RICCI , Davide Francesco

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In this work, we investigate the chemical conditions for inducing a self-organized growth of 2D and ID structures of gold nanoparticles (NPs), 50 nm diameter tri-sodium citrate stabilized, assembled onto chemically modified glass substrates through 3-Aminopropyltriethatoxysilane. The aggregation process of the nanoparticles on the silanised...

We present a non-conventional, low cost and simple approach for patterning gold nanoparticles (NPs) using highly oriented PolyTetraFluoroEthylene (HOPTFE) macromolecular segments on glass substrates. Transparent and stable HOPTFE templates for NP self-assembly were prepared by sliding unidirectionally a PTFE rod across a glass substrate at a...

Il rapido sviluppo delle nanotecnologie apre vie alternative alla miniaturizzazione dei circuiti integrati schiudendo nuovi orizzonti al settore ICT. Queste prospettive sono inquadrate in questo articolo evidenziando concetti, metodiche e strumenti peculiari delle nanotecnologie, mettendo in luce i materiali più promettenti e innovativi. Si...

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The aim of this work is to fabricate ordered arrays of thiolated gold nanoparticles grafted through electrically conductive molecular tethers onto gold electrodes. Dodecanethiol-capped gold nanoparticles were synthesized in a two-phase liquid–liquid system. Cluster size selection by the vapor transfer technique was repeatedly performed in order...

We show how the analysis of the current detected during the fabrication of titanium oxide dots by AFM local anodic oxidation allows the determination of the optimal duration of bias voltage for obtaining nanostructures with higher aspect ratio. Experimental conditions to fabricate oxide dots and lines are discussed. Finally, we demonstrate that...

We investigate the effect of different voltage waveforms on the growth of titanium oxide nanodots using Atomic Force Microscope (AFM) nanolithography. The resulting oxide features are compared by taking into account the current data detected during oxidation under the application of constant and linear ramp voltages. The experimental analysis...

We analyze transient current data during the formation of titanium oxide nanodots by AFM-tip-induced anodic oxidation with the aim of getting further understanding of local oxidation kinetics. The measured current waveforms show a transition between two distinct regimes, in agreement to what was previously known of the growth process, and their...

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Single-wall carbon nanotubes (SWCNTs) are one of the most interesting materials for transparent conductive films. In this work, we show our latest results on growth of transparent nanotube networks on quartz and silicon dioxide, and a new process to make a solid-tosolid direct transfer of these networks on a polycarbonate film to obtain, at...

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In this work we present our results concerning the growth of transparent carbon nanotube networks. The networks have been successfully grown on both oxidized silicon and quartz-glass substrates. Conductive and optical properties of these transparent films are discussed and compared to those obtained with other approaches. (c) 2007 WILEY-VCH...

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10.1080/10587259308032203

In recent years there have been many improvements in quality and yield of single-walled carbon nanotubes (SWCNTs) obtained by chemical vapour deposition (CVD). Mainstream in research is focused on growing thick vertically aligned forests of SWCNTs. At the same time SWCNT films - usually obtained by spraying and filtration - are one of the most...

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The structure of thin, aggregated layers of CuS nanoparticles, grown in Langmuir-Blodgett film precursors, was investigated with atomic force microscopy along with the study of their electrical conductivity. Very thin layers revealed an essentially insulating behavior. These layers were composed of isolated particle aggregates that had a mean...

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