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.
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Showing 1 to 20 of 46 for “"Dipole Interactions"”.
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Dipole interactions in crystals
Thesis (Ph.D.) Massachusetts Institute of Technology. Dept. of Physics, 1947.
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Dipole-Dipole Interactions in Alkali Halides Doped with Hydroxyl
Submitted by Jesse Garrison (jagarris@illinois.edu) on 2011-06-10T16:27:13Z No. of bitstreams: 1 1981_potter.pdf: 3658463 bytes, checksum: 3b170f5a7503b36a6d1012bd8b556457 (MD5)
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Quantum simulations in interacting Rydberg synthetic dimensions
… Leveraging the strong, long-range, and tunable dipole-dipole interactions between Rydberg atoms, this approach significantly extends the capabilities of synthetic dimensions into the strongly interacting regime, enabling the exploration of quantum many-body phenomena beyond the reach of …
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Non-equilibrium dynamics of dipole-coupled internal states in cold gases
… behaving as spin$-1/2$ models with long-range interactions. We first study a closed system with both static and resonant near-field dipole interactions under an external drive. By studying the uniform mean-field dynamics of the system, we find the dynamics are given by Rabi oscillations, with a …
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Structure-Morphology-Property Relationships in Perfluorosulfonic Acid Ionomer Dispersions, Membranes, and Thin Films to Advance Hydrogen Fuel Cell Applications
… of dispersions, membranes, and thin films. Dipole-dipole interactions between colloidal aggregates modulated by solvent composition were found to significantly influence the viscosity of PFSA dispersions. A framework of PFSA-solvent interactions is developed to predict the onset of …
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Fluorescence Resonance Energy Transfer (FRET) systems for biomedical sensor applications
… by which energy is transferred, via long range dipole-dipole interactions, from a donor molecule (D) in an excited electronic state to an acceptor molecule (A). The emission band of D must overlap the absorption band of A in order for FRET to occur. FRET is employed in a variety of biomedical …
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Coherent atom-light interactions in multi-level systems
… the transition to thin vapour cells, the role of dipole interactions in Rydberg atoms motivates the idea of an atomic quantum dot. The Kerr effect is then characterised and used to perform phase modulation in a gas. The Rydberg state itself is then phase modulated and this is shown to give rise to …
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Quantum liquid crystal phases and unconventional magnetism in electronic and atomic fermi systems
… systems and itinerant Fermi systems with dipole-dipole interactions. It is based on published works of Refs. [65, 193, 68, 67, 66]. In the first part of the Thesis, I present the construction of a generalization of the the McMillan- de Gennes theory of nematic-smectic thermal phase …
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Identification and Quantitation of Cannabinoid Solute-Column Interactions Using the Hydrophobic-Subtraction Model to Predict Separation in High-Performance Liquid Chromatography
… steric, hydrogen-bond, cation exchange, and dipole interactions. To demonstrate the process, 16 cannabinoid compounds were chosen as the test solutes due to increasing interest and applications. The HSM was used to identify and quantify the various cannabinoid solute retention parameters …
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Cooperative Optical Non-linearity in a blockaded Rydberg Ensemble
… of a novel optical non-linearity mediated by the dipole-dipole interactions in a cold gas of Rydberg atoms. Electromagnetically induced transparency (EIT) is used to map the strong dipolar interactions onto an optical transition, resulting in a cooperative effect where the optical response of a …
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Magnetic Excitations in Cylindrical Multilayered Nanostructures
… is given for magnetostatic modes, where the dipole-dipole interactions dominate in the SW dynamics. The magnetostatic form of Maxwell's equations and electromagnetic boundary conditions are used to derive the SW dispersion relations in nanotubes. A transfer matrix formalism is subsequently …
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Analysis of Periodic and Random Capacitively-Loaded Loop (CLL) Metamaterial Structures for Antenna Enhancement Applications
… elements loaded radially around a standard dipole antenna at an electrically small distance. As a result of this innovative arrangement, the dipole antenna is easily transformed into a directive mechanically scanned antenna with high realized gain. The desired directivity and gain can be …
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Experimental Platform for a Box-Trapped Dipolar Quantum Gas
… a multitude of quantum phenomena that stem from dipole-dipole interactions, particularly their long-range and anisotropic nature. Consequentially, dipolar quantum gases make up an increasingly popular branch within an already thriving field of ultracold quantum gases. The thesis details the …
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Collective behavior of driven Janus colloids in external fields
… self-assembly structures by engineering static interactions between the colloids. The introduction of the fourth dimension, time, gives rise to a new generation of dynamic structures with novel functions. In this thesis, magnetic and electric fields are employed to inject energy into Janus …
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Functional Materials From Self-Assembled Macrocycles
… materials are typically held by non-covalent interactions such as hydrogen bonds, pi-pi stacking and dipole-dipole interactions. We are interested in developing supramolecular macrocyclic self-assemblies that could be utilized for a variety of applications. A bis-urea phenylether macrocycle …
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Properties Model for Aqueous Sodium Chloride Solutions near the Critical Point of Water
… model. The present model includes such classical interactions or effects as hard-sphere interactions, dipole-dipole interactions, ion dissociation effects, long-range ion-ion interactions, and a non-classical perturbation term. The related parameters that account for these effects were regressed …
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Nuclear Magnetic Resonance Spectroscopic Studies of Molecular Interactions with Special Reference to their Stereo-Specificity
Molecular interactions between polar aliphatic molecules (solute) and aromatic solvent molecules have been studied widely by nuclear magnetic resonance spectroscopy. Most of the studies have been carried out using solutes containing a single or group of equivalent protons and because of the paucity …
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Resonant Detection of Nano to Microscopic Objects Using Whispering Gallery Modes
… since the coupling cannot be explained by simple dipole-dipole interactions.</p>
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An investigation of the motion of liquid short chain molecules using Rayleigh-Brillouin spectroscopy
… the theory of Madden [Mol Phys, 36, 365 (1978)]; dipole-induced dipole interactions between pairs of density fluctuations cause intermolecular optical anisotropy. The results indicate that molecular reorientation may not be the predominant relaxation mechanism. Oleic acid was investigated using …
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Vibrational predissociation spectroscopy of hydrogen-bonded complexes in the 10 micron region
… width of less than 0.5 cm$\sp{-1}$. A transition dipole coupling model was studied to reveal that only 1 cm$\sp{-1}$ out of the 25 cm$\sp{-1}$ of splitting observed in (CH$\sb3$OH)$\sb2$ is due to dipole-dipole interactions. The model does not predict the isotopic shift in (CH$\sb3$OH)(CH$\sb3$OD) …
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