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Piezo and pyroelectric radiation dosimetry
(1992-08-01)
The authors review the use of photoacoustic and pyroelectric radiation dosimeters. They compare the characteristics and results obtained with a photoacoustic radiation dosimeter (PARD) and a pyroelectric radiation dosimeter ...
Voltage responsivity of pyroelectric sensor
(Elsevier B.V., 1999-09-28)
Composites polymer-ceramic using castor oil-based polyurethane (PU) as non-ferroelectric matrix and Lead Zirconate Titanate (PZT) as ceramic powder have been prepared at thin films form by spin coating. The samples are ...
The Application of Pyroelectric Sensors in the Measurementof X-Ray Intensity and Ultrasonic Transducer Output Power: a Review
(2022-06-01)
The biological effects of the signals produced by X-ray and ultrasound equipment strongly depend on their intensity. Some articles were published addressing the use of pyroelectric sensors to measure the intensity of X-rays ...
Thermodynamic modeling of pyroelectric and piezoelectric properties of cellular polymers
(AMER PHYSICAL SOC, 2008)
A thermodynamic approach is presented to model devices manufactured with cellular polymers. They are heterogeneous nonpolar space-charge electrets that exhibit much higher piezoelectricity than the well-known ferroelectric ...
Dielectric and pyroelectric properties of a composite of ferroelectric ceramic and polyurethane
(Springer, 2002-05-01)
Flexible piezo- and pyroelectric composite was made in the thin film form by spin coating. Lead Zirconate Titanate (PZT) ceramic powder was dispersed in a castor oil-based polyurethane (PU) matrix, providing a composite ...
Pyroelectric composite film for X-ray intensity detection
(ABM, ABC, ABPol, 2012-04-01)
Composite material obtained with modified lead titanate (Pz34) ferroelectric ceramic and polyether-ether-ketone (PEEK) polymer matrix was used as sensitive component to measure X-ray intensity in a novel detection system. ...
Electrical properties of a composite of Polyurethane and ferroelectric ceramics
(1998-12-01)
Ferroelectric ceramic particles based on lead titanate zirconate (PZT) were dispersed in a polymer matrix based on castor oil. After the poling process, the pyroelectric activity of this composite was measured using a ...
Study of pyroelectric activity of PZT/PVDF-HFP composite
(ABM, ABC, ABPol, 2003-12)
Flexible, free-standing piezo and pyroelectric composite with 0 to 3 connectivity was made up from Lead Zirconate Titanate (PZT) powder and poly(vinylidene fluoride-hexafluoropropylene) (PVDF-HFP) copolymer. The pyroelectric ...
Phase change and pyroelectricity in natural hemimorphite
(TAYLOR & FRANCIS LTD, 2009)
The phase change of a natural hemimorphite sample from Minas Gerais (Brazil) was investigated by two X-ray diffraction (XRD) methods and by near-infrared reflectance spectroscopy. Applying successive thermal treatments, ...
Microcontrolled pyro-electric instrument for measuring X-ray intensity in mammography
(2005-12-01)
A novel instrument for measurement of X-ray intensity from mammography consists of a sensitive pyro-electric detector, a high-sensitivity, low-noise current-to-voltage converter, a microcontroller and a digital display. ...