Dokumente GGNB - Göttinger Graduiertenzentrum für Neurowissenschaften, Biophysik und molekulare Biowissenschaften nach Gutachter "Bodenschatz, Eberhard Prof. Dr."
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Complex Dynamics in the Spread of COVID-19
(2023-05-05)The COVID-19 pandemic is the most recent example that infectious diseases can disrupt and permanently alter how societies work and interact. This manuscript builds around a series of papers studying disease spread from the ... -
Turbulence Measurements in Flows with Particles
(2023-01-31)Despite the ubiquity of turbulent flows in nature, a general solution to the governing equations of motion remain elusive. These equations are nonlinear and nonlocal, and they describe a chaotic system with multi-scale ... -
On mass transport in Physarum polycephalum
(2019-12-20)The network-forming slime mold Physarum polycephalum has proven to be the epitome of self-organization. As a single cell it adapts seemingly intelligent to stimuli, integrating various inputs to create a coordinated response ... -
Aggregation and pattern formation in charged granular gases
(2019-09-11)Particulate flows of dielectric grains are almost always plagued by contact or triboelectrification and the resulting long-range electrostatic interactions. Extensive experimental, but rare theoretical, work is ongoing at ... -
Geophysical Pattern Formation of Salt Playa
(2019-03-21)Patterns, such as the hexagonal salt ridges that emerge in salt deserts around the world, are a common phenomenon in geophysical settings. They are similar to other natural phenomena such as fairy circles, columnar joints ... -
Scale-dependent Response of Fluid Turbulence under Variation of the Large-scale Forcing
(2016-02-03)In this work, an experiment to measure the temporal evolution of energy transfer at different scales in a turbulent flow that was subject to a perturbation of the energy injection is described. Two types of experiments ... -
Curvotaxis and Pattern Formation in the Actin Cortex of Motile Cells
(2015-12-09)Amoeboid cell migration is a crucial part of life. Neutrophil granulocytes, a kind of phagocytes of the mammalian immune system, migrate from blood vessels through tissue towards spots of inflammation. To find this ... -
On the Scales of Turbulent Motion at High Reynolds Numbers
(2015-12-08)Turbulence is a physical state of a fluid far from equilibrium. In turbulent flows, a huge number of degrees of freedom is excited and a wide range of interacting scales determines the flow characteristics. Turbulent ... -
Development of new methods in fluorescence microscopy
(2015-12-02)In recent years, advancements in single-molecule imaging techniques have enabled scientists to study in great detail the cells and relevant physiological processes, including neurons and the communication between them. ... -
Fluctuations and Oscillatory Instabilities of Intracellular Fiber networks
(2015-11-10)Biological systems with their complex biochemical networks are known to be intrinsically noisy. The interplay between noise and dynamical behavior is particularly relevant in the case of chemotactic amoeboid cells as their ... -
Intramural Visualization of Scroll Waves in the Heart
(2015-10-09)Despite extensive research, the fundamental biophysical mechanisms underlying severe heart rhythm disorders such as ventricular fibrillation remain poorly understood. Ventricular fibrillation is an acute and highly lethal ... -
Direct Numerical Simulation of Transition to Turbulence and Turbulence Control in Pipe Flow
(2014-10-28)The subject of this thesis is the transition to turbulence and turbulence control in pipe flow. In pipes turbulence arises despite the linear stability of the laminar flow (subcritical transition) and directly from onset ... -
Shear flow experiments: Characterizing the onset of turbulence as a phase transition
(2014-04-07)In this cumulative thesis the onset of turbulence in shear flows with a linearly stable laminar flow is investigated experimentally. The experiments are performed in a pipe and a Taylor-Couette setup, both with large system ... -
High-bandwidth microrheology of cytoskeletal networks
(2012-02-08)The understanding of the material properties, the organization and the assembly of the cytoskeleton remains challenging. In this thesis the viscoelastic properties of cytoskeletal networks ...