نتایج جستجو برای: scanningelectron microscopy sem
تعداد نتایج: 241086 فیلتر نتایج به سال:
.................................................................................................................................................................. 4 ZUSAMMENFASSUNG .............................................................................................................................................. 6 INTRODUCTION..............................................................
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...
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...
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...
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...
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...
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...
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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