Search for dissertations about: "dielectric barrier"

Showing result 6 - 10 of 22 swedish dissertations containing the words dielectric barrier.

  2. 6. Carbon Nanotube Transistors: Nanotube Growth, Contact Properties and Novel Devices

    Author : Johannes Svensson; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Carbon nanotube; chemical vapour deposition; Field effect transistor; Marangoni convection; Schottky barrier;

    Abstract : Carbon nanotubes (CNTs) are envisioned to be used as the basic building blocks in future electronics due to their excellent electronic properties such as high mobility, compatibility with high-k dielectrics and small diameters resulting in advantageous electrostatics. This thesis is divided into three separate topics related to increasing the fabrication yield and performance of CNT field effect transistors (CNTFETs). READ MORE

  4. 7. Design, Fabrication and Characterization of GaN HEMTs for Power Switching Applications

    Author : Björn Hult; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; DCIT; SCE; high voltage; isolation; ‘buffer-free’; gate dielectric; GaN HEMT; passivation; DIBL;

    Abstract : The unique properties of the III-nitride heterostructure, consisting of gallium nitride (GaN), aluminium nitride (AlN) and their ternary compounds (e.g. AlGaN, InAlN), allow for the fabrication of high electron mobility transistors (HEMTs). READ MORE

  5. 8. Step Edge Junctions in YBa2Cu3O7-δ High-Tc Superconductors

    Author : Huai-ren Yi; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; YBa2Cu3O7-delta; barrier property; Josephson flux-flow transistor; laser deposition; electron-beam lithography; magnetron sputtering; thin film; step edge junction; amorphous carbon;

    Abstract : This thesis describes experimental work on GdBa2Cu3O7-.delta. (GBCO) thin films, YBa2Cu3O7-.delta. READ MORE

  6. 9. Electrical impedance related to experimental induced changes of human skin and oral mucosa

    Author : Ingrid Nicander; Karolinska Institutet; Karolinska Institutet; []
    Keywords : bioengineering; dielectric properties; electrical impedance; irritation; non-invasive; oral mucosa; skin; skin barrier; stratum comeum; stratum corneum lipids;

    Abstract : There is a need for an objective and non-invasive method for assessing reactions in the human skin and oral mucosa, particularly for weak reactions. During the past few decades, several methods of measuring irritant responses have indeed been developed for the skin and to some extent also for the oral mucosa. READ MORE

  7. 10. Graphene Hot-electron Transistors

    Author : Sam Vaziri; Mikael Östling; Max Lemme; Suman Datta; KTH; []
    Keywords : Graphene; hot-electron transistors; graphene base transistors; GBT; cross-plane carrier transport; tunneling; ballistic transport; heterojunction transistors; graphene integration; graphene transfer; Informations- och kommunikationsteknik; Information and Communication Technology;

    Abstract : Graphene base transistors (GBTs) have been, recently, proposed to overcome the intrinsic limitations of the graphene field effect transistors (GFETs) and exploit the graphene unique properties in high frequency (HF) applications. These devices utilize single layer graphene as the base material in the vertical hot-electron transistors. READ MORE