Search for dissertations about: "Pulsed laser deposition"

Showing result 21 - 25 of 38 swedish dissertations containing the words Pulsed laser deposition.

  2. 21. Switchable and tunable bulk acoustic wave resonators based on BaxSr1-xTiO3 thin films

    Author : John Berge; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Ferroelectric thin films; field induced piezoelectric effect.; tunable microwave devices; bulk acoustic wave devices; piezoelectric resonators;

    Abstract : The main focus of this thesis is the study of a novel microwave component, the tunable thin film bulk acoustic wave resonator (TFBAR), based on ferroelectric BaxSr1-xTiO3 thin films. Conventional fixed frequency TFBARs, widely used for filtering applications in wireless communication systems, are based on ordinary piezoelectrics. READ MORE

  4. 22. Functionalized epitaxial graphene as versatile platform for air quality sensors

    Author : Marius Rodner; Jens Eriksson; Andreas Schütze; Anton Köck; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : The work presented in this thesis focuses on epitaxial graphene on SiC as a platform for air quality sensors. Several approaches have been tested and evaluated to increase the sensitivity, selectivity, speed of response and stability of the sensors. READ MORE

  5. 23. On ferromagnetic thin films and two-dimensional magneto-optic photonic crystals

    Author : Amir A. Jalali Roudsar; Ari Friberg; Ilkka Tittonen; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physics; photonic crystals; physics; Fysik; Physics; Fysik;

    Abstract : This thesis presents results in two different neighboring areas of research: the magnetic properties of thin ferrite films and the application of the films in two-dimensional photonic crystals.In the first part, we investigate the accuracy of the customary method for determining the magnetic anisotropy constants of ferrite films by ferromagnetic resonance (FMR) experiment. READ MORE

  6. 24. Towards a versatile gas sensing platform with epitaxial graphene

    Author : Marius Rodner; Jens Eriksson; Kajsa Uvdal; Roland Pohle; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : The work presented in this thesis focuses on how to utilize epitaxially grown graphene on SiC as a basis for ultra-sensitive gas sensor. Several approaches have been tested and evaluated to increase the sensitivity, selectivity, speed of response and stability and of the graphene based gas sensors with a focus on air quality monitoring applications. READ MORE

  7. 25. Quantitative Spectroscopy of Gas Phase Reactions at Elevated Temperatures

    Author : Joachim Walewski; Förbränningsfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; fluiddynamik; Gaser; plasma; Maskinteknik; vibration and acoustic engineering; vacuum technology; hydraulics; vibrationer; vakuumteknik; statistical inference; Mechanical engineering; polarisation spectroscopy; diamond CVD; quantitative spectroscopy; hydraulik; gas phase kinetics; plasmas; fluid dynamics; Gases; Fysik; akustik; Physics; Fysicumarkivet A:2001:Walewski;

    Abstract : Gas phase reactions at elevated temperatures are versatile tools for material manufacturing and energy conversion. They are of great commercial interest, but they often entail hazardous impacts on the environment. There is consequently a pronounced need for the further develpment of processes utilising these types of reactions. READ MORE