Sökning: "insulator"

Visar resultat 41 - 45 av 225 avhandlingar innehållade ordet insulator.

  1. 41. Integrated Nanophotonic Devices in Lithium Niobate

    Författare :Mohammad Amin Baghban; Katia Gallo; Fabrice Raineri; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Lithium niobate LN ; LN-on-insulator; photonic integrated circuits; nonlinear optics; electro-optics; waveguides; propagation losses; Bragg gratings; grating couplers; polarization-insensitive; LN for life sciences; Fysik; Physics;

    Sammanfattning : Lithium niobate (LN) is a ferroelectric crystal offering a broad transparency spectrum, together with excellent electro-optic and nonlinear optical properties. Thanks to them, LN is setting the standard for quantum optics and telecommunications in critical applications such as ultrafast modulation and frequency conversion. LÄS MER

  3. 42. Prevention of Biofilm Formation on Silicone Rubber Materials for Outdoor High Voltage Insulators

    Författare :Sevil Atari Jabarzadeh; Sigbritt Karlsson; Ferruccio Doghieri; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; High voltage insulator; silicone rubber; biofouling; biofilm; biocide; superhydrophobicity; self-cleaning; hierarchical roughness;

    Sammanfattning : Microbial colonization on the surface of silicone rubber high voltage outdoor insulators often results in the formation of highly hydrated biofilm that influence the surface properties, such as surface hydrophobicity. The loss of hydrophobicity might lead to dry band formation, and, in the worst cases, flashover and failure of the insulator. LÄS MER

  4. 43. Silicon micromachined waveguide components for terahertz systems

    Författare :Bernhard Beuerle; Joachim Oberhammer; Umer Shah; Kamal Sarabandi; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; micromachining; waveguide; terahertz; deep reactive ion etching; silicon on insulator; on-wafer characterization; InP; SiGe; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : This thesis presents silicon micromachined waveguide components for sub-terahertz and terahertz (THz) systems fabricated by deep reactive ion etching (DRIE). Historically the main driving force for the development of THz systems has been space-based scientific instruments for astrophysics, planetary and Earth science missions. LÄS MER

  5. 44. The influence of surface microroughness on wafer bonding

    Författare :Mats Bergh; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; AFM; hydrophilic; surface roughness; diamond; silicon-on-insulator; poly silicon; silicon-on-diamons; atomic force microscope; wafer bonding; SOI; aluminum nitride; hydrophobic;

    Sammanfattning : .... LÄS MER

  7. 45. Properties of buried silicon dioxide layers

    Författare :Per Ericsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; BESOI; charge tripping; radiation damage; silicon on insulator; separation by imlanted oxygen; bond and etchback SOI; SIMOX; thermal stress; SOI; charge injection;

    Sammanfattning : .... LÄS MER