نتایج جستجو برای: scanningelectron microscopy sem

تعداد نتایج: 241086  

2011

.................................................................................................................................................................. 4 ZUSAMMENFASSUNG .............................................................................................................................................. 6 INTRODUCTION..............................................................

2013
Bo Yang Terry L. Alford

Spectroscopy to characterize several functional materials. Along with the fast development of science and technology, the studied materials is becoming more complicated and smaller. All these achievements has advanced with the fast development of powerful tools currently, such as Scanning electron microscopy(SEM), Focused Ion Beam(FIB), Transmission electron microscopy(TEM), Electron energy los...

Journal: :Analytical and bioanalytical chemistry 2003
William J Egan Randolph C Galipo Brian K Kochanowski Stephen L Morgan Edward G Bartick Mark L Miller Dennis C Ward Robert F Mothershead

Copy toner samples were analyzed using scanning electron microscopy with X-ray dispersive analysis (SEM-EDX) and pyrolysis gas chromatography/mass spectrometry (Py-GC/MS). Principal component and cluster analysis of SEM data for 166 copy toner samples established 13 statistically different subgroups, with the presence or absence of a ferrite base being a major division. When toners were compare...

2004
Nicolas Cornille Dorian Garcia Michael A. Sutton Stephen R. McNeill Jean-José Orteu

A methodology is developed to analyze an image sequence acquired by a scanning electron microscopy (SEM) and convert the image information into accurate 3D surface shape and surface deformation measurements. The methodology provides not only the SEM camera model parameters but also simultaneous corrections for a wide range of distortion sources. The method is applied to analyze images obtained ...

In this paper functionalized multiwall carbon nanotubes (FMWCNT) were modified using doxycycline, containing reactable nitrogen, which can attach chemically to functionalized MWCNT. The synthesized nano compounds were characterized by Fourier transform infrared spectroscopy (FT-IR) and Raman spectroscopy. These spectrums proved the existence of nitrogen atoms of amide functional groups. The mor...

K. Zare M. S. Sadjadi, N. Molahasani

Nanocrystalline Zinc Oxide (ZnO) powders with different morphology have been successfully synthesized by using different surfactants such as Cetyl Trimethyl Ammonium Bromide (CTAB), Sodium Dodecyl Sulphate (SDS), and Tri Ethanol Amine (TEA) via hydrothermal method. The products were characterized by means of powder X-ray diffraction (XRD), Scanning electron microscopy (SEM), Transmission electr...

Journal: :journal of nanostructures 2012
f. piri n. shakour m. zandi r. karimian

the preparation of nanostructure type manganese oxide and cobalt oxide materials with the smallest particle size is reported here. the nanorod manganese oxide and cobalt oxide nanotube were prepared via a sol-gel reaction in reverse micelles from kmno4 and cocl2 with respectively source at room-temperature. the structure and surface morphology of the obtained manganese oxide were studied by mea...

Journal: :organic chemistry research 2016
aigin bashti alireza kiasat

in this paper, 4,4ʹ-bipyridinium dichloride  supported sba-15 (sba@bipy2+ 2cl-) was used for the synthesis of dihydropyrimidinones. the synthesized catalyst was characterized by ft-ir spectroscopy, scanning electron microscopy (sem), transmission electron microscopy (tem) and thermogravimetric analysis (tga). this nanocomposite was shown to be an efficient heterogeneous catalyst for the synthes...

Journal: :journal of nanostructures 2012
m. masteri-farahani m. bahmanyar m. mohammadikish

silica  coated magnetite  nanoparticles were  covalent  grafted with  3-aminopropyl trimethoxysilane  to give aptscmnps. reaction of  the resulted nanomaterial with 4-formyl benzo-12-crown-4 ether afforded fb12c4/aptsmnps  nanocomposite  material  in  which  the  crown ether  moiety  was  attached  through  propyl  chain  spacer. characterization of  the prepared nanocomposite was performed wit...

In this paper functionalized multiwall carbon nanotubes (FMWCNT) were modified using doxycycline, containing reactable nitrogen, which can attach chemically to functionalized MWCNT. The synthesized nano compounds were characterized by Fourier transform infrared spectroscopy (FT-IR) and Raman spectroscopy. These spectrums proved the existence of nitrogen atoms of amide functional groups. The mor...

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