No description
-
2008 (v1)PublicationUploaded on: March 31, 2023
-
2013 (v1)Publication
Here we report on a self-organised approach for the synthesis of transparent metal nanowire arrays based on defocused ion beam sputtering. The nanowire arrays supported on low cost dielectric substrates (glass slides) feature a dual functionality: they exhibit anisotropic conductivity, with sheet resistances which are reduced in comparison to...
Uploaded on: March 27, 2023 -
2010 (v1)Publication
The controlled production of nanostructures endowed with well-selected shapes and reduced dimensionality represents a multidisciplinary key activity in nanotechnology. In particular, a great effort is currently oriented at the development of metal nanoparticle arrays in order to exploit the strong field-enhancement effects associated with the...
Uploaded on: March 25, 2023 -
2014 (v1)Publication
No description
Uploaded on: April 14, 2023 -
2014 (v1)Publication
No description
Uploaded on: April 14, 2023 -
2012 (v1)Publication
Method for the synthesis of an array of metal nanowires (w) capable of supporting localized plasmon resonances, wherein 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...
Uploaded on: April 14, 2023 -
2011 (v1)Publication
No description
Uploaded on: April 14, 2023 -
2012 (v1)Publication
Il brevetto descrive la sintesi auto-organizzata di Nanofili metallici supportati su substrati a basso costo di vetro. I nanofili metallici presentano bassa resistenza elettrica di strato inferiore ai 5 Ohm sq, buona trasparenza ottica. Vantaggiosamente inoltre i nanofili metallici supportano risonanza plasmoniche localizzate. Queste proprietà...
Uploaded on: April 14, 2023 -
2012 (v1)Publication
No description
Uploaded on: March 31, 2023 -
2008 (v1)Publication
Here we report on the development of an unconventional approach for the physical synthesis of laterally ordered self-organized arrays of metallic nanowires supported on nanostructured dielectric templates. The method, based on a combination of nanoscale patterning of the glass substrate by ion beam sputtering with shadow deposition of the metal...
Uploaded on: April 14, 2023 -
2008 (v1)Publication
We report on the self-organized patterning of polycrystalline metal films supported on dielectric substrates using defocused Ar+ ion-beam sputtering at glancing incidence. The data demonstrate that a nonflat initial surface morphology does plays a critical role in triggering self-organization during the early stages, where the distribution of...
Uploaded on: April 14, 2023 -
2013 (v1)Publication
Nanostructured glass substrates endowed with high aspect ratio one-dimensional corrugations are prepared by defocused ion beam erosion through a self-organized gold (Au) stencil mask. The shielding action of the stencil mask is amplified by co-deposition of gold atoms during ion bombardment. The resulting glass nanostructures enable broadband...
Uploaded on: April 14, 2023 -
2010 (v1)Publication
No description
Uploaded on: April 14, 2023 -
2013 (v1)Publication
Gold nanoparticles deposited on self-organized nano-ripple quartz substrates have been studied by spectroscopic Mueller matrix ellipsometry. The surface was found to have biaxial anisotropic optical properties. For electric field components normal to the ripples the periodic and disconnected nature of the in plane nanowires gives rise to an...
Uploaded on: May 13, 2023 -
2013 (v1)Publication
The interaction of localized surface plasmon resonances (LSPRs) with the photonic modes in an opal photonic crystal is reported. Gold nanocrescents are evaporated at glancing angles over both microsphere monolayers and artifi cial opals. Microsphere monolayers allow the three localised plasmonic resonances observed in the nanocrescent optical...
Uploaded on: October 11, 2023 -
2013 (v1)Publication
The generalized Snell's law of refraction was introduced by F. Capasso in 2011. One consequence of the law is that resonant metallic nanostructures at the interface between two dielectrics can bend the light in a controlled way. Alternatively, by measuring the bent of a beam of light induced by a nanopatterned metallic surface it is possible to...
Uploaded on: May 11, 2023 -
2011 (v1)Publication
Here we report the experimental observation of circular dichroism in the second-harmonic field (800-400 nm conversion) generated by self-organized gold nanowire arrays with subwavelength periodicity (160 nm). Such circular dichroism, raised by a nonlinear optical extrinsic chirality, is the evident signature of the sample morphology. It arises...
Uploaded on: April 14, 2023 -
2012 (v1)Publication
No description
Uploaded on: May 11, 2023 -
2017 (v1)Publication
A gold nanowired grid polarizer is studied in the mid-IR range by means of spectroscopic Mueller matrix ellipsometry. This material is also an example of a so-called 2-dimensional hyperbolic metamaterial/metasurface, and produced by low-cost large area scalable manufacturing techniques. We present the IR spectroscopic Mueller matrix optical...
Uploaded on: March 27, 2023 -
2012 (v1)Publication
Here we investigated the asymmetric transmission and the anomalous refraction introduced by a metasurface of bent gold nanowires. The refraction follows the generalized Snell's law that takes into account the resonant behavior of metallic nanostructures located at the interface between two dielectrics. Measurements performed in the linear...
Uploaded on: May 11, 2023 -
2011 (v1)Publication
We explore the effect of re-radiation in surface-enhanced Raman scattering (SERS) through polarization-sensitive experiments on self-organized gold nanowires on which randomly oriented Methylene Blue molecules are adsorbed. We provide the exact laws ruling the polarized, unpolarized, and parallel- and cross-polarized SERS Intensity as a...
Uploaded on: April 14, 2023 -
2014 (v1)Publication
ince its discovery, surface-enhanced Raman spectroscopy (SERS) has pushed researchers' interest to develop different kinds of active substrates for high sensitivity molecular detection. Defocused ion beam sputtering (IBS) represents a viable route for the production of large scale, highly reproducible SERS-active substrates consisting of...
Uploaded on: May 13, 2023 -
2009 (v1)Publication
A tetrairon(III) single-molecule magnet is deposited using a thermal evaporation technique in high vacuum. The chemical integrity is demonstrated by time-of-flight secondary ion mass spectrometry on a film deposited on Al foil, while superconducting quantum interference device magnetometry and alternating current susceptometry of a film...
Uploaded on: March 31, 2023 -
2010 (v1)Publication
Successful attempts to deposit SMMs in UHV conditions have been carried out with a tetranuclear iron(III) cluster [ 9 ] and lanthanide bis-phthalocyaninato (LnPc 2 ) complexes. [ 10 , 11 ] For the latter the seminal works of Ishikawa et al. [ 12 ] showed that slow dynamics of the magnetization in these mononuclear complexes is originated...
Uploaded on: April 14, 2023