Results 11 to 20 of about 276,639 (273)
Electric-field structuring of piezoelectric composite materials [PDF]
, 1999 Piezoelectric composite materials, consisting of a ferroelectric ceramic in an electrically-inactive polymer matrix, have been shown to greatly outperform single phase materials for certain applications.
Wilson, Stephen A.
core +7 more sources
Novel piezoelectric thick film actuators [PDF]
, 2005 Planar-spiral piezoelectric-unimorph-actuators, that deflect out-of-their-plane, were modelled, designed and fabricated. A range of other planar piezoelectric-device designs has also been made.
Haigh, Richard
core +7 more sources
, 2010 This book reviews a big window of opportunity for piezoelectric ceramics, such as new materials, material combinations, structures, damages and porosity effects.
core +3 more sources
Preparation Process, Structure, and Modification of Alkali Metal Niobate Lead-Free Piezoelectric Ceramics [PDF]
Archives of Metallurgy and MaterialsPb-based piezoelectric ceramics cause serious Pb pollution during manufacturing, Pb-free niobate-based piezoelectric ceramics have strong ferroelectricity and high Curie temperatures, rendering them more suitable for making ceramics.
Ruikun Niu, Yanni Meng, Haiqiao Wang
doaj +1 more source
Control of a multi-degree of freedom worktool for vibrations assisted forging [PDF]
, 2014 This paper addresses the control of a tool developed to superimpose vibrations along several directions on a piece during forging. Piezoelectric actuators are used to provide the required forces and speeds.
AMBERG, Michel +12 more
core +1 more source
Impedance measurements for determination of elastic and piezoelectric coefficients of films [PDF]
, 2010 Most of those techniques used for the measurement of elastic coefficients for bulk piezoelectric ceramics are not applicable to films deposited on thick substrates because the measured properties, such as the resonant frequency, are usually dominated ...
Pardo, L. +5 more
core +1 more source
Apparent Reduction in the Value of the d 33 Piezoelectric Coefficient in PZT Thick Films. [PDF]
, 2002 Thick PZT films (1 - 20 m) have been prepared using a composite sol gel technique whereby PZT powder and a PZT producing sol are formed into a slurry and spin coated onto silicon wafers. The maximum relative permittivity obtained was approximately 80%
Dorey, RA +3 more
core +1 more source
Synthesis and processing of KNN powders and thick films for MEMS devices [PDF]
, 2012 Pb-free piezoelectric materials have grown in importance through increased environmental concern related to the presence of Pb and the subsequent legislation that has arisen including directives such as Waste Electrical and Electronic Equipment (WEEE ...
Lusiola, Tony
core +7 more sources
Unconventional piezoelectric coefficients in perovskite piezoelectric ceramics
Journal of Materiomics, 2021 Piezoelectric ceramics exhibit three conventional piezoelectric coefficients, i.e., d33, d31, d15, due to their ∞mm crystal symmetry. Unconventional piezoelectric coefficients, such as d11, d12, d13, d14, d16, etc., can only be extracted from ...
Jingen Wu +13 more
doaj +1 more source
The synthesis and characterisation of lead-free piezoelectric ceramics [PDF]
, 2012 With a growing awareness of the environmental and health hazards of lead, there has been renewed interest in developing lead-free alternatives to lead zirconate titanate (PZT), which currently dominates the market for piezoelectric materials. Some of the
Roberts, William Michael
core +7 more sources