transmits and receives pressure pulses to construct medical ultrasound images as an alternative to bulk piezoelectric transducers …
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Optimization of PZT processing using thermal ink-jet printing
Lead zirconate titanate (PZT) has been known for its strong piezoelectric property for micro-sensors and actuators. Yet, its use in MEMS has been constrained by limitations in processing PZT with current MEMS fabrication technology. The direct printing of PZT, in place of traditional manufacturing …
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Microfabrication and electrical characterization of lead-free sodium potassium niobate thin film ribbons on conformal substrates
… and disposal of the predominantly used leaded piezoelectric ceramic- Lead Zirconate Titanate (PZT). The European Union has initiated restricting the use of lead in commercial products, with countries such as China and Japan. These regulations provide further motivation for the …
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Design, fabrication and characterisation of free-standing thick-film piezoelectric cantilevers for energy harvesting
… electrodes sandwiching a laminar layer of lead zirconate titanate (PZT). An extended version of this unimorph, in the form of multimorph was fabricated to improve the electrical output performance, by increasing the distance of the piezoelectric layer from the neutral axis of the structure. …
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Fabrication of porous ceramics and composites by a novel freeze casting process
… powder was of great significance, which can lead to engulfment and phase segregation. BaTiO\(_3\) and Lead zirconate titanate (PZT) were employed to demonstrate the application of the freeze casting technique. BaTiO\(_3\)-epoxy composites exhibited modest piezoelectric constant but the …
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Flexible Strain Detection Using Surface Acoustic Waves: Fabrication and Tests
… fluoride (PVDF) as a polymer matrix, with lead zirconate titanate (PZT), calcium copper titanate (CCTO), and carbon nanotubes (CNTs) as micro and nanofillers’ structural, thermal and electrical properties are investigated. Piezoelectric property measurements are carried out for different …
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Annealing studies of detector materials for uncooled thermal imaging
… elements are machined from bulk ceramic, either lead zirconate titanate (PZT) or lead scandium tantalate (PST), and then flip-chip bonded to a readout IC (ROIC). Since this is equipment and labour intensive, detectors are expensive to produce and, in addition, the detector structures used limit …
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Piezoelectric micro-machined ultrasonic transducers for medical imaging
… the first half of this work, a transverse mode, lead zirconate titanate (PZT) pMUT plate cell is fabricated using common micro-fabrication techniques and a PZT sol-gel deposition process. Through derivation using a novel Greens function solution technique, an equivalent circuit model with …
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Low-Temperature Densification of Lead Zirconate Titanate With Vanadium Pentoxide Additions
The addition of 0.1 to 6.0 w/o V(,2)O(,5) to lead zirconate titanate (PZT) ceramics promoted rapid densification below 975(DEGREES)C, thereby eliminating the need for PbO atmosphere control. The base PZT, Pb (Zr(,0.53)Ti(,0.47))O(,3), was prepared by coprecipitation from mixed oxides and butoxides. …
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Microtransfer printing of elastomeric active composites
… a 4x4 array of individual, active stamps with a Lead Zirconate Titanate (PZT) actuator was developed to enable high throughput micro-transfer printing. This was achieved by introducing a multiplexed interconnection scheme as well as increasing robustness of the involved fabrication steps, …
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Highly Efficient Thermal Ablation of Silicon and Ablation in Other Materials
… of high intensity nonlinear ablation leads to more precise cuts but at a much higher, often restrictive, cost. The work here shows that by combining an imaging technique frequently used in ophthalmology called optical coherence tomography (OCT) with a machining platform, in situ …
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