نتایج جستجو برای: diamond

تعداد نتایج: 20974  

2015
A. Karthikeyan

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...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2015
M A Lodes F S Kachold S M Rosiwal

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...

2012
Marko Lončar

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...

Journal: :Discrete Mathematics 2017
Sofiya Ostrovska Mikhail I. Ostrovskii

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...

2004
Anurag Sharma Manabu Iwai Sadao Sano Tetsutaro Uematsu Kiyoshi Suzuki

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...

2006
Andrea C. Ferrari

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 ...

2015
Darren Schaeffer

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...

1995
Huimin Liu David S. Dandy

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 ...

2005
Jungheum Yun David S. Dandy

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...

2009
John Albanese Geoffrey Dugue Valentin Parvu Ann M Bajart Edwin Lee

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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