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Classical and quantum photoemission from N-V centers in nanodiamonds
No full textSingle photons are currently used in quantum cryptography, quantum computation and quantum simulation. The most widespread single photon sources exploit either spontaneous parametric down-conversion of pump photons or emission from quantum dots. Here we develop a time coincidence confocal setup to study the emission from nitrogen-vacancy centers in nanodiamonds. By analizing the antibunching of photons in the second order correlation function we obtain an order of magnitude for the number of probed fluorescent centers. This is a first evidence of the transition from classical to quantum emission regime. The setup can be used to characterize home-made samples, such as ion implanted diamond films or nanodiamonds produced by pulsed laser ablation in liquid nitrogen
Economia circolare e packaging sostenibile nel settore farmaceutico: un focus sul contesto europeo
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Thermal Energy Storage Tanks as a Source of Flexibility in District Heating Networks
Get PDFAfter a review of district heating generation and storage technologies, a simple model of a stratified tank is developed. It is then validated by means of comparison with an established model, and integrated into a representation of the whole Verona disrict network. The aim is to evaluate the flexibility that can be provided by a tank. It is found to be satisfactory when compared with using the network as storage, however it entails costs of a different nature
Application of a model for assessing the infection risk from COVID-19 in indoor environment
No full textLa tesi tratta l'implementazione di un modello per la valutazione del rischio di infezione per via aerea da COVID-19 in ambiente confinato. Il codice è sviluppato a partire da modelli di rischio esistenti tratti dalla letteratura. L'idea di base è quella di accoppiare il calcolo del rischio ad un modello di ventilazione zonale, il quale valuta il campo di moto dell'aria ambiente previa discretizzazione spaziale dello stesso. L'obiettivo è valutare l'influenza di alcuni parametri sul rischio
