UniversitÁ Degli Studi Di Genova

Corrado Boragno

Ugo Valbusa

Andrea Toma

Alessandro Garibbo

Francesco Gagliardi

Francesco Buatier De Mongeot

Daniele Chiappe

Gregorio Boccalero

Giuseppe Firpo

Luca Repetto

Elena Angeli

Process for the preparation of a superhydrophobic film comprising the steps of applying a hydrophobic polymer in the liquid phase on a surface so as to form a layer of hydrophobic polymer, applying on said layer of hydrophobic polymer a membrane having a porosity of between 10and 6&#xd7;10pores/cmin which the pores have a diameter smaller than or equal to 3 &#x3bc;m, subjecting said layer of hydrophobic polymer to a thermal treatment so as to form a superhydrophobic film, and removing said membrane.

Process for the preparation of superhydrophobic film

A method is for the synthesis of an array of metal nanowires (w) capable of supporting localized plasmon resonances. A metal film (M) deposited on a planar substrate (D) is irradiated with a defocused beam of noble gas ions (IB) under high vacuum, so that, with increasing ion doses a corrugation is produced on the metal film surface, formed by a mutually parallel nanoscale self-organized corrugations (r). Subsequently, the height of the self-organized corrugations peaks is increased relative to the valleys (t) interposed therebetween. Then the whole the metal film is eroded so as to expose the substrate at the valleys, and to mutually disconnect the self-organized corrugations, thereby generating the array of metal nanowires. Finally, the transversal cross-section of the nanowires is reduced in a controlled manner so as to adjust the localized plasmon resonances wavelength which can be associated thereto. The nanowires array constitutes an electrode of an improved photonic device.

Method for the synthesis of an array of metal nanowire capable of supporting localized plasmon resonances and photonic device comprising said array

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Genoa, Italy

Corrado Boragno