نتایج جستجو برای: fesem

تعداد نتایج: 2149  

Journal: :international journal of nano dimension 0
m. a. shah department of physics, faculty of science, king abdul aziz university, jeddah 21589, kingdom of saudi arabia. f.m. al-marzouki department of physics, faculty of science, king abdul aziz university, jeddah 21589, kingdom of saudi arabia.

magnesium hydroxide mg(oh)2 nanorods with diameters of 90±10nm and lengths of more than 2μms were prepared by a simple route at ~75oc in ambient air. the approach is based on reaction of magnesium powder and de-ionized water without the use of any harmful, toxic or corrosive reagents. characterization using x-ray diffraction (xrd) shows single crystalline structure of mg(oh)2 (brucite) whereas ...

Journal: :The Plant journal : for cell and molecular biology 2005
Francoise Marga Michel Grandbois Daniel J Cosgrove Tobias I Baskin

Enlargement of the cell wall requires separation of cellulose microfibrils, mediated by proteins such as expansin; according to the multi-net growth hypothesis, enlargement passively reorients microfibrils. However, at the molecular scale, little is known about the specific movement of microfibrils. To find out, we examined directly changes in microfibril orientation when walls were extended sl...

2012
S. Govindan E. A. K. Nivethaa R. Saravanan V. Narayanan A. Stephen

Chitosan–silver (CS–Ag) nanocomposite materials were synthesized by a simple chemical method. The synthesized CS–Ag nanocomposite contains 20 wt% silver. Silver nanoparticles were synthesized by chemical reduction method as well. The CS–Ag nanocomposite was characterized using Field emission scanning electronic microscope (FESEM), X-ray diffraction (XRD) and Fourier transform infrared spectrosc...

Journal: :international journal of nano dimension 0
zainab tohidian department of chemistry, faculty of science, shahid bahonar university of kerman, kerman, iran. iran sheikhshoaie department of chemistry, faculty of science, shahid bahonar university of kerman, kerman, iran. moj khaleghi department of biology, faculty of science, shahid bahonar university of kerman, kerman, iran.

new two nano- sized schiff base complexes [m(l)], where l= 2, 2'-((1e, 1e')-(1, 2 phenylen bis (azanylylidene)) bis (methanylylidene)) bis (4-bromo phenolato) and m=cu or zn, (a, b complexes) were synthesized by ultrasonic irradiation. these complexes were characterized by elemental analysis, molar conductivity, ft-ir, fluorescence emission, 1h nmr, field emission scanning electron sp...

2013
S. MUNUSAMY Vidhya Sagar

Polypyrrole nanoparticles were synthesized by chemical polymerization method using ammonium persulphate as an oxidant. The synthesized polypyrrole nanoparticles were characterized by FT-IR, UV-Visible, FESEM and CV. The structure of polypyrrole nanoparticles were confirmed by FT-IR spectroscopy. The UV-Vis spectra of polypyrrole nanoparticles show π-π* and n-π* transitions. The morphological pr...

2012
Ahmad Abdolahi Esah Hamzah Zaharah Ibrahim Shahrir Hashim

The present paper aims to study the preparation of polyaniline nanofibers through simple interfacial polymerization. Ammonium persulfate, hydrochloric acid and chloroform were used as oxidant, dopant and organic solvent respectively. Field Emission Scanning Electron Microscopy (FESEM), X-ray diffraction and Fourier Transform Infrared Spectroscopy (FTIR) techniques were used to analyze the produ...

2014
R. J. Kavitha

AbstractBioactive glass with frame of SiO2-CaO-P2O5-ZnO-MgO-SrO was prepared using quick alkali mediated sol-gel process. The functional group analysis, morphology, composition and phase analysis of this glass were done by using FTIR, FESEM, EDX and XRD respectively. The bioactive nature of the sample was analyzed by immersion in Phosphate Buffer Saline (PBS) for a period of 7 days and characte...

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