Relevant bibliographies by topics / SCUOLA DI DOTTORATO DI RICERCA IN NANOTECNOLOGIE / Dissertations / Theses
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Dissertations / Theses on the topic 'SCUOLA DI DOTTORATO DI RICERCA IN NANOTECNOLOGIE'

Author: Grafiati
Published: 11 March 2023
Last updated: 31 July 2025

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1

Ambrosini, Stefano. "MBE growth of self-assisted GaAs nanowires and their characterization." Doctoral thesis, Università degli studi di Trieste, 2013. http://hdl.handle.net/10077/8572.

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2011/2012<br>Prefazione: La ricerca nel campo dei nanofili appartiene ancora al laboratorio e non all’industria. Cionondimeno, i nanofili sono oggetto di grande attrazione nella comunità scientifica e nanotecnologica, sia per il loro elevato “aspect ratio”, che per le loro capacità semiconduttrici. Il primo ne fa buoni candidati per usi di sensoristica e interazione con la luce, le seconde potrebbero invece sfruttate per la miniaturizzazione di componenti (opto)elettronici. Il GaAs è un materiale semiconduttore III-V con un band-gap diretto
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2

Pakdast, Seid Hossein. "Advanced MEMS resonator for mass detection and micromechanical transistor." Doctoral thesis, Università degli studi di Trieste, 2012. http://hdl.handle.net/10077/6690.

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2010/2011<br>Cantilever sensors have been the subject of growing attention in the last decades and their use as mass detectors proved with attogram sensitivity. The rush towards the detection of mass of few molecules pushed the development of more sensitive devices, which have been pursued mainly through downscaling of the cantilever-based devices. In the field of mass sensing, the performance of microcantilever sensors could be increased by using an array of mechanically coupled micro cantilevers of identical size. In this thesis, we propose three mechanically coupled identical cantilever
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3

Zanusso, Chiara. "Nanotecnologie in oncologia: farmacogenetica e farmacogenomica per l'ottimizzazione delle terapie antitumorali." Doctoral thesis, Università degli studi di Trieste, 2013. http://hdl.handle.net/10077/8579.

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2011/2012<br>In this study, the main objective is to analyze the effect of genetic variations (polymorphisms) on clinical outcome of colorectal cancer patients treated with oxaliplatin (FOLFOX4 regimen) and those with prostate cancer treated with radiotherapy, with the aim to identify those pharmacogenetic parameters able to provide an indication of a possible "personalization" of therapy. Nanomedicine is the application of nanotechnology in biomedical field to the prevention and treatment of diseases in the human body. Pharmacological research in oncology is aimed at the discovery of new anti
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4

Bellomo, Francesca. "Biopolymer based scaffolds for tissue engineering." Doctoral thesis, Università degli studi di Trieste, 2011. http://hdl.handle.net/10077/4474.

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2009/2010<br>Tissue engineering in the orthopedic field is mainly focused on the development and design of material to serve as a temporary extracellular matrix or scaffold to overcame the limitation of actual treatments. In fact, current treatments are based on autologous or autogenous bone grafts and as an alternative to these, metals and ceramics. The limitation of this kind of implants is related to shortage of autograft that can be obtained and to donor site morbidity; the possibility of immune rejection and of pathogen transmission from donor to host in the case of allograft; the poor ov
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5

Marini, Monica. "Evolving biosensors: intelligent devices at the nanoscale." Doctoral thesis, Università degli studi di Trieste, 2012. http://hdl.handle.net/10077/7366.

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2010/2011<br>In this work I present a novel approach to the use of biomolecules as constructive material for an autonomous DNA-based platform on which is possible to do sensing consequently actuating the object after the transduction of an environmental signal. The new approach is based on a DNA origami obtained by folding a long polynucleotide with hundreds of shorter oligonucleotides and resulting in a well defined and ordered disks of a diameter of about 100nm. Each disk is composed of two main parts, an external ring and an internal disk, connected each other in only two diametrically opp
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6

Era, Daniel. "Nanotechnological applications and pharmacogenetic research." Doctoral thesis, Università degli studi di Trieste, 2012. http://hdl.handle.net/10077/7360.

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2010/2011<br>Abstract (Italian version) Questo progetto di dottorato di ricerca è finalizzato allo studio dell'applicazione nella pratica clinica attuale della medicina di comunità, di tests farmacogenetici utili sia per la determinazione di polimorfismi noti per influenzare la dose iniziale di warfarin nella terapia anticoagulante orale, sia per l’analisi dei polimorfismi associati alla risposta di farmaci antidepressivi. Gli studi si sono perciò svolti in collaborazione con la medicina territoriale, al fuori dei centri di eccellenza e le rigorose condizioni in cui di solito vengono
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7

Sammito, Davide. "Integration of plasmonic gratings into optoelectronic devices." Doctoral thesis, Università degli studi di Trieste, 2013. http://hdl.handle.net/10077/8578.

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2011/2012<br>ABSTRACT This thesis deals with the control of light absorption in semiconductor devices by the plasmonic resonances of periodically arranged metallic nanostructures integrated on them. Metallic gratings support propagating (SPP) and localized (LSP) plasmonic excitations and surface plasmons-related phenomena, like Extraordinary Optical Transmission (EOT) and plasmonic band gaps, as well as conventional diffraction effects. We combine all the optical resonances outlined to tune the incoupling and distribution of incident photons in the absorbing semiconductor substrate. In partic
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8

Dal, Col Valentina. "In silico prediction of drug resistance: from cancer targeted therapy to cancer targeted prevention." Doctoral thesis, Università degli studi di Trieste, 2014. http://hdl.handle.net/10077/9976.

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2012/2013<br>Le recenti scoperte sulla natura dei processi genetici, implicati nelle trasformazioni neoplastiche, ci hanno permesso di identificare le principali lesioni cellulari che portano alla formazione del tumore, individuando in questo modo target selettivi sulla base dei quali progettare nuovi agenti terapeutici efficaci. La terapia bersaglio ha rappresentato una rivoluzione permettendo di superare l’aspecificità del trattamento antitumorale e colpendo, nello specifico, la causa biomolecolare del processo patologico neoplastico. I recenti sviluppi della modellistica molecolare si son
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9

Lucafo', Marianna. "Nanostrutture di carbonio come vettori per farmaci antitumorali." Doctoral thesis, Università degli studi di Trieste, 2013. http://hdl.handle.net/10077/8568.

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2011/2012<br>Carbon nanotechnology has evolved into a truly interdisciplinary field, bridging material science with medicine. Fullerenes (C60) play a major role in this field and are currently explored for biomedical applications such as radiopharmaceuticals and contrast agents, gene delivery and as carriers for chemotherapeutics. Five fullerene derivatives (F1, F2, F3, F4 and F5), functionalized by 1,3-dipolar cycloaddition of azomethine ylides to the C60 cage, were studied in vitro for their toxicity in a number of cell types and with different assays. Cell cytotoxicity on human mammary
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10

Santese, Francesca. "Molecular modeling of multi-functional nanostructured materials and coatings." Doctoral thesis, Università degli studi di Trieste, 2014. http://hdl.handle.net/10077/9974.

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2012/2013<br>Materiali e rivestimenti nanostrutturati possono potenzialmente apportare significativi cambiante nel campo della nanoscienze, nonché offrire una nuova generazione di materiali con caratteristiche e performance migliori. A questo proposito le tecniche computazionali diventano uno strumento fondamentale, in grado di ridurre notevolmente i tempi che vanno dall’idea iniziale al prodotto finito. La simulazione molecolare permette infatti la previsione delle proprietà macroscopiche prima che i materiali vengano preparati e caratterizzati sperimentalmente; consente inoltre una migliore
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11

Marson, Domenico. "Coupling of experimental and computational approaches for the development of new dendrimeric nanocarriers for gene therapy." Doctoral thesis, Università degli studi di Trieste, 2015. http://hdl.handle.net/10077/11803.

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2013/2014<br>Gene therapy is increasingly critical in the treatment of different types of maladies. The approach of gene therapy can be fundamental in dealing with many kinds of tumors, viral infections (e.g., HIV, HSV), and disturbs linked to genetic anomalies. However, the use of nucleic acids is limited by their ability to reach their action site—the target cell and, often, the inside of its nucleus. Dendrimers, on the other hand, are an interesting kind of polymers, the general synthetic scheme of which is relatively of recent development (∼1980). Among the many possible uses of these pol
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12

Zannier, Valentina. "ZnSe nanowires by molecular beam epitaxy: growth mechanisms and properties." Doctoral thesis, Università degli studi di Trieste, 2015. http://hdl.handle.net/10077/11134.

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2013/2014<br>This thesis is devoted to the study of the growth of Zinc Selenide (ZnSe) nanowires (NWs) by Au-assisted molecular beam epitaxy (MBE). The growth process consists in many steps which were individually investigated by means of in-situ and ex-situ spectroscopic and microscopic techniques. First, the formation of nanoparticles upon annealing of a thin Au film deposited on different substrates was studied by X-ray photoemission spectroscopy, grazing incident X-ray diffraction and scanning electron microscopy. The nanoparticles were used as seeds for the 1-dimensional ZnSe crystal gro
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13

Ionescu, Andrei Cristian. "The influence of resin-based dental materials on oral biofilms developement." Doctoral thesis, Università degli studi di Trieste, 2015. http://hdl.handle.net/10077/11132.

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2013/2014<br>Resin-based composites (RBCs) are the most widespread restorative dental materials used nowadays. Nanotechnologies allowed the development and improvement of a new generation of RBCs which nevertheless still present many unsolved issues. The most important is secondary caries, which is the recurrence of dental caries in tissues close to the restoration. Dental caries disease is driven by a dysbiotic biofilm colonizing both natural and artificial surfaces. Many approaches have been developed in order to address this issue, mainly the development of bioactive surfaces with contact-a
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14

Posocco, Paola. "Multiscale Molecular Simulation of Nanostructured Systems." Doctoral thesis, Università degli studi di Trieste, 2010. http://hdl.handle.net/10077/3445.

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2008/2009<br>Computational materials science based on multiscale approach is very promising in the domain of nanoscience. It gives the modeler a route from the atomistic description of the system to a trust-worthy estimate of the properties of a material, obtained from the underlying molecules in a quantifiable manner. In this thesis we discuss general guidelines for its implementation in the field of nanomaterials and propose an alternative pathway to link effectively atomistic to mesoscopic scale and this, in turn, to the macroscopic scale. As proofs of concept for the reliability of
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15

Travan, Andrea. "Nanocomposite systems based on metal nanoparticles and polysaccharides for biomedical applications." Doctoral thesis, Università degli studi di Trieste, 2010. http://hdl.handle.net/10077/3629.

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2008/2009<br>Questo lavoro riguarda lo sviluppo di materiali nanocompositi per applicazioni biomediche e si configura all’ interno del progetto europeo “Newbone” (EU-FP6); in particolare, lo scopo principale della tesi era realizzare un rivestimento biocompatibile e dotato di proprietà antibatteriche per protesi ortopediche. Sono stati preparati sistemi nanocompositi basati su un polisaccaride derivato dal chitosano (Chitlac) che permette di ottenere soluzioni colloidali di nanoparticelle (argento e oro) con proprietà antibatteriche. Parallelamente, è stato studiato un particolare meccani
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16

Borin, Daniele. "Micromechanical oscillators for biochemical applications." Doctoral thesis, Università degli studi di Trieste, 2015. http://hdl.handle.net/10077/11131.

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2013/2014<br>Gli oscillatori micro e nanomeccanici stanno trovando crescente applicazione come biosensori, grazie alla loro elevata sensibilità, alla possibilità di effettuare analisi con un ridotto volume di campione biologico e senza molecole di marcatura secondarie e alla loro integrabilità come sensori in dispositivi di analisi portatili a basso costo. Questo progetto ha come scopo l’utilizzo di oscillatori micromeccanici a geometria verticale (micropillars) come sensori biomolecolari, rispetto ai più comuni oscillatori orizzontali (cantilevers). La struttura dei micropillars, infatti, pe
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17

Mitri, Elisa. "Fabrication of microfluidic devices for studying living cells responding to external stimuli by FTIR vibrational spectroscopy." Doctoral thesis, Università degli studi di Trieste, 2014. http://hdl.handle.net/10077/9971.

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2012/2013<br>The present PhD Thesis is about the development of new fabricative strategies to obtain microfluidic devices suitable for InfraRed MicroSpectroscopy (IRMS) studies on living cells in physiological environment and the demonstration of the screening and diagnostic capabilities of this technique for bio-medical applications. IRMS detects the vibrational pattern of molecules allowing the label-free characterization of the chemical profile of a biological specimen and its correlation with the sample morphology. Although powerful and versatile, this technique has been limited until re
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18

Radivo, Andrea. "Experimental study of the physics of nanostructured organic photovoltaic devices." Doctoral thesis, Università degli studi di Trieste, 2014. http://hdl.handle.net/10077/9973.

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2012/2013<br>Organic photovoltaic (OPV) cells based on Bulk Heterojunction (BHJ) architecture, have reached a record efficiency of 8.3% approaching the value of 10% which is considered the threshold for commercial exploitation of this technology. However, BHJ OPV cells suffer from charge collection issues, which hinder significant further increase of efficiency. A few theoretical studies have given clear indications that the most efficient nanoscale architecture consists of nano interdigitated structure of donor (D) and acceptor (A), the materials
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Tavagnacco, Letizia. "How do water molecules probe and control bionanostructures and food functionalities." Doctoral thesis, Università degli studi di Trieste, 2014. http://hdl.handle.net/10077/9978.

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2012/2013<br>L’acqua è universalmente presente nei sistemi biologici. Le sue peculiari proprietà hanno una forte influenza sulla struttura e sul comportamento chimico di macromolecole biologiche ed alimentari. La dissoluzione di una molecola di soluto in acqua comporta l’interazione dei sui gruppi funzionali con la circostante struttura della fase condensata dell’acqua. La maggior parte delle molecole biologicamente importanti hanno una complessa architettura che mantiene assieme funzionalità polari e componenti idrofobiche. Le interazioni di queste funzionalità con le circostanti molecole d’a
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20

Corvaglia, Stefania. "Nanoscale platform to study unstructured proteins interactions." Doctoral thesis, Università degli studi di Trieste, 2014. http://hdl.handle.net/10077/9975.

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2012/2013<br>Le proteine intrinsecamente disordinate (IDP), nello stato nativo non ripiegate, sono inclini all’aggregazione e direttamente correlate con lo sviluppo di malattie amiloidi. Tra queste, ci siamo focalizzati sullo studio dell’alfa-Sinucleina (AS), una proteina coinvolta nella malattia di Parkinson, un disturbo neurodegenerativo caratterizzato dalla degenerazione dei neuroni dopaminergici e l’accumulo di AS in placche amiloidi. Sebbene lo studio delle interazioni AS-dopamina sia di importanza cruciale nella comprensione dei meccanismi responsabili dello sviluppo della malattia, tutt
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21

Lovat, Giacomo. "Self-assembly and on-surface chemistry of organic semiconductors on TiO2." Doctoral thesis, Università degli studi di Trieste, 2015. http://hdl.handle.net/10077/10894.

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2013/2014<br>Understanding and controlling the ordering and functionality of organic semiconductors coupled to a dielectric surface, besides constituting a fascinating topic in basic science, has the potential to foster the development of many novel technologies, ranging from efficient and inexpensive photovoltaic cells to flexible electronic components. In the present doctoral work, the well-characterized (110) surface of Rutile TiO2 single crystals, r-TiO2(110), has been selected as an archetypal dielectric substrate for the templated growth of organic molecules and the assessment of their p
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22

Romeo, Michele. "Development and applications of DFT methodologies for the simulation of core spectra of molecules adsorbed on surfaces." Doctoral thesis, Università degli studi di Trieste, 2015. http://hdl.handle.net/10077/10902.

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2013/2014<br>Questo documento riporta risultati di calcoli DFT di rilassamenti periodici e di spettri NEXAFS di core su soglia K per taluni sistemi di stato solido attraverso l’utilizzo di una metodologia computazionale ibrida. Appropriati modelli di cluster di tali rilassamenti vengono presi in considerazione per il calcolo degli spettri NEXAFS a livello finito in uno schema di approccio a orbitali molecolari. Il problema a cui ci si indirizza nella fattispecie riguarda la spettroscopia di molecole adsorbite su superfici. La prima parte del lavoro si focalizza sul calcolo di spettri NEXAFS K-
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23

Fornasaro, Stefano. "Targeting natural antioxidant compounds to the brain: a metabolomic assessment." Doctoral thesis, Università degli studi di Trieste, 2015. http://hdl.handle.net/10077/10897.

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2013/2014<br>A diet rich in fruits and vegetables has been associated with a decreased risk of brain diseases. Some plant-specific compounds occurring in fruits and vegetables, such as flavonoids, have been found to exert neuroprotection, thus decreasing neurological disease risk. The current hypothesis is that neuroprotection is due to the antioxidant properties of flavonoids. The main aims of this PhD thesis were: i) to assess whether some flavonoids are transported from the blood into the brain across the blood-brain barrier, ii) to understand if neuroprotection is mediated by an impact on
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24

Cellot, Giada. "Towards new generation of neuro-implantable devices : engineering neuron/carbon nanotubes integrated functional units." Doctoral thesis, Università degli studi di Trieste, 2010. http://hdl.handle.net/10077/3663.

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2008/2009<br>Le nanotecnologie sono un campo delle scienze che utilizza materiali e dispositivi ingegnerizzati aventi la più piccola organizzazione funzionale a livello di dimensioni nanometriche. Questo implica che nanodispositivi e nanomateriali possano interagire con i sistemi biologici a livello molecolare con un elevato grado di specificità. É largamente accettato che l’applicazione delle nanotecnologie nell’ambito delle neuroscienze abbia un forte potenziale (Silva, 2006). In questo contesto, i nanotubi di carbonio (CNT), un’innovativa forma di carbonio composta da strutture tubulari di
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Fontanive, Luca. "Nanoscale intercation for higher efficiency of contrast media." Doctoral thesis, Università degli studi di Trieste, 2011. http://hdl.handle.net/10077/4476.

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2009/2010<br>Iopamidolo, Iomeprolo e Iopromide sono Mezzi di Contrasto Iodinati Non-ionici (MCIN) usati in urografia e angiografia come soluzioni concentrate. I dati relativi ai MCIN presenti in letteratura mostrano un’abbondanza di informazioni cliniche ma una carenza di dati riguardanti le loro caratteristiche chimico-fisiche. L’efficenza di questi composti in ambito medico è dovuta alla combinazione di tali proprietà. Risulta quindi necessario uno studio relativo ai dettagli molecolari per chiarire i contributi di ogni gruppo funzionale del sistema che determinano le differenze in termini d
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26

Dalmiglio, Matteo Maria. "Oxidation of supported PtRh partcles:size and morphology effects." Doctoral thesis, Università degli studi di Trieste, 2010. http://hdl.handle.net/10077/3442.

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2008/2009<br>The chemical transformations of supported PtRh particles ranging in size from a few micrometers to a few nanometres, and nanocrystalline films have been studied under identical oxidizing conditions by means of different chemical and structural characterization techniques; in particular the main technique used has been the scanning photoemission spectromicroscopy (SPEM) available at the EscaMicroscopy beamline of the Elettra Synchrotron Light Source. This novel experimental technique allows sample’s chemical mapping with a spatial resolution of 100nm and the acquisition of photoemi
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Sciuto, Giacomo. "Innovative latent heat thermal storage elements design based on nanotechnologies." Doctoral thesis, Università degli studi di Trieste, 2012. http://hdl.handle.net/10077/7365.

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2010/2011<br>Since from the first Industrial Revolution, energy supply, which feeds human activities, has been characterized by consumption of fossil fuels such as coal, crude oil and gas. This supply model is heavely affected by a dramatic limitation, taht is the idea of feeding an infinite system (such as the human activities energy demand) with a finite (in terms of time) source - fossil fuels. Although this issue was already forecast in the early decades of the last century (e.g. G. Ciamician in The photochemistry of the Future, during The Ninth International Congress of Applied Chemist
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Chen, Yan Xin. "Nanostructured TiO2 Based Materials for electrocatalysis and Photoelectrocatalysis." Doctoral thesis, Università degli studi di Trieste, 2013. http://hdl.handle.net/10077/8574.

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2011/2012<br>Fossil energy sources are non-renewable being an irreplaceable endowment produced from millennia of biological and geological processes, which means that on the human time-scale they cannot be naturally regenerated and are only available in a finite amount on earth. Scientific and technological data concerning renewable fuels are exponentially growing and in parallel the governments are more and more attracted by these more sustainable energy sources. Overall, solar energy is the most abundant and easily available renewable resource which, however, has its own problems such as nei
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Ganau, Mario. "Nanotechnology Applications in Quantitative Neuroscience: Proteomic Analysis of Malignant Gliomas." Doctoral thesis, Università degli studi di Trieste, 2013. http://hdl.handle.net/10077/8575.

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2011/2012<br>Abstract (English) The current limit of knowledge advancement in proteomic analysis of gliomas, the most common primary malignant brain tumors, is related to the high sensitivity required to detect specific biomarkers within few cells volumes. To address this problem we developed a quantitative approach to eventually enable precise, high throughput and low cost analysis of glial cells with potential capability of real-time pathological screening and subtyping of brain tumors. A device consisting in micro-fabricated wells capable to isolate and host living astrocytes was desig
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Ottaviani, Giulia. "Characterization of cancer behaviour after laser biostimulation at cellular and molecular level." Doctoral thesis, Università degli studi di Trieste, 2015. http://hdl.handle.net/10077/11137.

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2013/2014<br>The main aim of this project is to provide an answer to the following issues: - on the one hand the definition of the cellular and molecular mechanisms of action of the laser therapy and its interaction with tissues - on the other hand the safety of laser therapy and is potential consequences on cancer behaviour We created a mouse model of oral carcinogenesis to assess potential differences in tumour angiogenesis in tissues treated with laser therapy compared to the control ones, by using both histological analysis and injection of Nano FluoSpheres®. A chemical carcinogen (4-
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Santarelli, Xenja. "Development of capabilities for "in situ" analysis of nanoparticles at the MCX powder diffraction beamline." Doctoral thesis, Università degli studi di Trieste, 2011. http://hdl.handle.net/10077/4479.

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2009/2010<br>Riassunto Presso la linea di diffrazione MCX (Material Characterization by X-ray diffraction) del Sincrotrone di Trieste e' stata messa a punto una stazione sperimentale che consente di eseguire analisi "in situ" di nanostrutture. Il sistema e' indipendente dal diffrattometro e consente di ottenere in tempi ridotti (grazie all’uso di un Imaging Plate come detector) pattern di diffrazione da polveri o film sottili. La stazione sperimentale e’ dotata di un forno che puo’ riscaldare i campioni fino a 1000ºC. Inoltre e' stato implementato un sistema che consente il flusso di gas at
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32

Birarda, Giovanni. "Development of microfluidic devices for biomedical applications of synchrotron radiation infrared microspectroscopy." Doctoral thesis, Università degli studi di Trieste, 2011. http://hdl.handle.net/10077/4475.

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2009/2010<br>ABSTRACT DEVELOPMENT OF MICROFLUIDIC DEVICES FOR BIOMEDICAL APPLICATIONS OF SYNCHROTRON RADIATION INFRARED MICROSPECTROSCOPY by Birarda Giovanni The detection and measurement of biological processes in a complex living system is a discipline at the edge of Physics, Biology, and Engineering, with major scientific challenges, new technological applications and a great potential impact on dissection of phenomena occurring at tissue, cell, and sub cellular level. The present PhD Thesis dealt with the development of methodologies and technologies to transform InfraRed Micro
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Cargnello, Matteo. "Tailored nanoarchitectures based on transition metals for heterogeneous catalysis." Doctoral thesis, Università degli studi di Trieste, 2012. http://hdl.handle.net/10077/7358.

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2010/2011<br>Presented in this thesis are experimental results obtained on the preparation of tailored architectures based on transition metals for applications in heterogeneous catalysis. The major focus of these studies was the preparation of active and thermally stable materials for several catalytic reactions and the accurate study of size-activity relationships in ceria-based systems. An array of preparation procedures was described starting with relatively simple approaches to more advanced methods based on self-assembly and the preparation of artificial atoms. Detailed catalytic and cha
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D'este, Elisa. "Bio-sample environment manipulation using advanced microscopy techniques." Doctoral thesis, Università degli studi di Trieste, 2012. http://hdl.handle.net/10077/7361.

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2010/2011<br>Under physiological conditions in the brain, molecules are released with high spatial and temporal resolution. A lot of efforts have been done in the last years in order to develop techniques that mimic this situation. Among them, we mention the use of micropipettes for the ejection of fluids, the use of AFM (Atomic Force Microscopy), microfluidic devices and optical manipulation. The latter approach exploits light to manipulate the samples, e.g. to create transient pores in the cell membrane or to move small objects carrying a stimulus. This Thesis concerns with the development
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Migliorini, Elisa. "Nanostructured substrates to control the Embryonic Stem cells differentiation into neuronal lineage." Doctoral thesis, Università degli studi di Trieste, 2012. http://hdl.handle.net/10077/7367.

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2010/2011<br>The objective of this project was to develop new nanotechnology-based strategies to increase embryonic stem cells (ESCs) differentiation into neuronal lineage. In particular it was chosen to investigate a nanostructured physical support for in vitro stem cell culture in which both the nanometrical topography and mechanical properties are well controlled and characterized. Nanopatterned substrates were designed to have physical properties as close as possible to the in vivo microenvironment where stem cells normally grow and differentiate based on the assumption that mimicking th
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Vaidya, Shital Ramchandra. "Study of magnetic and electronic properties of low dimentionality systems using aguer photoelectron coincidence spectroscopy." Doctoral thesis, Università degli studi di Trieste, 2015. http://hdl.handle.net/10077/10903.

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2012/2013<br>Scopo della tesi è l’utilizzo dell’elevato grado di discriminazione della tecnica APECS (spettroscopia in coincidenza fotoelettrone- elettrone Auger) per ottenere informazioni singolari, altrimenti non ottenibili con spettroscopie più tradizionali, in campi di applicazione di ampio interesse nelle scienze dei materiali, come i sistemi magnetici a bassa dimensionalità o i materiali ibridi in cui molecole organiche sono assemblate su substrati conduttori o semiconduttori, Nei decadimenti Auger core-valenza-valenza, si creano due lacune in banda di valenza. Nella spettroscopia Aug
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Fior, Raffaella. "Development of micro electro mechanical devices for the study of mechanosensitive ion channels and mechanical cell properties." Doctoral thesis, Università degli studi di Trieste, 2012. http://hdl.handle.net/10077/7363.

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2010/2011<br>The objectives of this doctoral research involve the development of tools, in particular micro-nano devices for the study of mechanical properties of single living cells and for the analyses of mechanosensitive ionic channels (MSCs). BioMEMS (Biological Micro Electro Mechanical Systems) have been devised and used to investigate MSCs and the cell mechanics in a completely innovative way. Living cells in adhesion can be studied in a physiological condition; the mechanical stretch can be controlled and measured; the MSCs activity can be evaluate using different techniques from patch
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Bidoggia, Silvia. "Mixed-monolayer protected gold nanoparticles for applications in medicine." Doctoral thesis, Università degli studi di Trieste, 2013. http://hdl.handle.net/10077/8573.

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2011/2012<br>In the last years, gold nanoparticles (AuNPs) protected by an organic shell of ligands have received a large interest for applications in the biomedical field in particular for diagnosis, imaging and therapy. This class of nanomaterials is largely used because of the easy of synthesis with different core sizes and shapes and controlled dispersion. Moreover, NPs can be protected by a large variety of organic compounds, with different functionalities and to allow the linkage of drugs and biomolecules. The nature of the ligand is responsible of the solubility of the NPs and could be
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Palma, Giuseppina. "Nanostructured dye-sensitized solar cells." Doctoral thesis, Università degli studi di Trieste, 2014. http://hdl.handle.net/10077/9972.

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2012/2013<br>Dye-sensitized solar cells (DSSCs) represent a promising alternative to silicon-based technology. From the first publications about DSSCs in the 90s, they are considered an important breakthrough for achieving high efficiency by using relatively inexpensive and abundant materials. Stability and efficiency are two crucial points in the development of this new class of hybrid photovoltaic devices. Most of the DSSC studies carried out over the past twenty years are based on the optimization of these two aspects. In particular, no particular efficiency improvement was obtained in the
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40

Lorenzut, Barbara. "Development of Nanostructured Catalysts for H2 Production and Purification." Doctoral thesis, Università degli studi di Trieste, 2010. http://hdl.handle.net/10077/3443.

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2008/2009<br>La richiesta mondiale di energia è in costante crescita a causa di diversi fattori tra cui incremento della qualità della vita, incremento della popolazione, l’industrializzazione, la crescita economica dei Paesi in via di sviluppo, etc. Saranno quindi essenziali importanti cambiamenti nelle tecnologie utilizzate per la produzione di energia per soddisfare la crescente domanda energetica nel rispetto delle severe limitazioni ambientali richieste per uno sviluppo sostenibile. In questo contesto viene riconosciuto all’idrogeno l’importante ruolo di vettore energetico (in concomitan
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41

Umeri, Andrea. "Study of Zirconia's ageing for applications in dentistry." Doctoral thesis, Università degli studi di Trieste, 2010. http://hdl.handle.net/10077/3446.

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2008/2009<br>Zirconia based materials have been widely used in construction of dental prosthesis because of their mechanical and aesthetical properties and a lot of money have been invested in their development, but no one of the producers considered the aging of zirconia. In this job have been demonstrated, with Raman spectroscopy, the low temperature degradation of zirconia and has been investigated the residual stress in zirconia-alumina composites at room temperature and in open-air after 8 years of aging, then have been investigated the phase trasformation of tetragonal zirconia int
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Lanzilotto, Valeria. "Self-assembling and charge transfer properties of thin organic films." Doctoral thesis, Università degli studi di Trieste, 2012. http://hdl.handle.net/10077/7362.

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2010/2011<br>In the present thesis I dealt the issue of molecular ordering and charge transfer at two types of organic-inorganic interfaces that are representative of the basic constituents of an organic electron device. I investigated i.) the influence of a selected dielectric surface on the ordering of an overlayer of several organic molecules and ii.) the electronic transport properties of a single molecular junction with a metal electrode. Both systems have been characterized by a structural and electronic point of view. Among the techniques available for structural investigation, I made
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43

Venturelli, Leonardo. "Glucose coated nanoparticles for mesenchymal cancer cells recognition." Doctoral thesis, Università degli studi di Trieste, 2015. http://hdl.handle.net/10077/10901.

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2013/2014<br>Lo scopo del presente progetto di Dottorato riguarda la possibilità di riconoscere ed identificare le cellule mesenchimali del cancro sfruttando il metabolismo iper-attivato, nonché de-regolato, delle stesse. Una delle differenze principali tra le cellule epiteliali e quelle mesenchimali, del cancro, è il metabolismo ed in particolare il così detto Effetto Warburg (da Otto Einrich Warburg il suo scopritore e sostenitore, nel 1926). Nello specifico, questo effetto riguarda la caratteristica delle cellule tumorali di preferire, come via metabolica, la glicolisi alla classica fosfori
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44

Nkoua, Ngavouka Maryse Dadina. "Conformational properties of variable density DNA nanobrushes." Doctoral thesis, Università degli studi di Trieste, 2015. http://hdl.handle.net/10077/11129.

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2013/2014<br>Advanced nanotechnologies allow the manipulation of molecules with nanoscale precision, and can be used for the production of sensitive devices for protein or nucleic acids detection for clinical use. DNA nano-assemblies are an excellent route for ultrasensitive DNA/RNA detection and for DNA-protein conjugated immobilization, for bio interaction studies, through the careful detection of single strand DNA (ssDNA) hybridization with complementary target sequences. For DNA nanoscale devices, the control of DNA surface density and conformation is crucial in order to achieve the hi
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45

Diolosà, Marina. "Development of a new nano-engineered biopolymer-based dental adhesive system." Doctoral thesis, Università degli studi di Trieste, 2015. http://hdl.handle.net/10077/11136.

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2013/2014<br>Lo scopo di questa tesi di dottorato è stato studiare l'effetto sulla durabilità dell’interfaccia adesiva del chitosano, modificato con gruppi metacrilici, con l’obiettivo di migliorare l'affidabilità clinica dei restauri dentali. Attualmente, la ricerca in questo settore mira ad aumentare la durata nel tempo del legame resina-dentina. Questa ricerca propone un nuovo concetto di sistema adesivo bi-funzionale basato su un biopolimero naturale in grado di creare doppia reticolazione covalente. Il chitosano è un polimero biocompatibile e non tossico. In questo studio è stato ipotizza
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46

Sovernigo, Enrico. "Influence of nanostructured heterojunctions on the electrical properties of photovoltaic cells." Doctoral thesis, Università degli studi di Trieste, 2011. http://hdl.handle.net/10077/4480.

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2009/2010<br>Le celle fotovoltaiche basate su strati sottili di materiali organici hanno raggiunto efficienze dell' 8.3% ed hanno le potenzialità per diventare un'alternativa a basso costo delle celle basate su silicio amorfo. Alcune delle problematiche legate alle proprietà intrinseche di generazione, separazione e trasporto delle cariche possono essere affrontate non solo con lo studio della chimica e dei processi per materiali organici e fullerene, ma anche con lo sviluppo di nuove architetture delle celle basate sul controllo e l'organizzazione alla scala del nanometro. Il presente lavoro
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47

Coceano, Giovanna. "Local measurement of breast cancer cells mechanical properties." Doctoral thesis, Università degli studi di Trieste, 2015. http://hdl.handle.net/10077/10895.

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2013/2014<br>In the last decades cell mechanics has been increasingly associated to cell health and function. Elasticity is one of the most investigated mechanical properties of cells and is now considered as a potential label free marker of cancer progression. In this Thesis I report on the characterization of cells based on their mechanical properties. Three different biophysical micromanipulation tools have been used: Optical Tweezers (OT), Atomic Force Microscopy (AFM) and Speckle Sensing Microscopy (SSM). We chose three breast cell lines selected as a model to study cancer progression
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48

Scotti, Nicola. "Laboratory evaluation of several nanofilled dental resin composites: mechanical and chemical properties." Doctoral thesis, Università degli studi di Trieste, 2015. http://hdl.handle.net/10077/10899.

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2013/2014<br>The present thesis focused on nanofilled dental resins. The first year activity focused on depth of cure analysis of nanofilled composites. The second year activity focused on hardness, depth of cure and shrinkage stress analysis of bulk fill resin composites. The third year focused on degree of conversion and hardness of nanofilled resin cements.<br>XXVII Ciclo<br>1980
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Pavan, Giovanni Maria. "Energetic and structural analysis of organic and inorganic systems- the molecular modeling potentiality." Doctoral thesis, Università degli studi di Trieste, 2010. http://hdl.handle.net/10077/3444.

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2008/2009<br>The notable progresses achieved in the medical biotechnology research allowed to identify the common genetic origin of many different pathologies. Genes that, for unknown reasons, mutate during the lifetime of the patient synthesize proteins and receptors that lose the control by grow factors. These aberrant proteins are consequently always active and give rise to a series of cascade signals that result in an uncontrolled proliferation of tumor cells. In this framework, the use of small inhibitor molecules to deactivate these proteins, and consequently to block the diseases, const
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50

Virgilio, Francesca. "Development of electrochemical sensors by nanofabrication techniques for biological and medical diagnostics." Doctoral thesis, Università degli studi di Trieste, 2014. http://hdl.handle.net/10077/9979.

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2012/2013<br>In this work the fabrication and characterization of boron-doped diamond (BDD) nanoelectrode arrays are discussed. NEAs were obtained by creating an array of nanoholes by electron beam lithography (EBL) and Nanoimprint Lithography in a thin film of polycarbonate deposited on top of the macroelectrode. This approach leads to the formation of recessed nanoelectrodes. NEAs have been characterized with cyclic voltammetry and have provided voltammetric signals controlled by pure radial diffusion. Short ss-DNA have been immobilized on polycarbonate surface and hybridization experiments
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