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 110 for “"FIS/03 Fisica della materia"”.
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Low-dimensional carbon allotropes: an electron microscopy investigation
The research reported in this manuscript concerns the structural characterization of graphene membranes and single-walled carbon nanotubes (SWCNTs). The experimental investigation was performed using a wide range of transmission electron microscopy (TEM) techniques, from conventional imaging and …
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4H silicon carbide particle detectors: study of the defects induced by high energy neutron irradiation
… in the field of sensor design and improved base materials have pushed the radiation hardness of the current silicon detector technology to impressive performance. It should allow operation of the tracking systems of the Large Hadron Collider (LHC) experiments at nominal luminosity (1034 cm-2s-1) …
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ADIABATIC CONDITIONS FOR FINANCIAL SYSTEMS
In the Black-Scholes context we consider the probability distribution function (PDF) of financial returns implied by volatility smile and we study the relation between the decay of its tails and the fitting parameters of the smile. We show that, considering a scaling law derived from data, it is …
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QUANTUM COMMUNICATIONS IN CONTINUOUS VARIABLE SYSTEMS
Nowadays, quantum communications provide a vast field of research in rapid expansion, with a huge potential impact on the future developments of quantum technologies. In particular, continuous variable systems, employing coherent-state encoding and quadrature measurements, represent a suitable …
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From atoms to extended structures via ab-initio and multi-scale simulations
… the theoretical and computational modelling of materials by using a variety of ab-initio approaches to accurately predict the properties of realistic structures. A number of known and novel carbon-based materials are studied, exploiting the unique versatility of carbon to bind into several …
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Study of Ultracold Fermi Gases in the BCS-BEC Crossover: Quantum Monte Carlo Methods, Hydrodynamics and Local Density Approximation.
In this Thesis we will theoretically address some issues concerning the Physics of ultracold Fermi gases, all of them with experimental relevance. The field of ultracold gases, and more recently of ultracold Fermi gases, is gathering a lot of experimental and theoretical interest for two main …
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Measurement of the density profile of quantized vortices and of the equation of state in a 3D interacting Bose gas
In this thesis I present two different research topics investigated during the course of my PhD, regarding the analysis of spatial structures in a Bose Einstein condensate. Ultracold atomic gases offer a privileged platform for such kind of experiments, thanks to the fine control that can be …
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Nanodiamonds for biological applications: Synthesis by laser ablation and sensing of local magnetic environment by optical spectroscopy of NV centers
… , and then by a fast cooling of the molten material in water. I provide a theoretical description of both superheated and undercooled liquids and of the mechanism of phase explosion. The investigation of the link between the metastable liquids (superheated or undercooled) and the synthesis …
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