Ph.D. Theses

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2018-11-14
13:43
[PUBDB-2018-04495] Dissertation / PhD Thesis
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Cold Beams of Large Molecules for Structural Dynamics Studies
Hamburg 123 pp. () = Dissertation, Universität Hamburg, 2018
Biomolecules and their reactions are of great interest because they are important for the functions in our body and thus for health. The structure of a molecule defines its function, and in this work we demonstrate the crucial steps that will allow direct recording of structural information from large biological molecules through gas-phase x-ray di↵raction. [...]
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2018-11-12
15:08
OpenAccess [PUBDB-2018-04432] Dissertation / PhD Thesis
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Novel Approaches to the Production & Analysis of Biological Nanomaterials for Serial- Femtosecond X-ray Crystallography
181 pp. () [10.3204/PUBDB-2018-04432] = Dissertation, University of Hamburg, 2018  GO
Tremendous effort has recently been put into the development of novel methods and techniques in the realm of serial-femtosecond x-ray crystallography (SFX) and x-ray free-electron lasers (XFEL). This thesis strives to contribute to current research approaches. [...]
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2018-11-12
14:52
OpenAccess [PUBDB-2018-04428] Book/Report/Dissertation / PhD Thesis
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Optical and aerodynamic focusing of isolated particles for diffractive imaging experiments at X-ray free electron lasers
[DESY-THESIS-2018-034]
Hamburg : Verlag Deutsches Elektronen-Synchrotron, DESY-THESIS 191 pp. () [10.3204/PUBDB-2018-04428] = Dissertation, Universität Hamburg, 2018  GO
The highly brilliant, short and coherent pulses produced by X-ray free-electron lasers (XFELs) opened up a unique opportunity to image small objects in nature, such as protein macromolecules, clusters, viruses and nanoparticles with nearly atomic spatial resolution, and their dynamic processes can be probed with femtosecond temporal resolution. Single-particle imaging (SPI) is a coherent diffraction imaging technique at XFELs that consists of directing a stream of randomly oriented isolated bio-particles across the focus of the X-ray beam to construct high-resolution 3D structure from diffraction patterns of multiple identical particles. [...]
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2018-11-09
14:13
[PUBDB-2018-04362] Dissertation / PhD Thesis

Structural evolution of isotactic-polypropylene under mechanical load: a study by synchrotron X-ray scattering
187 pp. () = Dissertation, TU Dresden, 2018

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2018-11-07
14:55
OpenAccess [PUBDB-2018-04283] Dissertation / PhD Thesis
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Defects in Conformal Field Theories
95 pp. () [10.3204/PUBDB-2018-04283] = Dissertation, University of Hamburg, 2018  GO
Extended objects such as line or surface operators, interfaces or boundaries play an important role in conformal field theory. Here we propose a systematic approach tothe relevant conformal blocks which are argued to coincide with the wave functions of an integrable multi-particle Calogero-Sutherland problem. [...]
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2018-10-30
13:15
OpenAccess [PUBDB-2018-04053] Book/Report/Dissertation / PhD Thesis
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Advanced sample injection for serial diffraction at free-electron lasers
[DESY-THESIS-2018-032]
Hamburg : Verlag Deutsches Elektronen-Synchrotron, DESY-THESIS 159 pp. () [10.3204/PUBDB-2018-04053] = Dissertation, Universität Hamburg, 2018  GO
X-ray crystallography is a very powerful tool to study the structure of biological molecules such as proteins. Knowledge of the three-dimensional structure of such molecules aids the understanding of biological processes and as such how life works. [...]
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2018-10-19
15:45
[PUBDB-2018-03856] Dissertation / PhD Thesis
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Pentaphosphaferrocenes and Silver Salts as Building Blocks in the Self-Assembly of Discrete and Networked Spherical Supramolecules
Regensburg : University of Regensburg 177 pp. () = Dissertation, University of Regensburg, 2018

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2018-10-19
09:17
OpenAccess [PUBDB-2018-03848] Book/Report/Dissertation / PhD Thesis
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Structure of complex fluids under shear flows
[DESY-THESIS-2018-028]
Hamburg : Verlag Deutsches Elektronen-Synchrotron, DESY THESIS 137 pp. () [10.3204/PUBDB-2018-03848] = Dissertation, Universität Hamburg, 2018  GO
With the recent developments of modern synchrotron and X-ray Free Electron Laser (XFEL) light sources high speed and micrometer sized liquid jets have become one of the most important sample delivery systems. For that reason it is highly important to develop liquid jet devices compatible with micrometer X-ray beams, which are optimized for the investigation of nanostructures and the behavior of complex liquids behavior under flow.This thesis reports a detailed X-ray scattering study of a liquid jet produced by a gas dynamic virtual nozzle (GDVN) system. [...]
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2018-10-02
15:00
OpenAccess [PUBDB-2018-03707] Dissertation / PhD Thesis
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Radiation damage of highly irradiated silicon sensors
Hamburg 200 pp. () [10.3204/PUBDB-2018-03707] = Dissertation, University of Hamburg, 2018  GO
Modern particle physics at colliders demands for a continuous increase of the luminosityfor colliding particle beams in order to study rare events. The requirementsfor the performance of the particle detectors are increasing while the detectors aresubject to unprecedented fluences of particles. [...]
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2018-09-25
10:27
OpenAccess [PUBDB-2018-03574] Dissertation / PhD Thesis
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Simulation of gas focused liquid jets
160 pp. () [10.3204/PUBDB-2018-03574] = Dissertation, University of Nova Gorica (Slovenia), 2018  GO
The main aim of dissertation is to develop an experimentally verified computational fluid dynamic (CFD) model of micron-sized liquid jet, produced by an injection molded Gas Dynamic Virtual Nozzle (GDVN). In these nozzles, liquid jets are efficiently orientedlytransporting mass and momentum [...]
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