207 Result(s)
within
English
Electronics and Microelectronics, Instrumentation
Engineering, general
Physical Chemistry
**e **an
Chapter
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Chapter
A Spectroscopic Approach to Carbon Materials for Energy Storage
In this Chapter we present the contribution offered by vibrational spectroscopy in the characterization of carbon–based materials. The necessary conceptual tools will be introduced in Sect. 2 and Sect. 3; the ...
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Characterisation of the Growth Mechanism during PECVD of Multiwalled Carbon Nanotubes
The growth mechanism of multiwalled carbon nanotubes has been a subject of considerable research interest. Published results show that nanotubes may be formed by a variety of methods using different combinatio...
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Defects in CVD Diamond Films from Their Response as Nuclear Detectors
CVD diamond films can be used to realize nuclear detectors with outstanding working capability in harsh environments. Since efficient particle detection requires high drift lengths of the carriers produced by ...
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Hard Amorphous Hydrogenated Carbon Films and Alloys
Hard hydrogenated amorphous carbon films are presently being used in a wide variety of applications as protective coatings. The properties of the carbon films are essentially controlled by the ratio between th...
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Elastic and Structural Properties of Carbon Materials Investigated by Brillouin Light Scattering
Brillouin light scattering (BS) is a nondestructive technique exploited to investigate collective excitations in solids: acoustic phonons, spin waves, magnons and density fluctuations. In particular, it permit...
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Measurements of Defect Density Inside CVD Diamond Films Through Nuclear Particle Penetration
Fast nuclear particles (light or heavy ions), passing through a diamond film, deposit energy by ionization. It is possible to collect the developed charges by applying an electric voltage through both sides of...
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Modeling of the Transport Properties of Diamond Radiation Sensors
A fully quantitative model of electronic transport in polycrystalline chemical vapour deposited (pCVD) diamond sensors is presented, predicting the conductivity behavior of diamond devices during and after exp...
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Optical Characterisation of High-Quality Homoepitaxial Diamond
Recently, great effort has been devoted to the deposition of homoepitaxial diamond for electronic applications. Its single-crystal nature avoids the problems due to grain boundaries in polycrystalline diamond ...
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Raman Spectroscopy of CVD Carbon Thin Films Excited by Near-Infrared Light
The interpretation of the Raman spectra of amorphous carbon thin films is still controversial. The concept of their decomposition into D and G peaks does not work in some cases, when presence of additional ban...
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Raman Spectra and Structure of sp 2 Carbon-Based Materials: Electron–Phonon Coupling, Vibrational Dynamics and Raman Activity
We focus on several common features that dominate the Raman spectra of carbon materials whenever delocalised π electrons are present. A molecular approach, based on high–level quantum chemical calculations and ex...
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UV-Induced Photoconduction in Diamond
Owing to its physical properties, diamond is a very promising candidate for UV photon detection. The synthesis of very high quality polycrystalline diamond thick films and single crystals is presently accompli...
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Aid of Scaling Laws in the Achievement of a Well-Controlled Film Deposition Process
Scaling laws are profitably applied in all the scientific disciplines. Approximated solutions constitute a valuable aid for the analysis of complex systems and physical processes and, generally, for handling p...
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Biocompatibility, Cytotoxicity and Bioactivity of Amorphous Carbon Films
In this work we investigate the possibility of using an amorphous carbon layer as a bioactive coating that promotes bone ingrowth for medical implants in direct contact with bone. The initial step was to confi...
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Correlation Between Local Structure and Film Properties in Amorphous Carbon Materials
A discussion of the various amorphous carbon and amorphous hydrogenated carbon films is presented. A link between sp 2, sp 3 and H contents and the mechanical and optoele...
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Formation, Atomic Structures and Properties of Carbon Nanocage Materials
Various carbon nanocage fullerene materials (clusters, metallofullerenes, onions, nanotubes, nanohorns and nanocapsules) were synthesized by electron-beam irradiation, chemical reaction, hybrid arc discharge, ...
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Effects of Nanoscale Clustering in Amorphous Carbon
In this review the effects of clustering associated with the sp 2 and sp 3 phases of amorphous carbon thin films are examined. We highlight that many of the optical and e...
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Ion Microscopy on Diamond
Because of its physical properties (strong radiation hardness, wide energy gap with a consequent extremely low dark current, very large electron and hole mobility) diamond is a very good candidate for nuclear ...
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Electrical Resistivity and Real Structure of Magnetron-Sputtered Carbon Films
The resistivity and structure of DC magnetron-sputtered carbon films is studied. The film structure is examined by Raman spectroscopy, transmission electron microscopy, and electron diffraction. The films reve...
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Laser Ablation-Deposited CN x Thin Films
Amorphous CN x thin films were deposited at room temperature by pulsed laser ablation of graphite targets in a controlled atmosphere using both N2 and N2/Ar gas mixtures. The struct...
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Nucleation Process of CVD Diamond on Molybdenum Substrates
Nucleation is a critical step of diamond growth by chemical vapour deposition (CVD), and its control is essential for optimising the properties of the synthesised material. In this work, diamond samples have b...
