Sökning: "W tips"

Hittade 2 avhandlingar innehållade orden W tips.

1. 1. 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

3. 2. 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