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PTCa/PEEK composite acoustic emission sensors
(2006-10-01)
Composites made of Calcium-modified lead titanate (PTCa) and poly (ether-etherketone) (PEEK) high performance polymer matrix were prepared in the film form using a hot press. The ceramic volume fraction reaches up to 60 ...
Broadband dielectric characterization of piezoelectric poly(vinylidene fluoride)thin films between 278 K and 308 K
(Elsevier, 2013-07)
This work describes the dielectric properties of piezoelectric poly(vinylidene fluoride) (PVDF) thin films in the frequency and temperature ranges relevant for usual applications. We measured the isothermal dielectric ...
Impact of oxygen atmosphere on piezoelectric properties of CaBi2Nb2O9 thin films
(Elsevier B.V., 2007-08-01)
CaBi2Nb2O9 (CBNO) thin films were deposited on platinum-coated silicon substrates by the polymeric precursor method, and were annealed in air and in an oxygen atmosphere. The structure, surface morphology and electrical ...
Impact of oxygen atmosphere on piezoelectric properties of CaBi2Nb2O9 thin films
(Elsevier B.V., 2014)
Piezoelectric composite oscillator for measuring mechanical spectroscopy in small samples that non-match in half wavelength
(IOP Publishing, 2016-01)
A novel piezoelectric device for measuring mechanical spectroscopy as a function of temperature and strain has been developed. The new equipment involves five oscillating elements, a crystal driver, two spacer bars, the ...
Morphotropic phase boundary and electrical properties of 1-x[Bi 0.5Na0.5]TiO3 -xBa[Zr0.25Ti 0.75]O3 lead-free piezoelectric ceramics
(2013-07-01)
Lead-free solid solutions (1-x)Bi0.5Na0.5TiO 3 (BNT)-xBaZr0.25Ti0.75O3 (BZT) (x=0, 0.01, 0.03, 0.05, and 0.07) were prepared by the solid state reaction method. X-ray diffraction (XRD) and Rietveld refinement analyses of ...
Influence of B-site compositional homogeneity on properties of (K0.44Na0.52Li0.04)(Nb0.86Ta0.10Sb0.04)O3-based piezoelectric ceramics
(Elsevier, 2014-03-05)
The effect of B-site compositional homogeneity on microstructure, piezoelectric properties and dielectric behaviour of lead-free piezoelectric ceramics, (K0.44Na0.52Li0.04) (Nb0.86Ta0.10Sb0.04)O3, is investigated. The ...
Reducing the capacitance of piezoelectric film sensors
(American Institute of Physics, 2016-04)
We present a novel design for large area, wideband, polymer piezoelectric sensor with low capacitance. The large area allows better spatial resolution in applications such as photoacoustic tomography and the reduced ...