Dokumente Fakultät für Physik (inkl. GAUSS) nach Gutachter "Salditt, Tim Prof. Dr."
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3d virtual histology of neuronal tissue by propagation-based x-ray phase-contrast tomography
(2018-07-05)Deciphering the three-dimensional (3d) cytoarchitecture of neuronal tissue is an important step towards understanding the connection between tissue function and structure and determining relevant changes in neurodegenerative ... -
A Dedicated Endstation for Waveguide-based X-Ray Imaging
(2012-08-30)X-ray microscopy has emerged as a powerful and versatile imaging technique in many fields of science over the last years, offering insights in opaque media at high spatial resolution. A major challenge remains the ... -
A matter of brightness: table-top X-ray generation inside waveguides and X-ray holography with single free-electron laser pulses
(2022-03-22)X-ray microscopy delivers insights into the structure of optically opaque bulk specimens with high spatial resolution. The source brightness poses a limit on the achievable resolution, however. While table-top X-ray sources ... -
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 ... -
Actin Filaments and Bundles in Flow
(2008-08-06)Actin, a protein and major component of the cytoskeleton, is organized in vivo into filaments, bundles, and networks which play an important role in mechanical stability and cellular motility. ... -
Aggregation and Gelation in Random Networks
(2010-06-23)In this thesis the formation, elasticity, and structure of randomly cross-linked networks is investigated analytically and with the help of computer simulations. In the first two chapters, ... -
Biological Matter in Microfluidic Environment - from Single Molecules to Self-Assembly
(2006-08-02)The interior as well as the exterior of cells is governed by networks composed of fibrous proteins. The mesh size of these networks is on the order of micrometers and therefore distinguishes ... -
Characterization and Control of Wave Propagation in the Heart
(2019-04-12)The heart is an excitable medium which supports the propagation of waves of electrical excitation. While these excitation waves enable the normal functioning of the heart, they also allow for self-sustained arrhythmic ... -
Coherent X-Ray Diffractive Imaging on the Single-Cell-Level of Microbial Samples:
(2014-12-17)Since its first experimental demonstration in 1999, Coherent X-Ray Diffractive Imaging has become one of the most promising high resolution X-Ray imaging techniques using coherent radiation produced by brilliant synchrotron ... -
Collective Short Wavelength Dynamics in Phospholipid Model Membranes - with Inelastic Neutron Scattering
(2009-07-20)Phospholipid membranes often serve as simple model systems to understand basic properties of their far more complex biological counterparts. One of the most significant aims in membrane ... -
Computer simulation and analysis of self-assembled alkylthiol monolayers on the surface of liquid mercury
(2016-08-10)In this dissertation I investigate the structure and thermodynamics of alkylthiol (thiol) surfactants on the surface of liquid mercury (Hg) by means of the large-scale Molecular Dynamics (MD) techniques. Simulations ... -
Cone-beam x-ray phase-contrast tomography for the observation of single cells in whole organs
(2015-11-10)X-ray imaging enables the nondestructive investigation of interior structures in otherwise opaque samples. In particular the use of computed tomography (CT) allows for arbitrary virtual slices through the object and 3D ... -
Coordinate-targeted optical nanoscopy: molecular photobleaching and imaging of heterostructured nanowires
(2018-11-22)Super-resolution far-field fluorescence microscopy (optical nanoscopy) is a mature set of methods which enable visualization of the nanometer-scale distribution of objects such as organic molecules, photoswitchable proteins, ... -
Critical dynamics of gelling polymer solutions
(2005-08-29)This thesis addresses critical dynamics of randomly crosslinked polymeric liquids within semi-microscopic models. Therefore, the well known Rouse- and Zimm model are generalized to random ... -
Development of an ultrafast low-energy electron diffraction setup
(2014-12-11)Quasi two-dimensional systems such as surfaces and atomically thin films can exhibit drastically different properties relative to the material's bulk, including complex phases and transitions only observable in reduced ... -
Developments in Femtosecond Nanoelectronics
(2015-01-21)Coupling light to metal surfaces can break the diffraction limit and concentrate optical fields at the nanoscale. The studies presented in this cumulative thesis investigate the influence of optical field localization ... -
Differentielle interferometrische Partikelverfolgung mit Subnanometer- und Submillisekundenauflösung
(2013-09-06)Single-particle tracking experiments have provided the opportunity to monitor dynamical processes on length scales from millimeter to subnanometer. Especially in biology, where relevant processes on the molecular level ... -
Einzelmolekülstudien auf Nanoskalen: STED Fluoreszenzfluktuationsspektroskopie
(2009-06-17)Fluorescence Microscopy Methods are widely used in the Life Sciences to visualize and spectroscopically analyze biologically processes. Single molecule methods, such as FCS (Fluorescence ... -
Enhanced Conformational Sampling of Proteins Using TEE-REX
(2008-02-29)Today's standard molecular dynamics (MD) simulations of moderately sized biomolecular systems at full atomic resolution are typically limited to the sub-microsecond timescale and therefore suffer from limited conformational ... -
Extreme-ultraviolet light generation in plasmonic nanostructures
(2014-01-30)The present (cumulative) thesis examines fundamentals of nanostructure-enhanced extreme-ultraviolet light generation in noble gases using two different nanostructure geometries for local field-enhancement. Specifically, ...