Dr. Claudio Ferrari
CNR - IMEM
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Academic Career Length
33Years (1994-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
View All Publications1 January 2020 in Solar Energy Materials and Solar Cells
Journal Article
Elisa ArtegianiJMJonathan D. Major
Jonathan D. MajorHSHuw Shiel
Huw ShielVDVin Dhanak
Vin Dhanak
Claudio FerrariARAlessandro Romeo
Alessandro Romeo1 May 2012 in Optical Engineering
Journal Article
EBElisa Buffagni
Elisa Buffagni
Claudio Ferrari
Francesca RossiLMLaura Marchini
Laura Marchini
AZAndrea Zappettini
Andrea ZappettiniCurved crystals, instead of flat mosaic crystals, can be used as optical elements of a Laue lens for hard x- and gamma-ray astronomy to increase the diffraction efficiency. We propose to achieve the bending of the crystals by a controlled surface damaging, which introduces defects in a layer of few tens nanometers in thickness undergoing a highly compressive strain. Several oriented silicon and gallium arsenide wafer crystals have been treated. The local and mean curvature radii of each sample have been determined by means of high resolution x-ray diffraction measurements in Bragg condition at low energy (8 keV). Silicon samples showed spherical curvatures, whereas GaAs-treated samples evidenced elliptical curvatures with major axes corresponding to the crystallographic directions. Curvature radii between 3 and 70 m were easily obtained in wafers of different thicknesses. The characterization of GaAs samples performed in Laue geometry at gamma-ray energy of 120 keV confirmed the increase of the diffraction efficiency in the bent crystals.
Journal Article
Claudio FerrariGAGiovanni Attolini
Giovanni AttoliniMBMatteo Bosi
Matteo BosiCFCesare Frigeri
Cesare FrigeriPFpaola frigeri
paola frigeriFRFrancesco Rispoli
Francesco Rispoli +14
Nitroaromatic explosives are the most common explosives, and their detection is important to public security, human health, and environmental protection. In particular, the detection of solid explosives through directly revealing the presence of their vapors in air would be desirable for compact and portable devices. In this study, amino-functionalized carbon nanotubes were used to produce resistive sensors to detect nitroaromatic explosives by interaction with their vapors. Devices formed by carbon nanotube networks working at room temperature revealed trinitrotoluene, one of the most common nitroaromatic explosives, and di-nitrotoluene-saturated vapors, with reaction and recovery times of a few and tens of seconds, respectively. This type of resistive device is particularly simple and may be easily combined with low-power electronics for preparing portable devices.
26 October 2013 in Journal of Applied Crystallography
Journal Article
Claudio FerrariEBElisa Buffagni
Elisa Buffagni
EBElisa Bonnini
Elisa Bonnini
DKDusan Korytar
Dusan Korytar
17 August 2012 in Journal of Engineering for Gas Turbines and Power
Journal Article
EBEnrico Barbieri
Enrico Barbieri
Andrea De PascaleClaudio Ferrari
Francesco Melino
Mirko Morini
Michele Pinelli +1
The present study deals with the integration between a thermo-photo-voltaic generator (TPV) and an organic Rankine cycle (ORC), named here TORCIS (thermo-photo-voltaic organic Rankine cycle integrated system). The investigated TORCIS system is suitable for combined heat and power (CHP) applications, such as residential and tertiary sector users. The aim of the research project on this innovative system is the complete definition of the components’ design and the preprototyping characterization of the system, covering all the unresolved issues. This paper shows the results of a preliminary thermodynamic analysis of the system. In more details, TPV is a system to convert, into electric energy, the radiation emitted from an artificial heat source (i.e., combustion of fuel) by the use of photovoltaic cells; in this system, the produced electric power is strictly connected to the thermal one, as their ratio is almost constant and cannot be changed without severe loss in performance. The coupling between TPV and ORC allows us to overcome this limitation and to realize a cogenerative system, which can be regulated with a large degree of freedom, changing the electric-to-thermal power ratio. The paper presents and discusses the TORCIS achievable performance, highlighting its potential in the field of distributed generation and cogenerative systems.
1 April 2012 in Optical Engineering
Journal Article
Claudio FerrariEBElisa Buffagni
Elisa Buffagni
LMLaura Marchini
Laura Marchini
AZAndrea Zappettini
Andrea ZappettiniGaAs, Cu, CdTe, and CdZnTe crystals have been studied as optical elements for lenses for hard x-ray astronomy. High-resolution x-ray diffraction at 8 keV in Bragg geometry and at synchrotron at energies up to 500 keV in Laue geometry has been used. A good agreement was found between the mosaicity evaluated in Bragg geometry at 8 keV with x-ray penetration of the order of few tens of micrometers and that derived at synchrotron in transmission Laue geometry at higher x-ray energies. Mosaicity values in a range between a few to 150 arcsec were found in all the samples but, due to the presence of crystal grains in the cm range, CdTe and CdZnTe crystals were found not suitable. Cu crystals exhibit a mosaicity of the order of several arcmin; they indeed were found to be severely affected by cutting damage which could only be removed with a very deep etching. The full width at half maximum of the diffraction peaks decreased at higher x-ray energies showing that the peak broadening is affected by crystallite size. GaAs crystals grown by Czochralski method showed a mosaic spread up to 30 arcsec and good diffraction efficiency up to energies of 500 keV. The use of thermal treatments as a possible method to increase the mosaic spread was also evaluated.
About Me
Senior researcher at IMEM, National Research Council,
Author of more than 220 papers published in international ISI journals with international referees (H index = 33), providing 20 invited lectures at international congresses, and the author of six book chapters.
RESEARCH ACTIVITIES
From 2005 up to now: Materialsand devices for photovoltaic energy, in particular in the field of micro-cogeneration, thermophotovoltaic micro-cogenerators, low-bandgap photovoltaic cells, and selective emitters for thermophotovoltaics
EXPERIENCE IN PROJECT MANAGING
2018: Principal investigator of the international project "Portable sensors for unmanned explosive detection" funded by NATO.
2018: CNR Unit responsible for the INAF-ASI project “Increase in the technological readiness level for the realization of hard X-/soft gamma-ray Laue optics”.
2009--2013: Unit responsible of the Project “LAUE: una lente per raggi gamma” funded by Italian Space Agency (ASI) contract n. I/068/09/0.
2009--2013: Responsible for the IMEM unit of the project “New technologies for the energy efficiency and use of the renewable resources” in the frame of the CNR-Lombardia region agreement.
2006--2009: Responsible for the project of relevance “Growth and characterization of luminescent materials and devices for optoelectronic and thermofotovoltaic applications” between IMEM-CNR and Nanjing University, Laboratory of Solid State Microstructures, funded by the Ministry of Foreign Affairs.