Essays about: "scanning tunneling microscopy"

Showing result 21 - 25 of 36 essays containing the words scanning tunneling microscopy.

1. 21. The Influence of Oxygen on Nanowire Surface Structure and Electronic Properties

   University essay from Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

   Author : Viktor Abelin; [2015]
   Keywords : Scanning tunneling microscopy; STM; Auger electron spectroscopy; AES; nanowire; hydrogen cleaning; Physics and Astronomy;

   Abstract : This thesis investigates the possibilities for setups measuring how the surface structure of nanowires (NWs) influences their electric properties. For this the abilities to clean surfaces and detect nanowires (NWs) are examined, and an attempt to build a setup is made. READ MORE

3. 22. Formation of cobalt oxide clusters on oxygen modified graphene

   University essay from Lunds universitet/MAX IV-laboratoriet; Lunds universitet/Fysiska institutionen

   Author : Robin Schneider; [2015]
   Keywords : Graphene; Cobalt oxide; clusters; STM; XPS; LEED; moire pattern; oxygen functionalized graphene; rocksalt; spinel; Iridium; Ir 111 ; monolayer graphene; oxygen radicals; carbon; Physics and Astronomy;

   Abstract : Aim of this thesis is to study and characterize the formation of cobalt oxide clusters on graphene. The performed experiments consist of three different steps. First, a monolayer graphene film is grown with temperature programmed growth and chemical vapor deposition on an Iridium (111) single crystal surface. READ MORE

4. 23. Infuence of surface and crystal structure on the conductivity of individual InAs and InP nanowires

   University essay from Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

   Author : Lena Isabel Tamara Kral; [2015]
   Keywords : semiconducting nanowire; zinc blende; wutzite; hydrogen cleaning; STM; oxidation; photovoltaic response; photovoltaics; top contact method; InAs; nanowire; InP; Physics and Astronomy;

   Abstract : To satisfy the great need for (opto-)electronic devices to become smaller and more efficient in energy and price, research is done on semiconducting III-V nanowires (NWs). Electrical devices using NWs show noteworthy assets being fast-paced with high-speed electronics and low power consumption, one of which are high-efficient solar cells at a moderate price. READ MORE

5. 24. Scanning probe microscopy with gallium nitride nanowires

   University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Fasta tillståndets fysik

   Author : Victor Ahlinder; [2015]
   Keywords : Physics and Astronomy;

   Abstract : In scanning probe microscopy the properties of the tip is crucial in determining which information that can be obtained from the resulting images and spectroscopy. Ordinarily metal tips are used for scanning, however by using semiconducting nanowires as tips one would have very well defined probes with more advanced possibilities for spectroscopic measurements. READ MORE

6. 25. Effects of electron-electron interaction in pristine and doped graphene

   University essay from Linnéuniversitetet/Institutionen för fysik och elektroteknik (IFE)

   Author : Faluke Aikebaier; [2014]
   Keywords : ;

   Abstract : The goal of this master thesis is to investigate the eect of electron-electron interaction on electronic properties of graphene that can be measured experimentally. A tight-binding model, which includes up to next-nearest-neighbor hopping, with parameters tted to density functional theory calculations, has been used to describe the electronic structure of graphene. READ MORE