Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 32 for “"Carbon films"”.
-
Electrodeposition of Diamond-like Carbon Films
Electrodeposition of diamond-like carbon (DLC) films was studied on different substrates using two different electrochemical methods. The first electrochemical method using a three-electrode system was studied to successfully deposit hydrogenated DLC films on Nickel, Copper and Brass substrates. …
-
Ion plated carbon films and their tribological properties
… madewith ion plating in abnormal glow discharge.Carbon films have been deposited by both chemical vapour depositionand ion plating using methane cracking and arc and electron beam gunevaporation sources. Triode ion plating has also been used. It isfound that the best way for depositing thick …
-
Evaluation of diamond-like carbon films for lubrication in space
… for space applications. However, diamond-like carbon coatings have been increasingly studied as potential candidates for preparation of wear resistant materials with low friction in vacuum conditions. This thesis describes in-vacuum investigations made on a variety of formulations of …
-
Characterization of Amorphous Carbon Films for Mask Protection during Ion Beam Bombardment
… refine a process to coat masks with diamond-like carbon (DLC) to protect them from ion bombardment. This continues the work of Wasson, Hudek, Nounu, and Abichandani, who pioneered deposition techniques to create amorphous carbon films with low initial compressive stress, which remains constant to …
-
Improvement of Homogeneity and Adhesion of Diamond-Like Carbon Films on Copper Substrates
… method is used to deposit diamond-like carbon (DLC) films on copper substrates via anodic oxidation at low temperature. These films are characterized using Raman spectroscopy, Fourier transform infrared spectroscopy and scanning electron microscopy. Homogeneity of these films is studied …
-
Investigation of Structure and Properties of Low Temperature Deposited Diamond-Like Carbon Films
… a novel method for fabrication of diamond-like carbon (DLC) films on metal substrates. In this work, DLC was electrochemically deposited on different substrates based on an anodic oxidation cyclization of acetylene in liquid ammonia. Successfully anodic deposition was carried out for DLC onto …
-
(e,2e) spectroscopic investigations of the spectral momentum densities of thin carbon films
… a definite dispersion relation ε(q) in amorphous carbon is demonstrated. The a-C band structure appears to be more similar to that of graphite than to that of diamond, however it differs significantly from both in some respects. The measured spectral momentum density seems compatible with a model …
-
Structural, electrical and optical studies on the effects of rapid thermal processing on silicon-germanium-carbon films
A structural, electrical and optical study on the effect of rapid thermal processing on strained Si1i?-xGex, Si1i?-xi?-yGexCy alloys was reported in this thesis. Structural characterization showed that, when annealed at temperature higher than 900i??C, substitutional C changed to more stable phase …
-
Study of PECVD Films Containing Flourine and Carbon and Diamond Like Carbon Films for Ultra Low Dielectric Constant Interlayer Dielectric Applications
… consumption and parasitic capacitance. a:C-F films that are thermally stable at 400C were deposited using tetrafluorocarbon and disilane (5% by volume in Helium) as precursors. The bulk dielectric constant (k) of the film was optimized from 2.0 / 2.2 to 1.8 / 1.91 as-deposited and after heat …
-
Chemical vapor deposition of polymeric films
… enhanced chemical vapor deposition (PECVD) of carbon films with PPN structure using PTCDA as precursor were carried out under different conditions. There is only limited information in literature on the synthesis of PPN films by PECVD process, which may allow deposition at a higher rate with …
-
Control of Long Range Orientation in Ordered Mesoporous Carbon Thin Films
Ordered mesoporous carbons are appealing for many application areas, where their function and performance depend critically on structure. Thus, alignment of these mesopores by scalable methods is of notable interest. Cooperative self-assembly provides a facile route to fabrication of ordered …
-
Rough Surface Interactions of Micro/nano-Scale Contact Systems
… First, nanomechanical properties of ultra-thin carbon films such as hardness and elastic modulus have been investigated using a newly developed nanoindentation technique and custom-built high-resolution nanoindentation system, which enabled reliable measurements of hardness and elastic modulus …
-
Nanostructured diamond-like carbon by dual pulsed laser ablation-pulsed gas feeding
Diamond-like carbon films is a metastable form of carbon containing mixture of sp3 and sp2 hybridization. In the previous decades Diamond-like carbon has been studying widely due to its unique properties resembling those of diamond. These properties exhibit the high hardness, high wear resistance, …
-
Characterization of a novel methyl radical source and related thin film growth studies
… species also became significant.;Several thin films were grown using the CH3 radical source. These were characterized using Auger electron spectroscopy (AES), atomic force microscopy (AFM), and secondary electron microscopy (SEM). At a sample temperature of 652°C, silicon carbide (SiC-C) …
-
The Stopping of Energetic Si, P and S Ions in Ni, Cu, Ge and GaAs Targets
… analysis and surface characterization of thin films using ion beam analysis (IBA). These values are also of interest in radiobiology and radiotherapy, and in ion- implantation technology where shrinking feature sizes puts high demands on the accuracy of range calculations. A theory that …
Page 1 of 2