نتایج جستجو برای: xrd x

تعداد نتایج: 636162  

Journal: :Dental materials journal 2012
Fukunaga Otsuka Yu Kataoka Takashi Miyazaki

The purpose of this study is to investigate the surface characteristics and biocompatibility of titanium (Ti) surfaces modified by wire electrical discharge machining (EDM). EDM surface characteristics were evaluated by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), thin-film X-ray diffractometry (XRD) and contact angle measurements. MC3T3-E1 cell morphology, attach...

Journal: :international journal of nano dimension 0
a. bagheri gh. department of chemistry, center tehran branch, islamic azad university, tehran, iran. z. mirjani kahaki department of chemistry, center tehran branch, islamic azad university, tehran, iran.

oxide nanoparticles can exhibit unique physical and chemical properties due to their limited size and a high density of corner or edge surface sites. in this study, mgo nanoparticle was synthesized using mg(ch3coo)2 and hexamethylenetetramine as starting materials. the structure and optical properties of these particles are investigated by using x-ray diffraction (xrd), scanning electron micros...

Journal: :international journal of nano dimension 0
n. parsafar research institute of applied sciences, academic center of education, culture and research (acecr), shahid beheshti university, tehran, iran. a. ebrahimzad research institute of applied sciences, academic center of education, culture and research (acecr), shahid beheshti university, tehran, iran.

tellurium nanostructures have been prepared by physical vapor deposition method in a tube furnace. the experiments were carried out under argon gas flow at a pressure of 1 mbar. tellurium powder was evaporated by heating at 350°c and 430°c and was condensed on substrates at 110–250°c, in the downstream of argon gas flow. the products were characterized by field emission scanning electron micros...

2009
Subhash Chandra Fouran Singh D K Avasthi J M S Rana R C Ramola

High-energy ion beam irradiation of the polymers is a good technique to modify the properties such as electrical conductivity, structural behaviour and mechanial properties. Polyaniline thin films doped with hydrochloric acid (HCl) were prepared by oxidation of ammonium persulphate. The effect of Swift Heavy Ions irradiation on the electrical and structural properties of polyaniline has been me...

2012
Venkata Lakshmi R. A. Venkata Lakshmi T.S.R. Murthy

The paper focuses on corrosion phenomena involving copper, corrosive sulphur and solid insulation of oil-immersed transformers. A study of the available mitigation technique such as passivation to reduce the effects of corrosion phenomena is carried out with the commercially available passivator, Irgamet 39 (Toluiltriazole dialkylamine) (ciba), with concentration of 100 ppm. The paper insulated...

2012
Nabakumar Pramanik Sudip Chakraborty

The present research attempt consists in the development of mesoporous hydroxyapatite using inexpensive ingredients using cetyltrimethylammonium bromide (CTAB) as template through a chemical-based hydrothermal method. Wide angle X-ray diffraction (XRD) reveals the formation of pure single-phased hydroxyapatite particles. Fourier transform infrared absorption spectroscopy (FTIR) and electron dif...

2009
SA Eliziário LS Cavalcante JC Sczancoski PS Pizani JA Varela JWM Espinosa E Longo

In this letter, we report on the obtention of hafnium oxide (HfO(2)) nanostructures by the microwave-hydrothermal method. These nanostructures were analyzed by X-ray diffraction (XRD), field-emission gum scanning electron microscopy (FEG-SEM), transmission electron microscopy (TEM), energy dispersive X-ray spectrometry (EDXS), ultraviolet-visible (UV-vis) spectroscopy, and photoluminescence (PL...

2012
Hua Zhou Hui-Qiong Wang Xia-Xia Liao Yufeng Zhang Jin-Cheng Zheng Jia-Ou Wang Emin Muhemmed Hai-Jie Qian Kurash Ibrahim Xiaohang Chen Huahan Zhan Junyong Kang

Polar and nonpolar ZnO thin films were deposited on MgO (001) substrates under different deposition parameters using oxygen plasma-assisted molecular beam epitaxy (MBE). The orientations of ZnO thin films were investigated by in situ reflection high-energy electron diffraction and ex situ X-ray diffraction (XRD). The film roughness measured by atomic force microscopy evolved as a function of su...

Journal: :Microelectronics Journal 2008
C. Vargas-Hernández F. N. Jiménez-García J. F. Jurado V. Henao Granada

ZnO thin films were deposited by successive ionic layer adsorption and reaction (SILAR) method using a zinc nitrate and ammonium bath on glass substrates. The number of employed cycles were 50, 100 and 200. The films were studied by X-ray diffraction (XRD), optical absorption (UV–Vis) and m-Raman. Structural analysis by XRD shows that the as-deposited ZnO films have high-orientation along c-dir...

2016
Zahra Haghighi Hossein Abbaspour Naser Karimi Ali Fattahi Philippe Lambin

This paper reports a novel green approach for the synthesis of silver nanoparticles (AgNPs) using aqueous seed extract of Dracocephalum moldavica (L.) under ambient conditions. Processes such as Ultraviolet-visible (UV-vis) spectrometer, field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), energy dispersive X-ray analysis ...

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