نتایج جستجو برای: xrd measurements

تعداد نتایج: 391005  

2014
Wenbang Wei Wei Song Shuangbao Zhang

Hydroxyapatite/poly(vinyl alcohol) (Hap/PVA) composites have been proposed as a promising biomaterial for use in articular cartilage repair. In this study, HAp/PVA composite gels reinforced with cellulose nanocrystals (CNC) were prepared using the freeze/thaw method. The influence of CNC as a reinforcement on the structure of composite gels was investigated via Fourier transform infrared spectr...

Journal: :Journal of colloid and interface science 2011
Ramdas B Khomane

Mesoporous rutile TiO(2) nanoneedles have been successfully synthesized using a reverse microemulsion-mediated sol-gel method at room temperature. The materials were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and the Bruauner-Emmet-Teller (BET) adsorption method, and their electrochemical properties were investigated by galvanostatic charge and discharge t...

2000
A. Cavaleiro P. Goudeau J. P. Riviere A. Declemy

Ž . Ti,Al NrMo multilayered hard coatings have been designed to fulfil future applications concerning wear-prevention on tool steels. They have been deposited by reactive dc magnetron sputtering on high-speed steel substrates with modulation periods Ž . Ž . between 6.5 and 8 nm. Experimental X-ray diffraction XRD , Rutherford backscattering spectrometry RBS and computational modelling of those ...

2017
Nafiseh Memarian Seyeed Mohammad Rozati Isabella Concina Alberto Vomiero

Nanocrystalline CdS thin films were grown on glass substrates by a thermal evaporation method in a vacuum of about 2 × 10-5 Torr at substrate temperatures ranging between 25 °C and 250 °C. The physical properties of the layers were analyzed by transmittance spectra, XRD, SEM, and four-point probe measurements, and exhibited strong dependence on substrate temperature. The XRD patterns of the fil...

2016
T. Venkata Rajesh Kumar J. S. R. Murthy Madamsetti Narayana Rao Y. Bhargava

The present investigation demonstrates Couroupita guianensis flower buds extract mediated synthesis of stable silver nanoparticles (AgNPs). Instant formation of AgNPs was primarily confirmed by the appearance of yellowish brown colour and characteristic silver SPR band in the UV-visible spectrum. Elemental and crystalline natures of the AgNPs were identified from EDX and XRD pattern, respective...

2016
E. Kuzmann V. K. Garg A. C. de Oliveira L. Herojit Singh S. S. Pati E. M. Guimaraes Tatiane O. dos Santos

Layered double hydroxides (LDHs) are one of the very important nano-carriers for drug delivery, due to their many advantageous features, such as the ease and low-cost of preparation, low cytotoxicity, good biocompatibility, protection for the intercalated drugs, and the capacity to facilitate the uptake of the loaded drug in the cells. In our previous studies, Mössbauer spectroscopy was applied...

2009
S. A. Eliziário E. Longo

In this letter, we report on the obtention of hafnium oxide (HfO2) nanostructures by the microwavehydrothermal 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) m...

2013
R. SHASHIDHAR

Abstract: TiO2 thin films were prepared by spray pyrolysis technique at a substrate temperature of 350C under optimum conditions. Films have uniform thickness varying from 0.3–6 μm and good adhesion to substrate. The films were characterized by XRD, SEM and EDAX measurements. XRD profile shows poly crystalline nature of films. As deposited films have anatase phase. Transformation from anatase t...

2012
V. Cloet A. Raw K. R. Poeppelmeier G. Trimarchi H. Peng J. Im A. J. Freeman N. H. Perry T. O. Mason A. Zakutayev P. F. Ndione D. S. Ginley J. D. Perkins

The structures of αand β-Ag3VO4 were studied via singlecrystal X-ray diffraction (XRD). The transition from α-phase to β-phase was found to occur at 110 °C. Single-crystal XRD revealed that the integrity of the single crystals was maintained as Ag3VO4 reversibly transitioned between α-Ag3VO4 and β-Ag3VO4. The optical and electrical properties of polycrystalline α-Ag3VO4 were studied by diffuse ...

2012
Phil Kook Son Suk-Won Choi Sung Soo Kim

Low-resistivity indium tin oxide [ITO] film was successfully deposited on oxygen plasma-treated polyethylene terephthalate [PET] surfaces at room temperature. X-ray diffraction [XRD] measurements demonstrated that the film deposited on the PET surface that had not been treated with oxygen plasma had an amorphous structure. In contrast, after the low-power oxygen plasma treatment of the PET surf...

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