Dokumente Fakultät für Physik (inkl. GAUSS) nach Gutachter "Lauterborn, Werner Prof. Dr."
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A waveguide-based lens-less x-ray microscope
(2006-09-05)A lot of effort is currently invested to realize phase contrast imaging with hard x-rays. For specimen consisting of light elements, e.g. biological samples, the induced phase shift of the ... -
AdS/CFT Holography of the O(N)-symmetric $\phi^4$ Vector Model
(2008-01-10)We study the AdS/CFT correspondence at the example of the renormalization group IR and UV fixpoint theories of a Euclidean O(N)-symmetric vector field theory with $(\underline \phi^2)^2$ interaction in 2 dimensions. These ... -
Anregbarkeit der Kelvin-Helmholz-Instabilität in der freien Scherströmung hinter einer scharfen Kante
(2004-11-29)The generation and compensation of instability waves in the detached free shear layer behind the trailing edge of a splitterplate that separated to regions with different flow velocities, ... -
Arrival times in quantum mechanics: Operational and quantum optical approaches
(2005-07-29)The theoretical analysis of time observables in quantum mechanics has been controversial and is still subject to debate. In the present work, a measurement-based approach to quantum arrival ... -
Cavitation and shock wave effects on biological systems
(2004-02-26)This thesis investigates the effects of cavitation and shock waves on systems of biological or medical relevance. Its main focus lies on high-speed optical observations of cavitation bubble ... -
Charakterisierung von Kavitationsblasenpopulationen
(2011-06-22)Acoustic cavitation denotes the nucleation and dynamics of bubbles in liquids under insonication. It is found that bubbles in an acoustic cavitation field do not form a homogeneous group, ... -
Controlled delamination of metal films by hydrogen loading
(2009-01-28)In this work we quantitatively determine the adhesion energy between metal films and their substrates. Therefore a new controlled buckling technique is established, applying the strong ... -
Critical Behavior and Crossover Effects in the Properties of Binary and Ternary Mixtures and Verification of the Dynamic Scaling Conception
(2008-03-18)Ultrasonic attenuation spectra in the frequency range between 180 kHz and 500 MHz, dynamic light scattering and shear viscosity measurements of a variety of liquids exhibiting a demixing point have been measured are ... -
Dielektrische Wellenleitergitter in Resonanz
(2009-06-08)The combination of a planar waveguide and a one-dimensional diffraction grating allows to couple polarized monochromatic light under a given incident angle into and totally out of the ... -
Diffraktive Phasenelemente für partiell-kohärente UV-Laserstrahlung
(2001-07-25)Diffractive phase elements (DPE) are suited for beam shaping of coherent laser radiation. The height profile of the DPE changes the phase of the incomming laser beam to shape the angular ... -
Entwicklung optischer Feldmessverfahren zur Charakterisierung mikrofluidischer Mischungsvorgänge
(2008-05-09)The two dimensional Molecular Tagging Velocimetry (2D-MTV) is used to measure velocity fields of the flow in a micro mixer. Instead of commonly used micro particles an optical tagging of the flow is performed by using ... -
Experimental investigation of shock wave - bubble interaction
(2010-06-02)The dynamics of laser-generated single cavitation bubbles exposed to lithotripter shock waves is investigated experimentally. The effects of shock impact on the fast bubble dynamics are ... -
Experimental study of lipid membranes: lipid domain formation and peptide aggregation.
(2006-06-22)In the presented work we have attemptted to improve our understanding of the factors which lead to the formation of lipid membrane spatial heterogeneities, caused by mixtures of different lipids and/or transmembrane peptides. ... -
Freie Enthalpie binärer metallischer Legierungsschmelzen: Molekulardynamik Simulationen für NixZr1-x
(2005-01-31)A method to determine the free enthalpy of molecular dynamics simulated binary alloy melts is introduced. Here, first the entropy and free enthalpy of the ordered, intermetallic crystalline A x B 1-x - phases are ... -
Hard X-ray Waveguide Optics
(2005-11-18)The thesis is about the preparation of intense hard X-ray nanobeams focusing on the use of X-ray waveguides in resonant beam coupling and front coupling geometry. -
High Resolution Scattering of He Atoms and D<sub>2</sub> Molecules from the LiF(001) Crystal Surface
(2004-04-14)In this dissertation, a flexible, high-resolution molecular beam apparatus is described which allows surface scattering experiments over a wide range of final angles for fixed incident ... -
Markierungsfreie Proteinanalytik mit oberflächenverstärkter Ramanspektroskopie
(2009-12-15)The determination of biological functions of proteins in metabolism is an important discipline in the field of life sciences. The search for marker proteins, correlated directly to pathological ... -
Materie-Optik mit Edelgasmolekülen an Nanostrukturen
(2004-01-26)The advance of matter optics, thus the coherent scattering of an atom or molecule beam from a nanostructured grating, recently gave conclusive evidence for the extremely weakly bound diatomic ... -
Mathematical Description of Differential Hebbian Plasticity and its Relation to Reinforcement Learning
(2009-11-18)The human brain consists of more than a billion nerve cells, the neurons, each having several thousand connections, the synapses. These connections are not fixed but change all the time. In order to describe synaptic ... -
Mechnismen der Stromunterdrückung in supraleitenden YBa2Cu3O7-d Kleinwinkelkorngrenzen
(2004-05-10)In highly textured thin films of the high-temperature superconductor YBa2Cu3O7-d (Y-123) intragranular critical current densities of some 1011 A/m2 at 4.2 Kelvin can be achieved. In contrast to this, in bicrystalline samples ...