Results 301 to 310 of about 434,856 (330)
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Ultrasonic transducers using PVDF
Ferroelectrics, 1991In a research program on ultrasonic transducers. PVDF has been used for structures needing thinness, flexibility and low acoustic impedance. The specific applications described include focused conical transducers for NDT, array transducers for medical holographic B-scan imaging and transmitters/ receivers for zetapotential measurements in colloidal ...
Jussila, Salme +7 more
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PVDF PYROELECTRIC ARRAY OF SENSORS
Sensors and Microsystems, 2001Pyroelectric array of sensors can be fabricated with different materials and technologies according to their applications. For example, high resolution matrix arrays for uncooled IR video cameras are fabricated with pyroelectric materials that can be deposited on a silicon substrate with thin film deposition techniques in order to be integrated with ...
CAPINERI, LORENZO +2 more
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ECS Meeting Abstracts, 2015
Blends and composites of various perfluoroionomers and uncharged polymers, e.g., poly(vinylidene fluoride) (PVDF), have been widely studied as the proton conducting membrane material for direct methanol and hydrogen/air fuel cells. The general idea of blending was to decouple the mechanical and swelling properties of a membrane from its proton ...
Dos Santos, L. +8 more
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Blends and composites of various perfluoroionomers and uncharged polymers, e.g., poly(vinylidene fluoride) (PVDF), have been widely studied as the proton conducting membrane material for direct methanol and hydrogen/air fuel cells. The general idea of blending was to decouple the mechanical and swelling properties of a membrane from its proton ...
Dos Santos, L. +8 more
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IEEE Transactions on Biomedical Engineering, 2015
Nanostructures of polyvinyledenedifluoride-tetrafluoroethylene (PVDF-TrFE), a semicrystalline polymer with high piezoelectricity, results in significant enhancement of crystallinity and better device performance as sensors, actuators, and energy harvesters.
Tushar, Sharma +4 more
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Nanostructures of polyvinyledenedifluoride-tetrafluoroethylene (PVDF-TrFE), a semicrystalline polymer with high piezoelectricity, results in significant enhancement of crystallinity and better device performance as sensors, actuators, and energy harvesters.
Tushar, Sharma +4 more
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Piezoelectricity of PVDF/PUE, PVDF/PMMA and PVDF/(PMMA+BaTiO/sub 3/) laminates
[1991 Proceedings] 7th International Symposium on Electrets (ISE 7), 1992The author suggests the preparation of piezoelectric laminates using PVDF (polyvinylidene fluoride) polymer film (a), polyester urethane elastomer (PUE) film (b), PMMA (polymethyl methacrylate) film (c), and (PMMA+BaTiO/sub 3/) composite film (d).
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2020
Multiferroic materials-able to show a good magnetoelectric effect-have been subjected to increasing research in recent years because of the possibility to combine electric and magnetic properties at the same time in the same material. Two kinds of multiferroic materials exist, single-phase and composite materials.
Altomare, Aldo +2 more
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Multiferroic materials-able to show a good magnetoelectric effect-have been subjected to increasing research in recent years because of the possibility to combine electric and magnetic properties at the same time in the same material. Two kinds of multiferroic materials exist, single-phase and composite materials.
Altomare, Aldo +2 more
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Quasi-Spherical PVDF Ultrasonic Transducer With Double-Cylindrical PVDF Structure
IEEE Sensors Journal, 2020In this paper, a quasi-spherical PVDF airborne ultrasonic transducer for three-dimensional (3D) ultrasonic location systems is designed and fabricated using two strips of cylindrical PVDF film. The 3D solid model of the transducer was created and the acoustic directivity pattern of the transducer was simulated using the finite-element method and the ...
Jian Chen +3 more
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Proceedings of the 6th International Conference on Properties and Applications of Dielectric Materials (Cat. No.00CH36347), 2002
The authors report the development of a manufacturing technology leading to a simple and efficient method of endowing PVDF polymer with oriented structure by means of drawing dies. The thermal conditions of orientation processing have been optimized to obtain a high beta phase content.
B. Mazurek, S. Rozecki, D. Kowalczyk
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The authors report the development of a manufacturing technology leading to a simple and efficient method of endowing PVDF polymer with oriented structure by means of drawing dies. The thermal conditions of orientation processing have been optimized to obtain a high beta phase content.
B. Mazurek, S. Rozecki, D. Kowalczyk
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ACS Applied Materials & Interfaces, 2015
The exploitation of soft conducting polymer-based actuators suffers from two main shortcomings: their short life cycle and the reproducibility of the fabrication techniques. The short life cycle usually results from the delamination of the components due to stresses at the interface during the actuation. In this work, to achieve strong adhesion to poly(
Simaite, Aiva +3 more
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The exploitation of soft conducting polymer-based actuators suffers from two main shortcomings: their short life cycle and the reproducibility of the fabrication techniques. The short life cycle usually results from the delamination of the components due to stresses at the interface during the actuation. In this work, to achieve strong adhesion to poly(
Simaite, Aiva +3 more
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NDT & E International, 1992
Three types of contact probes are discussed in this research. The probes investigated were a focussing angle beam probe, a normal incidence probe and an acoustic emission probe. Some characteristics of PVDF foils for probe design are also dealt with. A probe design program was used to calculate two types of probes in order to determine the properties ...
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Three types of contact probes are discussed in this research. The probes investigated were a focussing angle beam probe, a normal incidence probe and an acoustic emission probe. Some characteristics of PVDF foils for probe design are also dealt with. A probe design program was used to calculate two types of probes in order to determine the properties ...
openaire +5 more sources