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Polysomnography (EOG, EEG, EMG) was carried out in 17 male children and adolescents with autistic disorder, in seven patients with mental retardation and fragile X syndrome, and in five age- and sex-matched normal male subjects. Density of rapid eye movements was not significantly different in the three groups of subjects; however, some sleep parameters(More)
In this paper, we study the role of nanoparticle shape and aperiodic arrangement in the scattering and spatial localization properties of plasmonic modes in deterministic-aperiodic (DA) arrays of metal nanoparticles. By using an efficient coupled-dipole model for the study of the electromagnetic response of large arrays excited by an external field, we(More)
We used the particle swarm optimization algorithm, an evolutionary computational technique, to design metal nanoparticle arrays that produce broadband plasmonic field enhancement over the entire visible spectral range. The resulting structures turn out to be aperiodic and feature dense Fourier spectra with many closely packed particle clusters. We conclude(More)
Arrays of metal nanoparticles play a key role in many nano-optical applications such as SERS substrates and light concentrators. In this work the T-matrix method (also known as Null-Field Method) has been extended in order to accurately calculate the near-field scattered by large arrays of metallic nanoparticles with non-spherical shape. The near-field(More)
The multilayer nanoshells symmetry breaking makes otherwise dark higher order modes visible and interacting with the dipole mode. Fano resonance could be accomplished through interferences between these modes. Here we propose a structure based on three shells of different materials (silver, silica and gold) and study the near and far field optical(More)
This work addresses the assessment of the electromagnetic disturbance induced by a composite barrier—fencing airport structures—to radio-communication electromagnetic waves. The barrier is composed of glass fiber reinforced polymer ͑GFRP͒ tubular elements installed into a concrete base. Based on the electromagnetic properties of constituent materials,(More)
In this paper, we investigate the plasmonic near-field localization and the far-field scattering properties of non-periodic arrays of Ag nanoparticles generated by prime number sequences in two spatial dimensions. In particular, we demonstrate that the engineering of plasmonic arrays with large spectral flatness and particle density is necessary to achieve(More)