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 30 for “"Metastable states"”.
-
Statistics, geometry, and mechanical states in cellular matter
… domain statistics, geometry, and mechanical states in two-dimensional cellular matter using mathematical and mechanical modeling. In the 1920s, F.T. Lewis proposed an empirical linear correlation between the average area of n-sided cells and their topologies based on observation of epidermal …
-
Electron Ionization and Excitation Coefficients for Argon, Krypton, and Xenon in the Low E/p Region and Kinetics of Interhalogen Diatomics
… emission attributed to the rare gas metastables. Using this information a revised set of self-consistent near threshold inelastic cross sections for each rare gas studied was determined. Experiments aimed at trying to measure the electron excitation cross sections from the metastable …
-
Bose-Fermi mixtures of ultracold gases of dysprosium
… a complex energy level structure with nearly 140 metastable states (Chapter 2), Dy MOT at 421-nm transition with 32-MHz linewidth was realized without any rempumper, exploiting its large magnetic moment, which brought a strong magnetic confinement of metastable states of Dy. This unique MOT/MT …
-
Crystal Growth, Phase Transformations, and Electrical Properties of Metastable Gallium Antimonide-Germanium Alloys
Single crystal metastable (GaSb)(,1-x)Ge(,x) alloys have been grown on GaAs substrates with compositions across the GaSb-Ge pseudobinary phase diagram. The alloys transformed to the equilibrium state through a continuous series of metastable states at a rate limited by diffusion. Ion bombardment …
-
Electromagnetically Induced Transparency and electron spin dynamics using superconducting quantum circuits
… They feature quantized flux and/or charge states depending on their fabrication parameters, and the resultant quantized energy levels are analogous to the quantized internal levels of an atom. This thesis builds on the SQC-atom analogy to quantum optical effect associated with atoms, known …
-
Multiple thresholds and many-atom dynamics in the cavity QED microlaser
… most probable velocity, but long lifetimes of metastable states preclude the observation of true steady-state transition points. For nonzero atom-cavity detuning the microlaser displays broadenings and shifts which are not yet well-understood. Quantum trajectory simulations are performed to …
-
Determination of the Helium -6 Nuclear Charge Radius Using High-Resolution Laser Spectroscopy
… System (ATLAS), and were excited to the metastable states by an RF-driven discharge. The spectroscopy was performed on individual 6He atoms confined and cooled in a magneto-optical trap. The isotope shift between 6He and 4He on the 23S1-3 3P2 transition at 389 nm was measured to be …
-
Determination of the Helium-6 Nuclear Charge Radius Using High-Resolusion Laser Spectroscopy
… System (ATLAS), and were excited to the metastable states by an RFdriven discharge. The spectroscopy was performed on individual 6He atoms confined and cooled in a magneto-optical trap. The isotope shift between 6He and 4He on the 23S1−33P2 transition at 389 nm was measured to be …
-
Glassy models of protein folding
… the dynamics of the model. The model has many metastable states and the distribution of the lifetimes of these states is log-normal at high temperatures and becomes much broader in the glassy phase. Also, we calculate the folding time by deriving a generalization of transition state theory that …
-
Theoretical study of direct and indirect single ionisation by electron impact /
… coefficient, correlation effects, modelling of metastable states. The dissertation concludes with the main conclusions that are related to the defended statements. The dissertation is prepared in English, its volume is 103 pages. The dissertation consists of content, the list of author's …
-
Tiesioginės ir netiesioginės viengubos jonizacijos elektronų smūgiais tyrimas /
… coefficient, correlation effects, modelling of metastable states. The dissertation concludes with the main conclusions that are related to the defended statements. The dissertation is prepared in English, its volume is 103 pages. The dissertation consists of content, the list of author's …
-
Understanding long timescale phenomena in atomic systems from accelerated molecular simulation methods
… energy barriers, which represent transition states separating two stable or metastable states of a system. Therefore, we propose two methods to simulate the escape of a system from a metastable state to a transition state, which, when repeated, leads to atomic trajectories of extremely slow …
-
Field induced switching in multilayer rhombic magnetic rings
… sensors through the use of multiple resistance states exhibited within these devices. The magnetization reversal characteristics of these structures are explored in an effort to fully understand interactions occurring within the devices and their resulting effect on giant magnetoresistance …
-
Physical interpretation of coarse-grained bead-spring models of complex fluids
… free energy differences among various stable and metastable states. Consequently, modeling these materials requires accounting for both thermal fluctuations and non-equilibrium processes. This has proven to be challenging with traditional approaches of energy minimization and perturbation in field …
-
Interplay of flow and microstructure in complex fluids: Semiflexible polymer solutions and emulsions
… simulations. The rate of decay of uncollapsed states, the preferential pathways of condensation, and the likelihood and lifespan of the different metastable states are analyzed. The collapsed states are described quantitatively through the spatial correlation of tangent vectors along the chain. …
-
Collective hydrodynamics of soft microparticles in quasi-two-dimensional confinement
… as they are carried by the flow. The crystalline states generalize the two-body bound state to more complex configurations and collective modes. We also consider the wider dynamical landscape, finding metastable states with new, exquisitely coordinated particle motions. However, neither flowing …
-
Controllable Adhesion In A Bio-Inspired Film-Terminated Fibrillar Surface
… a film-terminated fibrillar interface with two metastable states. In the first state, a thin film spanning the fibrillar surface results in strongly enhanced adhesion due to crack-trapping. In the second state, the thin film collapses onto the substrate between fibrils and resembles a rough …
-
Computational framework for metastable materials discovery: integrating kinetics and accurate properties
… materials discovery is the prediction of metastable materials: long-lived materials with an atomic structure that is not the global minimum of the relevant thermodynamic potential. Identification of such materials requires understanding their statistics and thermodynamics to understand …
-
Luminescent decay and spectra of impurity-activated alkali halides under high pressure
… compounds. For the Tl+-doped compounds, metastable states control the lifetime, and parameters are extracted from the data for a multi-level model. Level splittings, level degeneracies, and intrinsic radiative rates are among the parameters determined in this study. Lifetimes were found …
Page 1 of 2