نتایج جستجو برای: diamond nano
تعداد نتایج: 71087 فیلتر نتایج به سال:
Aim: To compare the effect of four different polishing systems on color stability of two Nano composite resins immersed in four beverages (Coffee, Tea, Cola and Fanta). Methods: Eighty disc shaped specimens of 10 mm diameter and 2 mm thickness were prepared for each of the two Nano composite resins (Tetric N Ceram; Estelite alpha). The specimens of each material were divided into four groups (n...
© 2014 Materials Research Society MRS BULLETIN • VOLUME 39 • JUNE 2014 • www.mrs.org/bulletin Introduction Chemical vapor deposition (CVD) diamond fi lm technology has experienced modest growth in the last two decades in terms of scientifi c and technological advances in the fi eld, which has, ultimately, positively affected progress in diamondbased microelectromechanical/nanoelectromechanical ...
Analysis of data on micro- and nano-inclusions in mantle-derived and metamorphic diamonds shows that, to a first approximation, diamond-forming medium can be considered as a specific ultrapotassic, carbonate/chloride/silicate/water fluid. In the present work, the processes and mechanisms of diamond crystallization were experimentally studied at 7.5 GPa, within the temperature range of 1,400-1,8...
In this paper, the shape transferability of using nanoscale multi-tip diamond tools in the diamond turning for scale-up manufacturing of nanostructures has been demonstrated. Atomistic multi-tip diamond tool models were built with different tool geometries in terms of the difference in the tip cross-sectional shape, tip angle, and the feature of tool tip configuration, to determine their effect...
عنصر کربن شامل آلوتروپ های گرافیت، الماس و کرباین است. اخیراً در آزمایش های مختلفی ساختاری بلوری از عنصر کربن مشاهده شده که با دیگر ساختارهای کربنی متفاوت است. در مورد نوع ساختار این فاز جدید کربنی که n-diamond نامیده شده اتفاق نظر وجود ندارد. اولین بار ژارکوف و پالاتنیک پیشنهاد کردند که این فاز، یک ساختار fcc از کربن است. از آنجایی که ساختار n-diamond یک ساختار فراپایدار است، موریتا و همکارانش ...
This paper uses the molecular dynamics method to investigate the influence of chemical bonds on the mechanical behaviour of nanotube–polyethylene composites subjected to nano-particle impacts. In the analysis, carbon nanotubes (CNTs) were incorporated into the polyethylene (PE) matrix in two ways, with and without radical centres, so that the resulting nano-composites had two corresponding prop...
Consolidated bodies of polycrystalline diamond with grain sizes less than 100 nm, nano-polycrystalline diamond (NPD), has been experimentally produced by direct conversion of graphite at high pressure and high temperature. NPD has superior hardness, toughness and wear resistance to single-crystalline diamonds because of its peculiar nano-textures, and has been successfully used for industrial a...
We apply atomic force microscope for local electrostatic charging of oxygen-terminated nanocrystalline diamond (NCD) thin films deposited on silicon, to induce electrostatically driven self-assembly of colloidal alumina nanoparticles into micro-patterns. Considering possible capacitive, sp2 phase and spatial uniformity factors to charging, we employ films with sub-100 nm thickness and about 60%...
We demonstrate a new approach for engineering group IV semiconductor-based quantum photonic structures containing negatively charged silicon-vacancy (SiV(-)) color centers in diamond as quantum emitters. Hybrid diamond-SiC structures are realized by combining the growth of nano- and microdiamonds on silicon carbide (3C or 4H polytype) substrates, with the subsequent use of these diamond crystal...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید