EDISS - Building a 300mK-17T-UHV scanning tunnelling.

The principal focus of this thesis is on the development, construction and testing of a 300mK ultra high vacuum (UHV) scanning tunneling microscope (STM), with the purpose of investigating the properties of an electron system prepared in UHV with high spatial and energy resolution. The temperature range of the STM extends from.

Local probing and manipulation of molecules and nanoscale.

Dissertation: Keyword: gallium nitride, indium gallium nitride, quantum dots, scanning tunneling microscopy, scanning tunneling spectroscopy: Abstract: Optoelectronic devices based on gallium nitride (GaN) and indium gallium nitride (InGaN) are in the focus of research since more than 20 years and still have great potential for optical applications. In the first part of this work non-polar.Abstract of doctoral thesis Abstract of doctoral thesis During the catalyzed oxidation of hydrogen on a Pt(111) surface, reaction fronts develop below the desorption temperature of water (170 K). The reaction fronts travel at constant velocity over the surface; their width (from 10 nm till 100 nm) is in the mesoscopic range.In this thesis single molecules, metal-organic complexes and single adatoms are characterized on a metal surface by means of scanning tunneling microscopy (STM). Specifically the organic molecule 4-(trans-2-(pyrid-4-yl-vinyl)) benzoic acid (PVBA) is primarily in the focus. The molecule has two functional groups, a pyridyl and a carboxylic group connected by a vinyl group giving rise to.


Topics: ddc:530, 530 Physics, 530 Physik, ddc:541, 541 Physikalische Chemie, 541 Physical and theoretical chemistry, STM, oxide films, ceria, silica, STS.In the final part of this thesis (chapter 3.3) a range of polymers containing a so called sawhorse unit were synthesized. The reaction of (Ru3(CO)12) with acetic acid led to the formation of a polymeric precursor (Ru2(OAc)2(CO)4)n consisting of a dinuclear ruthenium(I) unit. The metal centres are bridged by two acetato groups and each ruthenium is coordinated by two carbonyl ligands. In the.

Rastertunnelmikroskopie Dissertation

In this thesis the local electronic as well as charge transport properties down to atomic length scales of epitaxial graphene on the SiC(0001) surface are investigated. To achieve this, next to well known scanning probe techniques, the method of scanning tunneling potentiometry (STP) is applied at 6 K and under UHV-conditions for the first time.

Rastertunnelmikroskopie Dissertation

Scanning tunneling microscopy (STM) was introduced in 1982 by Gerd Binnig and Heinrich Rohrer. 1 For this achievement, they were awarded the Nobel Prize in Physics in 1986 shared with Ernst Ruska. The STM technique allows to probe the electronic structure of a sample. It also yields information on the geometry and on the vibrations of the sample in real space. The principle of STM is based on.

Rastertunnelmikroskopie Dissertation

Surface bonding of a functionalized aromatic molecule Adsorption configurations of PTCDA on coinage metal surfaces: Autor: Oliver Bauer: Publikationsform: Dissertation: Abstract: The present work aims at establishing a comprehensive model for the bonding mechanism for the adsorption of the organic prototype molecule 3,4,9,10-perylenetetracarboxylic 3,4:9,10-dianhydride (PTCDA) on coinage.

Rastertunnelmikroskopie Dissertation

Abstract. The adsorption and influence of several 1,4-dicarboxylic acids with a Cu(110) surface was investigated under ultra-high vacuum (UHV) conditions with X-ray photoelectron.

Rastertunnelmikroskopie Dissertation

Some newspapers also print essays in the op-ed section.AcademicIn the dialectic form of the essay, which is commonly used in philosophy, the writer makes a thesis and argument, then objects to their own argument (with a counterargument), but then counters the counterargument with a final and novel argument. This form benefits from presenting a broader perspective while countering a possible.

Construction and Operation of a milli-Kelvin Spectroscopic.

Rastertunnelmikroskopie Dissertation

COVID-19 Resources. Reliable information about the coronavirus (COVID-19) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this WorldCat.org search.OCLC’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus.

Rastertunnelmikroskopie Dissertation

The main focus in the present thesis as a multidisciplinary surface science study is directed to the investigation of epitaxially grown graphene on SiC(0001), the Si-terminated basal plane surface of SiC. A few considerations are also devoted to epitaxial graphene on the C-terminated counterpart, SiC(000-1), and to non-basal plane surfaces. Apart from the precise knowledge about the growth.

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Rastertunnelmikroskopie Dissertation

In this thesis the self-assembly and electron transport properties of conjugated molecules are investigated by means of scanning tunneling microscopy (STM) and spectroscopy (STS) at solid-liquid interfaces and under ultrahigh vacuum conditions and low temperatures. The use of the molecules in hybrid-molecular electronic devices and potential approaches to a mono-molecular electronics are.

Rastertunnelmikroskopie Dissertation

Doctoral Thesis: Language Code: en: Abstract: Metallic nanowires grown by self-organisation on Si surfaces may be interesting for future applications in Si based nanotechnology, but they will also show unique physical phenomena, e.g. Peierls transitions or Tomonaga-Luttinger liquid behaviour, if they are characterised by a one-dimensional electronic structure. This thesis concentrates on the.

Rastertunnelmikroskopie Dissertation

In this thesis the concept and the experimental realisation of a combined fs-laser low temperature scanning tunneling microscope for investigations of dynamics in mole- cule-metal-systems on atomic scale is presented. With the highly reproducible focusing of the laserspot under the tunneling tip it is possible to analyse reaction rates and therefore to understand the underlying reaction paths.

Scanning Tunneling Microscopy using Superconducting Tips.

Rastertunnelmikroskopie Dissertation

A dissertation submitted to ETH ZURICH for the degree of DOCTOR OF SCIENCES Presented by Jesse Roose Diplom-Chemiker, University of Bremen Born June 18th, 1984 Citizen of Germany Accepted on the recommendation of Prof. Dr. Francois Diederich, examiner Prof. Dr. Petra Dittrich, co-examiner Zurich 2013 Summary It is not only the molecular beauty of (n)helicenes that has fascinated researchers.

Rastertunnelmikroskopie Dissertation

The Publication Server epub of our university should also contains all our thesis, partly with abstracts. Summer Term 2020 Summer term 2020 Philipp Wilhelm (Prof. Lupton, --- Termin unklar ---) Exzitonlokalisierung durch Symmetriebrechung in organischen Halbleitern Jonas Zipfel (Dr. Chernikov, --- Termin unklar ---) Excitons in monolayer semiconductors in complex environments and under.

Rastertunnelmikroskopie Dissertation

The present dissertation contains three major objectives. The first is an improvement of the evaluation process of IETS data using Wavelet analysis. This requires a detailed understanding of all parameters especially the temperatures of tip and sample. Therefore, the second one is the calibration of these temperatures using a superconductive sample. Further influences of the tip on topography.

Rastertunnelmikroskopie Dissertation

The objective of the present thesis was to design a novel experimental setup for the investigation of the physical and chemical properties of solid surfaces covered by metal clusters applying scanning tunneling microscopy (STM) and femtosecond laser photoemission spectroscopy (PES). This combination of analytical techniques provides the possibility to monitor surface characteristics with.

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