Sökning: "tungsten tips"

Hittade 5 avhandlingar innehållade orden tungsten tips.

  1. 1. STM studies of charge density waves

    Författare :Inger Ekvall; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; tungsten tips; transition metal dichalcogenides; charge density waves; scanning tunneling microscopy spectroscopy;

    Sammanfattning : .... LÄS MER

  3. 2. The Cu(111) surface studied by scanning tunnelling microscopy and spectroscopy

    Författare :Erik Wahlström; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Cu 111 ; surface states; tungsten tips; scanning tunneling spectroscopy; scanning tunneling microscopy; adsorbate interaction;

    Sammanfattning : .... LÄS MER

  4. 3. Charge Density Waves and Alkali Metal Intercalation in Layered Materials

    Författare :Inger Ekvall; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; charge density waves; STM STS; W tips; alkali metal intercalation;

    Sammanfattning : In this thesis the following issues are discussed: 1. Fundamental properties of two polytypes of TaS2 studied by scanning tunneling microscopy (STM) and spectroscopy (STS). 2. The influence of Na intercalation on charge density waves (CDW's) in 1T-VSe2 and 4Hb-TaS2 studied by STM and STS. LÄS MER

  5. 4. On failure modelling in finite element analysis : material imperfections and element erosion

    Författare :Mattias Unosson; Larsgunnar Nilsson; Kjell Simonsson; Lars Olovsson; Anders Eriksson; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; finite element method; element erosion; material failure; material imperfections; crack-tip; Solid mechanics; Fastkroppsmekanik;

    Sammanfattning : This dissertation concerns failure modelling with material imperfections and element erosion in finite element analyses. The aim has been to improve the element erosion technique, which is simple to use and implement and also computationally inexpensive. LÄS MER

  7. 5. Atomically Resolved ac-Mode Atomic Force Microscopy in Ultra-High Vacuum

    Författare :Lars Olsson; Franz Giessibl; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : When the atomic force microscope (AFM) was invented in 1986, it was anticipated that the technique should be able to produce atomically resolved images with aquality similar to what was routinely obtained with the scanning tunnelling microscope (STM). Even though the AFM quickly became a very popular technique, the development toward ultra-high resolution imaging turned out to be slow due to problems of both fundamental and technical nature. LÄS MER