Sökning: "optical characterization"

Visar resultat 21 - 25 av 384 avhandlingar innehållade orden optical characterization.

  1. 21. Dendrimers and dendronized polymers : synthesis and characterization

    Författare :Andreas Nyström; Anders Hult; A. Dieter Schlüter; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Dendrimers; dendronized polymers; atom transfer radical polymerisation; ring-opening metathesis polymerization; reversible addition-fragmentation chain transfer polymerization; 2; 2-bis methylol propionic acid; tri-block copolymers; rheology; differential scanning calorimerty; 1H-NMR self-diffusion; Polymer chemistry; Polymerkemi;

    Sammanfattning : The goal of this work was to synthesize complex macromolecular architectures such as dendrimers and dendronized polymers, and evaluate the effect from the dendrons on the optical and material properties. The work presented in this doctoral thesis, Dendrimers and Dendronized Polymers - Synthesis and Characterization, is divided into one minor and one major part. LÄS MER

  3. 22. Silicon nanowires, nanopillars and quantum dots : Fabrication and characterization

    Författare :Robert Juhasz; Jan Linnros; Philippe M. Fauchet; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Silicon nanowires; silicon nanopillars; silicon quantum dots; size-reduction; thermal oxidation; electrochemical etching of silicon; photoluminescence; Semiconductor physics; Halvledarfysik;

    Sammanfattning : Semiconductor nanotechnology is today a very well studied subject, and demonstrations of possible applications and concepts are abundant. However, well-controlled mass-fabrication on the nanoscale is still a great challenge, and the lack of nanofabrication methods that provide the combination of required fabrication precision and high throughput, limits the large-scale use of nanodevices. LÄS MER

  4. 23. Optical Mapping of Bacterial Plasmids

    Författare :Vilhelm Müller; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; competitive binding; optical mapping; fluorescence microscopy; DNA; plasmids; CRISPR Cas9; antibiotic resistance; nanofluidics; single-molecule;

    Sammanfattning : Bacteria that have acquired resistance to antibiotics represent one of the largest threats to human health and modern health care. The genes encoding resistance are frequently spread via the transfer of plasmids, which are circular double stranded DNA molecules separate from the chromosomal DNA of the bacteria. LÄS MER

  5. 24. Optical characterization of dilute nitride semiconductors and related quantum structures

    Författare :Morteza Izadifard; G. Yu. Rudko; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Dilute nitrides; optoelectronics; photonics; Optical physics; Optisk fysik;

    Sammanfattning : Dilute nitrides (i.e. LÄS MER

  7. 25. Simulation and Characterization of Silicon Carbide Power Bipolar Junction Transistors

    Författare :Benedetto Buono; Mikael Östling; Gunnar Malm; Martin Domeij; Lothar Frey; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; silicon carbide; power device; BJT; diode; simulation; characterization; current gain; on-resistance; breakdown voltage; forward voltage drop; degradation; SRA - ICT; SRA - Informations- och kommunikationsteknik;

    Sammanfattning : The superior characteristics of silicon carbide, compared with silicon, have suggested considering this material for the next generation of power semiconductor devices. Among the different power switches, the bipolar junction transistor (BJT) can provide a very low forward voltage drop, a high current capability and a fast switching speed. LÄS MER