Sökning: "Scanning"

Visar resultat 1 - 5 av 1360 avhandlingar innehållade ordet Scanning.

  1. 1. Scanning probe microscopy : Applications

    Författare :Nils Almqvist; Luleå tekniska universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fysik; Fysik;

    Sammanfattning : .... LÄS MER

  3. 2. Probe fabrication for a scanning single-electron-transistor

    Författare :Henrik Brenning; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; cantilever; SET; scanning probe; scanning SET; fabrication yield; charging energy; nano fabrication;

    Sammanfattning : .... LÄS MER

  4. 3. Fabrication and Characterization of Aluminum Single Electron Transistors for Scanning Probes

    Författare :Henrik Brenning; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; radio frequency single electron transistor; scanning probe; charging energy; nano fabrication; noise; scanning SET; SET; cantilever; AFM; RC-product; micro mechanics;

    Sammanfattning : The main objective of the work presented in this thesis was to fabricatescanning single electron transistor probes that operate at pumped liquid heliumtemperatures. This required single electron transistors (SETs) with low resistance (R_) and relatively high charging energy (E_C), and the technology tointegrate SETs onto probes. LÄS MER

  5. 4. Symmetric scanning tunneling microscopes for ultra high vacuum and very low temperatures

    Författare :Per Anders Davidsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; stability; scanning; single crystal; LTTM; VLTTM; tunneling microscope; UHV; dilution refrigator; piezoelectric;

    Sammanfattning : .... LÄS MER

  7. 5. Theoretical modeling of scanning tunneling microscopy

    Författare :Alexander Gustafsson; Magnus Paulsson; Jorge Iribas Cerdá; Linnéuniversitetet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Scanning tunneling microscopy; Computational models; Quantum tunneling; Green s functions; Density functional theory; Condensed Matter Physics; Kondenserade materians fysik;

    Sammanfattning : The main body of this thesis describes how to calculate scanning tunneling microscopy (STM) images from first-principles methods. The theory is based on localized orbital density functional theory (DFT), whose limitations for large-vacuum STM models are resolved by propagating localized-basis wave functions close to the surface into the vacuum region in real space. LÄS MER