Search results for "Enna"
showing 10 items of 748 documents
Altri cieli: appunti sull'esilio di Arnold Schoenberg
1996
Sospeso fra due mondi. Appunti per ina biografia di Erich Wolfgang Korngold
2011
Il saggio traccia un breve profilo biografico di E.W. Korngold (1897-1957), con particolare riferimento alle opere del "periodo americano" e alla sua 'attività nell'ambito del cinema hollywoodiano.
Mittersill 101. Il caso Anton Webern
1996
Il saggio ricostruisce il quadro della morte di Anton Webern (15 settembre 1945) e descrive la struttura/drammaturgia dello spettacolo multimediale di Roberto Andò "Mittersill 1010. Variazioni sul caso Anton Webern".
"Ognuno per sé e Dio contro tutti!". Ricordi di Werner Herzog in Sicilia
2012
Il testo rievoca alcuni momenti del primo soggiorno in Sicilia di Werner Herzog, per la regia di una nuova produzione del "Flauto magico" di Mozart al Teatro Massimo Bellini di Catania (dicembre 1991). In particolare, vengono poste in rilievo la concezione registica di Herzog e il suo approccio al capolavoro mozartiano.
Sex-specific interaction between arbuscular mycorrhizal and dark septate fungi in the dioecious plant Antennaria dioica (Asteraceae).
2012
Male and female plants of dioecious species often differ in their resource demands and this has been linked to secondary sexual dimorphism, including sex-specific interactions with other organisms such as herbivores and pollinators. However, little is known about the interaction between dioecious plants and fungal root endophytes. Plants may be simultaneously colonised by arbuscular mycorrhizal (AM) and dark septate (DS) fungi. While it is well established that AM mutualism involves reciprocal transfer of photosynthates and mineral nutrients between roots of host plants and these fungi, the role of DS fungi remains controversial. Here, we report the temporal and spatial variation in AM and …
Review of Infrared Nanoantennas for Energy Harvesting
2016
The Sun is the greatest source of energy providing a continuous stream of power; its exploitation has stimulated several approaches and technologies to directly or indirectly achieve renewable energy. New devices, which exploit the thermal radiation created by the Sun, that is transferred in the form of electromagnetic waves into free space, and finally absorbed by the surface of the Earth, are under study. The aim of this contribution is to critically compare advantages and disadvantages of new types of suitable antennas operating at nanometers wavelengths, called nanoantennas, for infrared energy harvesting, focusing on the state of the art and its perspectives.
A mid-IR Plasmonic Graphene Nanorectenna-based Energy Harvester to Power IoT Sensors
2022
In this paper, the design of a graphene arrow- bowtie nanoantenna mid-IR energy-harvester to power IOT wireless sensor is presented. For the first time, a sensitivity analysis of the mid-IR nanoantenna resonant frequencies in terms of different graphene number of sheets and chemical potential (μCP) without substrate and on a two-layer substrate composed of SiO2 and Si, is carried out. The obtained simulation results by 3D CST 2020 are useful to design an efficient infrared nanorectenna, composed of the nanoantenna and a rectifying MIM diode inside the gap. The analysis of the complete energy-harvester (EH), composed of an NxM nanorectenna array, a low-pass filter, and a DC-DC converter, is …
Optical Nanoantennas for Energy Harvesting
2016
In the last decade, the increasing demand for renewable energy has been leading to the development of new devices, which overcome the disadvantages of the traditional photovoltaic conversion and exploit the thermal radiation created by the Sun, that is transferred in the form of electromagnetic waves into free space and finally absorbed by the surface of the Earth [1-2]. These new devices, called nanoantennas, have only recently been considered thanks to the development of electron beam lithography and similar techniques. Nanoantennas operate at nanometers wavelengths and their dimensions range from a few hundred nanometres to a few microns. They exhibit potential advantages in terms of pol…
A 28.3 THz Plasmonic Graphene Arrow-bowtie Nanoantenna for Energy Harvesting
2021
In this paper, the design of a 28.3 aor1 THz graphene arrow bowtie nanoantenna for IR energy harvesting applications astr is presented. A sensitivity analysis of the resonance frequency in terms of geometric parameters acty number of graphene sheets acny doping, and thickness of the substrate is reported. The simulations are carried out using the CST 2020 3D simulator.
A Novel Plasmonic Nanoantenna for High Efficiency Energy Harvesting Applications
2020
In this paper, the results of a geometric investigation of plasmonic nanoantennas for energy harvesting applications in terms of field enhancement and available power are presented. Optimum performances are obtained by a particular arrow-shaped bowtie nanoantennas geometry. The novel nanoantenna geometry is here presented. The simulations of the novel nanoantennas made of aluminium, on a three-layers substrate, composed by silicon, silicon oxide, and aluminium, carried out with CST 2018 tool, are reported and compared with the classical bowtie nanoantennas ones. This study can guide both the engineering and the fabrication of plasmonic nanoantennas.