Search for dissertations about: "piezoelectric effect"

Showing result 21 - 25 of 41 swedish dissertations containing the words piezoelectric effect.

  2. 21. Computational studies of Poly(vinylidene fluoride) and Poly(vinylidene fluoride) - Single Wall Carbon Nanotube Composites

    Author : Martin Bohlén; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Molecular modeling; Carbon nanotubes; Poly vinylidene fluoride ;

    Abstract : Poly(vinylidene fluoride) (PVDF) exhibits properties that allows the material to be used in such diverse areas as wire and cable products, electronic devices, membranes, exterior coatings for constructions and in the chemical, pharmaceutical and food industry as fluid-handling equipment. It is the inherent molecular structure of PVDF, where every second backbone carbon is bonded to two fluorine atoms, that gives the polymer several unique properties, among them piezo- and pyroelectricity. READ MORE

  4. 22. Preparation of Functional Oxide Perovskites: A Study on the Growth-Microstructure-Property Relationships of(N a,K)NbOx Thin Films

    Author : Veronika Mozhdeh Kugler; S. Ismat Shah; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Sodium-potassium niobate is a material with ferroelectric and piezoelectric properties that has been known since 1954. Recently, perovskite structured ferroelectric thin films have gained a lot of attention due to their wide area of potential applications, including non-volatile memories, infrared sensors, optical switches, and ultrasonic transducers. READ MORE

  5. 23. Structural and elastic properties of InN and InAlN with different surface orientations and doping

    Author : Mengyao Xie; Vanya Darakchieva; Jens Birch; Enrique Calleja; Linköpings universitet; []
    Keywords : ;

    Abstract : Group–III nitrides, InN, GaN, AlN, and their alloys, have revolutionized solid state lighting and continue to attract substantial research interest due to their unique properties and importance for optoelectronics and electronics. Among the group–III nitrides, InN has the lowest effective electron mass and the highest electron mobility, which makes it suitable for high–frequency and high power devices. READ MORE

  6. 24. Fabrication of Electroacoustic Devices for Integrated Applications

    Author : Johannes Enlund; Ilia Katardjiev; Jörgen Olsson; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering physics; Teknisk fysik; Elektronik; Electronics;

    Abstract : Electroacoustic technology has in many ways revolutionised the wireless telecommunication industry. The IC compatible fabrication technique of thin film electroacoustic devices has so far provided a considerable increase in device performance and reduction in size. At the moment, new areas where this technology can be of use is under investigation. READ MORE

  7. 25. Nonlinear Optical Materials Structural Studies of Alkali Titanium Phosphates

    Author : Stefan Norberg; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; nonlinear optical materials; alkali titanium phosphates; phase transition; alkaline cation shifts; rare-earth langbeinites; doped KTP isostructures;

    Abstract : Crystals are beautiful, not only as pieces of jewellery, but also for their intrinsic properties, which are of significant scientific and technological importance. Ferroelectric materials are extremely versatile, since they may be combined with piezoelectric or electrooptic devices for use as filters, oscillators, memories, light detectors, and displays. READ MORE