Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 95 for “"out-of-equilibrium"”.
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Out of Equilibrium: Modelling and Simulating Traverse
Managing disequilibrium and its consequent traverse is one of the important topics in economic theory. During such traverse, the evolving economic system faces various imbalances and coordination problems that arise within and outside the sys-tem. In order to traverse the disequilibrium, the …
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Coffee-Rings and Glasses: Colloids Out of Equilibrium
… experiments that utilize colloids to explore nonequilibrium phenomena. Specifically, the deposition of particles during evaporation and the glass transition are explored. In the first set of experiments, we found that particle shape has a profound effect on particle deposition. We evaporated …
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Exploring Interacting Bose Gases in and out of Equilibrium
This thesis describes a collection of experiments that explore interacting ultracold Bose gases, both in and out of equilibrium. Our experiments are performed using a gas of $^{39}$K or $^{87}$Rb confined in the uniform potential of an optical box trap, a novel testbed for quantum many-body …
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Motility-induced phases: out-of-equilibrium droplets, surfaces, and survival
<p>Active matter represents a unique kind of out-of-equilibrium matter that is endowed with motility, the ability of each individual unit to move according to its own self-propulsion force. Objects of study in active matter include entities like birds and cells, which become particularly …
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Out-of-equilibrium dynamics in a tuneable homogeneous Bose gas
This thesis describes studies of out-of-equilibrium dynamics in an interacting homogeneous Bose gas. We use the versatile platform of an ultracold gas of $^{39}$K, prepared in an optical box trap. The experiment features both tuneable interaction strengths and a homogeneous atomic density. We …
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Magnetism and superconductivity out of equilibrium: Towards ultrafast superconducting spintronics
The integration of superconductors in spintronic devices can enhance their performance. For instance, superconducting spintronics may enable the development of suitable memories for cryogenic computing systems, which ideally should operate at a higher speed than current technologies. Femtosecond …
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Topological Signatures for the Kitaev Chain in and out of Equilibrium
This thesis investigates aspects of the topological properties and non-equilibrium dynamics of one-dimensional quadratic fermionic systems, with a primary focus on the Kitaev chain and related lattice models. A unified theoretical framework is developed based on quadratic Hamiltonians, their …
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Cellular mimics within lipid vesicles and in thermal out-of-equilibrium chambers
The absence of clear criteria to recognize life and evaluate attempts at building a cell from component parts has slowed progress towards the construction of cellular mimics that fully display the properties of natural living cells. In the first part of this PhD thesis, a method to objectively …
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Stationary Anti-de Sitter Black Hole Solutions in and out of Equilibrium
… In this thesis we numerically obtain a number of stationary black hole solutions to the Einstein-Maxwell equations with a negative cosmological constant. The AdS/CFT correspondence has caused an upsurge in studying anti-de Sitter (AdS) space, and under this duality, the study of classical black …
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Systems Driven out of Equilibrium with Energy Input at Interfaces or Boundaries
We study the non-equilibrium behavior of systems that are driven out of equilibrium from the interface. In the first part of this thesis, we study a model of a two-dimensional lattice gas that is in contact with two heat baths that are at different temperatures. Performing Monte Carlo simulations, …
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Quantum simulation and out-of-equilibrium dynamics of quantum gases in optical cavities
… loaded into optical cavities constitute one of the most versatile platforms for the study of out-of-equilibrium dynamics and quantum simulation of many- body systems. In this thesis, we explore these two possibilities, motivated by current state-of-the-art atom-cavity experiments, uncovering …
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Molecular recognition, in- and out- of equilibrium, in the actions of bacterial multidrug efflux nanomachines
The increasing number of antibiotic-resistant infections is outpacing the provision of new antibacterial treatments and leading to a growing health and economic burden. One of the main mechanisms that bacteria use to acquire drug resistance is through the expression of multidrug efflux …
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Out-of-equilibrium sampling as a protocol to unveil locally-smooth neural network configurations in non-convex optimization
L'abstract è presente nell'allegato / the abstract is in the attachment
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Self-assembly and dynamics of colloidal dispersions in steady and time-varying external fields
A diverse set of functional materials can be fabricated using dispersions of colloids and nanoparticles. If the dispersion is responsive to an external field, like dielectric and charged particles in an electric field or paramagnetic particles in a magnetic field, the field can be used to …
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A scalable machine learning approach to thermal and non-thermal order-disorder phase transitions with ab initio accuracy
The study of out-of-equilibrium systems offers a gateway to transformative technological appli- cations and emerging physical phenomena that are inaccessible via standard adiabatic pathways. However, modeling these states is formidably challenging, as it requires describing non-trivial physical …
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Translational Non-Equilibrium Effects in Reactive Dynamics of Detonations
… zone coupled with transverse shocks. The role of out-of-equilibrium phenomena in these waves remains unclear despite extensive research on the underlying physics. On the small scales, translational non-equilibrium associated with shocks, as postulated by Zel’dovich, may significantly affect the …
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Síntese e caracterização de ligas nanocristalinas à base de cobre e zircônio com elevada capacidade de formação de estado vítreo
… Arc melting and suction casting (solidification out of equilibrium) processes were performed in order to produce nanocrystalline materials. X-ray and scanning electron microscopy results showed that samples produced with arc melting followed by suction casting processes leads to visualization of …
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Controlling and probing nonlinear collective mode dynamics in quantum materials
Tailored laser pulses offer a powerful means of driving materials out of equilibrium by selectively addressing specific degrees of freedom. In particular, the excitation of low-energy collective modes in solids—such as lattice vibrations (phonons) and spin precessions (magnons)—to large amplitudes …
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Correlation Lengths and Times in Copper Manganese Spin Glasses From Simulation and Experiment
… field-dependent aging and measurements of finite-size effects are used to study correlation lengths and times of Cu1-xMn x spin glasses. Several results are found: a single model inspired by the Parisi solution explains both the experimentally observed aging and equilibrium fluctuation …
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