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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

Analysis of tapered-thickness piezoelectric ceramics for ultrasonic transducers

Barthe, Peter Girard 05 1900 (has links)
No description available.

Modeling the rosen type piezoelectric transformer for powerconverters

Fung, Sze-wei., 馮時維. January 2004 (has links)
published_or_final_version / abstract / Electrical and Electronic Engineering / Master / Master of Philosophy

Effects of biasing fields on piezoelectric resonators

Yang, Xiaomeng. January 1900 (has links)
Thesis (Ph.D.)--University of Nebraska-Lincoln, 2007. / Title from title screen (site viewed Dec. 5, 2007). PDF text: XI, 201 p. : ill. ; 7 Mb. UMI publication number: AAT 3271928. Includes bibliographical references. Also available in microfilm and microfiche formats.

Stress Analysis of Piezoelectric Circular Plates

Hung, Ching-chieh 12 February 2009 (has links)
A finite element is formulated to analyze the deflection and stresses of circular and annular piezoelectric plates underloading of applied electrical potential. The element is based on linear piezoelasticity with displacement field and electrical potential properly assumed. To obtain more accurate nodal stresses , stress recovery is applied which derive nodal stresses from the theoretically accurate stresses at Gaussin points by the least square method. Typical example in the literature are solved by the present method , comparisons are made with those by other methods and experiments to test the validity and accuracy of the present method.

Effects of compositional modifiers on the piezoelectric properties of a commercial lead-zirconate-titanate body

Roberts, Bruce Edward 05 1900 (has links)
No description available.

On electrical equalization of piezoelectric transducers to obtain optimal power transfer and short acoustic bursts.

Augustine, Larry Joseph. January 1979 (has links)
Thesis--University of Washington.

Modeling the rosen type piezoelectric transformer for power converters

Fung, Sze-wei. January 2004 (has links)
Thesis (M. Phil.)--University of Hong Kong, 2005. / Title proper from title frame. Also available in printed format.

Defect-Engineered Two-Dimensional Transition Metal Dichalcogenides for High-Efficient Piezoelectric Sensor / Defect-Engineered 2-Dimensional Transition Metal Dichalcogenides for High-Efficient Piezoelectric Sensor

Kim, Junyoung 05 1900 (has links)
Piezoelectricity in two-dimensional (2D) transition metal dichalcogenides (TMDs) has attracted significant attention due to their unique crystal structure and the lack of inversion centers when the bulk TMDs thin down to monolayer. Although the piezoelectricity effect in atomic-thickness TMDs has been demonstrated, they are not scalable. Herein, we demonstrate a piezoelectric effect from large-scale, sputtered MoS2 and WS2 using a robust defect-engineering based on the thermal-solvent annealing and solvent immersion process. This yields a higher piezoelectric output over 20 times after annealing or solvent immersion. Indeed, the piezoelectric responses are strengthened with the increases of defect density. Moreover, the MoS2 or WS2 piezoelectric device array shows an exceptional piezoelectric sensitivity with a high-level uniformity and excellent environmental stability under ambient conditions. A detailed study of the sulfur vacancy-dependent property and its resultant asymmetric structure-induced piezoelectricity is reported. The proposed approach is scalable and can produce advanced materials for flexible piezoelectric devices to be used in emerging bioinspired robotics and biomedical applications.

Distributed piezoelectric actuator with complex shape /

Qiu, Yan. January 1900 (has links)
Thesis (MTech (Mechanical Engineering))--Peninsula Technikon, 2002. / Word processed copy. Summary in English. Includes bibliographical references (leaves 81-83). Also available online.

Synthesis, structure and properties of high piezo-and ferroelectric complex perovskite systems /

Bing, Yonghong. January 2005 (has links)
Thesis (Ph.D.) - Simon Fraser University, 2005. / Theses (Dept. of Chemistry) / Simon Fraser University.

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