نتایج جستجو برای: chemical vapor deposition
تعداد نتایج: 477188 فیلتر نتایج به سال:
In this work optical properties of SiOX ð0 , X , 2Þ layers obtained by plasma enhanced chemical vapor deposition are studied. Infrared spectra and refractive index dependences with the reactant gases flow ratio R are explained for as deposited, aged and thermally treated samples in the R range from 9.17 to 110. Variations are found to be influenced mainly by sample stoichiometry, density and Si...
The study of chemical reaction rates or “chemical kinetics” is fundamental to the study of chemistry itself and is intimately connected as well to life’s biochemical and biological processes. Most chemical reactions proceed by a complex mechanism that involves a series of elementary steps and it is often the role of chemical kinetics studies to identify these steps, with one typically expected ...
While the traditional and popular realm of polymer synthesis is the liquid phase, the use of vapor-based techniques to deposit polymers has been met with increasing interest over the past decades. The perhaps most relevant example, the deposition of poly(p-xylylenes) via the Gorham process, has been of industrial use in the fabrication of isolating or protective coatings in electronics and biom...
Most conventional chemical vapor deposition (CVD) systems do not have the spatial actuation and sensing capabilities necessary to control deposition uniformity, or to intentionally induce nonuniform deposition patterns for single-wafer combinatorial CVD experiments. In an effort to address this limitation, a novel CVD reactor system has been developed that can explicitly control the spatial pro...
We introduce a new chemical vapor deposition (CVD) process that can be used to selectively deposit materials of many different types. The technique makes use of the plasmon resonance in nanoscale metal structures to produce the local heating necessary to initiate deposition when illuminated by a focused low-power laser. We demonstrate the technique, which we refer to as plasmon-assisted CVD (PA...
پژوهشگران بسیاری در خصوص نانو بلورک های نیکلی و اکسید نیکلی کار کرده اند که دلیل انتخاب آن به کاربردهای آن ها در قطعه های الکتریکی، خازن ها، حسگرها، مواد مغناطیسی، کامپوزیت ها، کاتالیزور ها و تهیه ی فلز مناسب بر می گردد. در کار حاضر تلاشی شده است تا به کمک روش ساده ی سل – ژل که یک روش از پایین به بالا است و حتی در دمای اتاق قابلیت به کارگیری دارد نانو ذره های نیکلی و اکسید نیکلی را سنتز کنیم. د...
Vapor phase syntheses, including parylene chemical vapor deposition (CVD) and initiated CVD, enable the deposition of conformal polymer thin films to benefit a diverse array of applications. This short review for nanotechnologists, including those new to vapor deposition methods, covers the basic theory in designing a conformal polymer film vapor deposition, sample preparation and imaging techn...
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