نتایج جستجو برای: diamond
تعداد نتایج: 20974 فیلتر نتایج به سال:
In this project, a novel approach for motion estimation is proposed. There are few block matching algorithm existing for motion estimation. In motion estimation a new cross diamond search algorithm is implemented compared to diamond search it uses less search point. Because of this we can reduce the computational complexity. The performance of the algorithm is compared with other algorithm by m...
Diamond coating of suitable template materials and subsequent delamination allows for the manufacturing of free-standing diamond foil. The evolution of the microstructure can be influenced by secondary nucleation via control of process conditions in the hot-filament chemical vapour deposition process. Bending tests show extraordinarily high strength (more than 8 GPa), especially for diamond foi...
Diamond nanophotonics have evolved tremendously from the study of color centers in bulk single crystals and nanocrystals to their characterization in nanostructured environments. This development was facilitated by the ability to generate monolithic, sophisticated nanodevices in high quality single crystal diamond. Here, we present some recent contributions to the field of diamond nanophotonics...
Diamond graphs and Laakso graphs are important examples in the theory of metric embeddings. Many results for these families of graphs are similar to each other. In this connection, it is natural to ask whether one of these families admits uniformly bilipschitz embeddings into the other. The well-known fact that Laakso graphs are uniformly doubling but diamond graphs are not, immediately implies...
The reduction of electrode wear is very important for high finish and high accuracy machining in microEDM. Electrically conductive CVD diamond has shown almost zero electrode wear, even at short pulse duration of 3μs, which is extremely important for maintaining the desired shape. This research involves an investigation into the EDM performance of the electrically conductive CVD diamond with re...
Carbon is a very versatile element that can crystallize in the forms of diamond or graphite. There are many noncrystalline carbons, known as amorphous carbons. An amorphous carbon with a high fraction of diamond-like (sp3) bonds is named diamond-like carbon (DLC). Unlike diamond, DLC can be deposited at room temperature. Furthermore, its properties can be tuned by changing the sp3 content, the ...
The radiation hardness of diamonds makes them a strong candidate to replace the inner most part of the CMS tracking detector. Polycrystalline diamond has been shown to regain some its CCD under sub-bandgap irradiations due to the depolarization of the diamond sensor. Monocrystalline diamonds that have suffered proton radiation damage exhibit a similar CCD reduction due to polarization. This stu...
This paper presents a theoretical study on the initial stage of diamond nucleation during CVD. A kinetic model is developed to investigate the time evolution of diamond nucleation on carbide-forming substrates. The calculated results provide some insight into the effects of substrate materials, surface diffusion and adsorption state on diamond nucleation kinetics. Full-length manuscript of the ...
The presence of thin silicon carbide intermediate layers on silicon substrates during nucleation and the early stages of diamond deposition have been frequently reported. It is generally accepted that the intermediate layer is formed by the bulk diffusion of carbon atoms into the silicon carbide layer, and the morphology and orientation of the diamond film subsequently grown on the intermediate...
BACKGROUND Previous research has suggested that the silicon BD Atomic Edge knife has superior performance characteristics when compared to a metal knife and performance similar to diamond knife when making various incisions. This study was designed to determine whether a silicon accurate depth knife has equivalent performance characteristics when compared to a diamond limbal relaxing incision (...
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