Sökning: "7 nm"

Visar resultat 1 - 5 av 368 avhandlingar innehållade orden 7 nm.

  1. 1. Block Copolymer Nanolithography for Sub-50 nm Structure Applications

    Författare :Anette Löfstrand; NanoLund: Centre for Nanoscience; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Sampolymer; riktad självorganisation; ytrekonstruktion; mönsteröverföring; sekventiell infiltrationssyntes; neutronreflektometri; Block copolymer; Directed self-assembly; Surface reconstruction; Pattern transfer; Sequential infiltration synthesis; Neutron reflectometry; Fysicumarkivet A:2021:Löfstrand;

    Sammanfattning : As high technology device patterns are continuing to move towards decreasing critical dimensions and increasing pattern density, there is a need for lithography to move in the same direction. Block copolymer (BCP) lithography is a promising technique, which has single digit nanometer resolution, has a pattern periodicity of about 7-200 nm, and easily scales up to large area at a low cost. LÄS MER

  3. 2. Strategies for cellulose fiber modification

    Författare :Per Persson; KTH; []
    Nyckelord :Candida antarctica lipase B; cationic catalysis; cellulose-binding module; dendrimer; enzymatic polymerization; fiber modification; silica-cast replica; sol-gel mineralization; organocatalysis; xyloglucan endotransglycosylase;

    Sammanfattning : This thesis describes strategies for and examples ofcellulose fiber modification.The ability of an engineered biocatalyst, acellulose-binding module fused to theCandida antarcticalipase B, to catalyze ring-openingpolymerization of e-caprolactone in close proximity tocellulose fiber surfaces was explored. LÄS MER

  4. 3. InP-based photonic crystals : Processing, Material properties and Dispersion effects

    Författare :Audrey Berrier; Srinivasan Anand; Alfred Forchel; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Photonic crystals; indium phosphide; photonic bandgap; Bloch modes; slow light; dispersion; coupled cavity waveguides; chemically assisted ion beam etching; lag effect; cavities; optical losses; carrier transport; carrier lifetimes; negative refraction; photonic bandstructure; Physics; Fysik;

    Sammanfattning : Photonic crystals (PhCs) are periodic dielectric structures that exhibit a photonic bandgap, i.e., a range of wavelength for which light propagation is forbidden. The special band structure related dispersion properties offer a realm of novel functionalities and interesting physical phenomena. LÄS MER

  5. 4. Integration of epitaxial SiGe(C) layers in advanced CMOS devices

    Författare :Julius Hållstedt; Henry Radamson; Eugene A. Fitzgerald; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Silicon Germanium Carbon SiGeC ; Chemical Vapor Deposition CVD ; Epitaxy; Pattern Dependency; MOSFET; Mobility; Spacer Gate Technology; Semiconductor physics; Halvledarfysik;

    Sammanfattning : Heteroepitaxial SiGe(C) layers have attracted immense attention as a material for performance boost in state of the art electronic devices during recent years. Alloying silicon with germanium and carbon add exclusive opportunities for strain and bandgap engineering. LÄS MER

  7. 5. Tailored adhesion of PISA-latexes for cellulose modification and new materials

    Författare :Joakim Engström; Eva Malmström; Robert Pelton; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; PISA; latex; RAFT; Cellulose Nanofibrils; Cellulose Nanocrystals; Nanocomposites; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Sammanfattning : This thesis is focused on applying modification chemistry to already known cellulosic substrates from wood (i.e. cellulose nanofibrils, CNFs, and cellulose nanocrystals, CNCs). LÄS MER