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Author : Omar Alshekhli
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (13 download)
Download or read book PULSED ELECTRON DEPOSITION AND CHARACTERIZATION OF NANOCRYSTALLINE DIAMOND THIN FILMS. written by Omar Alshekhli and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microstructural, Mechanical and Antibacterial Characterization of Nanocrystalline Diamond Thin Films written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanocrystalline diamond thin films exhibit unusual hardness, wear resistance, and corrosion resistance properties, and are currently being considered for use in orthopaedic, ophthalmic, and other medical implants. The purpose of this study was to evaluate the hardness, Young's modulus, microscratch adhesion, and antimicrobial properties of nanocrystalline diamond thin films. Microwave plasma enhanced chemical vapor deposition (MPCVD) was used to deposit nanocrystalline diamond thin films on p-type silicon wafers. Raman spectroscopy, scanning electron microscopy (SEM), and high resolution transmission electron microscopy (HRTEM) were used to determine quality and phase purity of the nanocrystalline diamond thin films. The thin films consisted of diamond nodules that varied in morphology (size=60-600 nm). HRTEM showed that the films contained rectangular crystallites with dimensions between 2 -- 4 nm. Raman spectroscopy confirmed that the thin film sample contained both tetrahedrally-bonded and amorphous carbon phases. The hardness and Young's modulus values for the nanocrystalline diamond thin films were 29.4 " 11.9 GPa to 72.0 " 10.7 GPa and 346.4 " 98 GPa to 551.8 " 71.5 GPa, respectively. Microscratch adhesion testing was performed on the nanocrystalline diamond films to examine the functional adhesion strength between the diamond films and the silicon substrates. The nanocrystalline diamond/silicon wafer systems demonstrated very good film adhesion (LCN H"3.1 -- 3.4 N). A CDC biofilm reactor was utilized to incubate and grow Pseudomonas fluorescens on the surfaces of the nanocrystalline diamond thin films and stainless steel coupons. Quantitative data showed that bacterial attachment on the nanocrystalline diamond thin films was quite significant and comparable to that on stainless steel surfaces. This work suggests that nanocrystalline diamond thin films are good candidate materials for biomedical implants but are susceptible.
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Author : Venkata Satya Siva Srikanth Vadali
Publisher :
ISBN 13 : 9783832275112
Total Pages : 157 pages
Book Rating : 4.2/5 (751 download)
Download or read book Deposition and Characterization of Nanocrystalline Diamond/β-SiC [diamond Beta SiC] Composite Film System written by Venkata Satya Siva Srikanth Vadali and published by . This book was released on 2008 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jamal Sana Lewis
Publisher :
ISBN 13 :
Total Pages : 69 pages
Book Rating : 4.:/5 (123 download)
Download or read book Microstructural, Mechanical and Antibacterial Characterization of Nanocrystalline Diamond Thin Films written by Jamal Sana Lewis and published by . This book was released on 2007 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keywords: biomedical coatings, antibacterial, nanocrystalline diamond, mechanical properties.
Author : Sam Zhang
Publisher : Imperial College Press
ISBN 13 : 1860949975
Total Pages : 628 pages
Book Rating : 4.8/5 (69 download)
Download or read book Nanocomposite Thin Films and Coatings written by Sam Zhang and published by Imperial College Press. This book was released on 2007 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: Materials development has reached a point where it is difficult for a single material to satisfy the needs of sophisticated applications in the modern world. Nanocomposite films and coatings achieve much more than the simple addition of the constitutents OCo the law of summation fails to work in the nano-world. This book encompasses three major parts of the development of nanocomposite films and coatings: the first focuses on processing and properties, the second concentrates on mechanical performance, and the third deals with functional performance, including wide application areas ranging from mechanical cutting to solar energy and from electronics to medicine. Sample Chapter(s). Chapter 1: Magnetron Sputtered Hard and Yet Tough Nanocomposite Coatings With Case Studies: Nanocrystalline Tin Embedded in Amorphous SiNx (187 KB). Contents: Magnetron Sputtered Hard and Yet Tough Nanocomposite Coatings with Case Studies: Nanocrystalline TiN Embedded in Amorphous SiN x (S Zhang et al.); Magnetron Sputtered Hard and Yet Tough Nanocomposite Coatings with Case Studies: Nanocrystalline TiC Embedded in Amorphous Carbon (S Zhang et al.); Properties of Chemical Vapor Deposited Nanocrystalline Diamond and Nanodiamond/Amorphous Carbon Composite Films (S C Tjong); Synthesis, Characterization and Applications of Nanocrystalline Diamond Films (Z-Q Xu & A Kumar); Properties of Hard Nanocomposite Thin Films (J Musil); Nanostructured, Multifunctional Tribological Coatings (J J Moore et al.); Nanocomposite Thin Films for Solar Energy Conversion (Y-B Yin); Application of Silicon Nanocrystal in Non-Volatile Memory Devices (T P Chen); Nanocrystalline Silicon Films for Thin Film Transistor and Optoelectronic Applications (Y-J Choi et al.); Amorphous and Nanocomposite Diamond-Like Carbon Coatings for Biomedical Applications (T I T Okpalugo et al.); Nanocoatings for Orthopaedic and Dental Application (W-Q Yan). Readership: Undergraduates, postgraduates, researchers, scientists, college and university professors, research professionals, technology investors and developers, research enterprises, R&D research laboratories, academic and research libraries."
Author : Shih-Feng Chou
Publisher :
ISBN 13 :
Total Pages : 174 pages
Book Rating : 4.:/5 (144 download)
Download or read book Synthesis and Characterization of Diamond Thin Films by Microwave Plasma-enhanced Chemical Vapor Deposition (MPECVD) written by Shih-Feng Chou and published by . This book was released on 2005 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diamond thin films are deposited on silicon wafers by MPECVD process with the presence of methane, argon, and hydrogen gases. The reaction chamber is designed with an internal microwave reaction cavity and a high-pressure pocket for improving deposition conditions. Scanning electron microscopy reveals tetrahedral and cauliflower-shaped crystals for polycrystalline diamond and nanocrystalline diamond films, respectively. Spectroscopy ellipsometer studies indicate that diamond-like carbon (DLC) films are deposited with a thickness of 700 nm. Fourier transform infrared spectroscopy shows C-H stretching in the range from 2800 cm -1 to 3000 cm -1 . Nanoindentation is performed on DLC films with an average hardness of 10.98 GPa and an average elastic modulus of 90.32 GPa. The effects of chamber pressure, microwave forward power, and gas mixture on the plasma chemistry are discussed. Substrate temperature has a significant influence on film growth rate, and substrate pretreatment can enhance the quality of diamond films.
Author : Nicolas Wöhrl
Publisher :
ISBN 13 :
Total Pages : 175 pages
Book Rating : 4.:/5 (725 download)
Download or read book Synthesis and Characterization of Nanocrystalline Diamond Films written by Nicolas Wöhrl and published by . This book was released on 2010 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Olga A. Shenderova
Publisher : William Andrew
ISBN 13 : 1437734669
Total Pages : 581 pages
Book Rating : 4.4/5 (377 download)
Download or read book Ultrananocrystalline Diamond written by Olga A. Shenderova and published by William Andrew. This book was released on 2012-12-31 with total page 581 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultrananocrystalline Diamond: Synthesis, Properties, and Applications is a unique practical reference handbook. Written by the leading experts worldwide it introduces the science of UNCD for both the R&D community and applications developers using UNCD in a diverse range of applications from macro to nanodevices, such as energy-saving ultra-low friction and wear coatings for mechanical pump seals and tools, high-performance MEMS/NEMS-based systems (e.g. in telecommunications), the next generation of high-definition flat panel displays, in-vivo biomedical implants, and biosensors. This work brings together the basic science of nanoscale diamond structures, with detailed information on ultra-nanodiamond synthesis, properties, and applications. The book offers discussion on UNCD in its two forms, as a powder and as a chemical vapor deposited film. Also discussed are the superior mechanical, tribological, transport, electrochemical, and electron emission properties of UNCD for a wide range of applications including MEMS/ NEMS, surface acoustic wave (SAW) devices, electrochemical sensors, coatings for field emission arrays, photonic and RF switching, biosensors, and neural prostheses, etc. Ultrananocrystalline Diamond summarises the most recent developments in the nanodiamond field, and presents them in a way that will be useful to the R&D community in both academic and corporate sectors Coverage of both nanodiamond particles and films make this a valuable resource for both the nanotechnology community and the field of thin films / vacuum deposition Written by the world’s leading experts in nanodiamond, this second edition builds on its predecessor’s reputation as the most up-to-date resource in the field
Author : Ashok Kumar Dua
Publisher : Trans Tech Publications Ltd
ISBN 13 : 3035706352
Total Pages : 110 pages
Book Rating : 4.0/5 (357 download)
Download or read book Diamond Thin Films - An Emerging Technology: Past, Present and Future written by Ashok Kumar Dua and published by Trans Tech Publications Ltd. This book was released on 2004-08-08 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diamond, as well as being a precious gem, is a versatile material par excellence. No other material comes anywhere near to matching its properties, which are both extreme, and also expressed in rare combinations. However, natural diamonds, and those synthesised under high sandpressure temperatures, are too expensive or small for many technological applications. These limitations can be overcome by using large-area diamond coatings; chemically bonded to inexpensive non-diamond surfaces. The consequent economic advantages provide the driving force for much diamond-related research and technology.
Author :
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (683 download)
Download or read book Morphology and Electron Emission Properties of Nanocrystalline CVD Diamond Thin Films written by and published by . This book was released on 1998 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanocrystalline diamond thin films have been produced by microwave plasma-enhanced chemical vapor deposition (MPECVD) using C60/Ar/H2 or CH4/Ar/H2 plasmas. Films grown with H2 concentration (less-than or equal to) 20% are nanocrystalline, with atomically abrupt grain boundaries and without observable graphitic or amorphous carbon phases. The growth and morphology of these films are controlled via a high nucleation rate resulting from low hydrogen concentration in the plasma. Initial growth is in the form of diamond, which is the thermodynamic equilibrium phase for grains (less-than or equal to)5 nm in diameter. Once formed, the diamond phase persists for grains up to at least 15-20 nm in diameter. The renucleation rate in the near-absence of atomic hydrogen is very high ((approximately) 101° cm−2 sec−1), limiting the average grain size to a nearly constant value as the film thickness increases, although the average grain size increases as hydrogen is added to the plasma. For hydrogen concentrations less than (approximately)20%, the growth species is believed to be the carbon dimer, C2, rather than the CH3* growth species associated with diamond film growth at higher hydrogen concentrations. For very thin films grown from the C60 precursor, the threshold field (2 to (approximately)60 volts/micron) for cold cathode electron emission depends on the electrical conductivity and on the surface topography, which in turn depends on the hydrogen concentration in the plasma. A model of electron emission, based on quantum well effects at the grain boundaries is presented. This model predicts promotion of the electrons at the grain boundary to the conduction band of diamond for a grain boundary width (approximately) 3--4 Å, a value within the range observed by TEM.
Author : Kuan Yew Cheong
Publisher : CRC Press
ISBN 13 : 1315352850
Total Pages : 326 pages
Book Rating : 4.3/5 (153 download)
Download or read book Two-Dimensional Nanostructures for Energy-Related Applications written by Kuan Yew Cheong and published by CRC Press. This book was released on 2017-03-27 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edited book focuses on the latest advances and development of utilizing two-dimensional nanostructures for energy and its related applications. Traditionally, the geometry of this material refers to "thin film" or "coating." The book covers three main parts, beginning with synthesis, processing, and property of two-dimensional nanostructures for active and passive layers followed by topics on characterization of the materials. It concludes with topics relating to utilization of the materials for usage in devises for energy and its related applications.
Author : Orlando Auciello
Publisher : Cambridge University Press
ISBN 13 : 1107088739
Total Pages : 297 pages
Book Rating : 4.1/5 (7 download)
Download or read book Ultrananocrystalline Diamond Coatings for Next-Generation High-Tech and Medical Devices written by Orlando Auciello and published by Cambridge University Press. This book was released on 2022-07-21 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive guide to ultrananocrystalline-diamond (UNCDTM) and thin film technology for implantable and external medical devices, edited by a pioneer in the field. Covering synthesis and properties, clinical applications, and regulation, it is essential reading for researchers and practitioners in materials science and biomedical engineering.
Author : Sathyaharish Jeedigunta
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (319 download)
Download or read book Growth and Characterization of Nanocrystalline Diamond Films for Microelectronics and Microelectromechanical Systems written by Sathyaharish Jeedigunta and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: Diamond is widely known for its extraordinary properties, such as high thermal conductivity, energy bandgap and high material hardness and durability making it a very attractive material for microelectronic and mechanical applications. Synthetic diamonds produced by chemical vapor deposition (CVD) methods retain most of the properties of natural diamond. Within this class of material, nanocrystalline diamond (NCD) is being developed for microelectronic and microelectromechanical systems (MEMS) applications. During this research, intrinsic and doped NCD films were grown by the microwave plasma enhanced chemical vapor deposition (MPECVD) method using CH4/Ar/H2 gas mixture and CH4/Ar/N2 gas chemistries respectively. The first part of research focused on the growth and characterization of NCD films while the second part on the application of NCD as a structural material in MEMS device fabrication.
Author : Timothy D. Corrigan
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (451 download)
Download or read book Field Emission Properties and Characterization of Ultrananocrystalline Diamond Thin Films written by Timothy D. Corrigan and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert Eason
Publisher : John Wiley & Sons
ISBN 13 : 0470052112
Total Pages : 754 pages
Book Rating : 4.4/5 (7 download)
Download or read book Pulsed Laser Deposition of Thin Films written by Robert Eason and published by John Wiley & Sons. This book was released on 2007-12-14 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt: Edited by major contributors to the field, this text summarizes current or newly emerging pulsed laser deposition application areas. It spans the field of optical devices, electronic materials, sensors and actuators, biomaterials, and organic polymers. Every scientist, technologist and development engineer who has a need to grow and pattern, to apply and use thin film materials will regard this book as a must-have resource.
Author :
Publisher :
ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.:/5 (492 download)
Download or read book Estampes, dessins anciens et du XIX.e siècle written by and published by . This book was released on 1981 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Patrick Damson Nsimama
Publisher :
ISBN 13 :
Total Pages : 234 pages
Book Rating : 4.:/5 (844 download)
Download or read book Characterization of SrAl2O4:Eu2+,Dy3+ Nano Thin Films Prepared by Pulsed Laser Deposition written by Patrick Damson Nsimama and published by . This book was released on 2010 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
