نتایج جستجو برای: transmission electron microscope tem

تعداد نتایج: 567607  

2014
Tan Kim Han Leo Bey Fen Ng Meng Nee Mohd Rafie Johan

We report the synthesis of amorphous carbon nanotubes/silver (αCNTs/Ag) nanohybrids via simple chemical route without additional reactant and surfactant at low temperature. Field emission scanning microscope (FESEM) and transmission electron microscope (TEM) confirmed formation of CNTs. X-ray diffraction (XRD) pattern confirmed the amorphous phase of carbon and the formation of Ag nanoparticles...

2009
GEORGE E. CHRISTIDIS

Electron beam techniques namely Scanning Electron Microscopy (SEM), the closely related Electron Probe Microanalysis (EPMA) and Transmission Electron Microscopy (TEM) find ample applications on the characterization of various types of geological materials including clays. They provide morphological, structural and chemical information down to the atomic scale. The principal advantage of the ele...

2015
Ziying Wang Ying Shirley Meng S. Meng

This chapter focuses on the recent development and optimization of analytical electron microscopy to understand the dynamic changes in the bulk and interfaces of electrodes and electrolytes within all solidstate batteries. Three major aspects are covered: (1) design and fabrication of all solid-state batteries that remain functional after careful focused ion beam (FIB) processing; (2) enablemen...

2015
Changlin Zheng Ye Zhu Sorin Lazar Joanne Etheridge

The development of electron-optical techniques for geometric and chromatic aberration correction have significantly improved the spatial resolution of transmission electron microscopy (TEM) and enhanced its capability for chemical mapping [1]. In the present work, we develop an off-axis confocal mode in a scanning transmission electron microscope (STEM) which uses the intrinsic chromatic aberra...

2015
F Hofer F P Schmidt W Grogger

Electron energy-loss spectroscopy (EELS) is an analytical technique that is based on inelastic scattering of fast electrons in a thin specimen. In a transmission electron microscope (TEM) it can provide structural and chemical information about a specimen, even down to atomic resolution. This review provides an overview of the physical basis and new developments and applications of EELS in scan...

2012
Mohsen Ahmadipour

The present paper investigated a preparation of Nano sized Mg0.2Fe0.8O by eco-friendly chemical combustion synthesis using magnesium and iron nitrates as oxidizers and the glycine as a fuel to drive the reaction. Powder characterization was carried out by X-ray diffraction (XRD) to estimate crystallite size, Particle Size Analyzer (PSA), Thermal gravimetric analyzer (TGA) for determining sample...

Journal: :Folia morphologica 2003
Hanna M Alwas-Danowska Dominika A Danowska

The aim of this work was to study the structure of dental pulp (mainly the connective tissue fibre and odontoblasts) during the active production of dentine in relation to the age of the patient. The pulps of the teeth extracted for orthodontic reasons from a population of 10-50 year-olds were investigated with the help of a transmission electron microscope (TEM) and a scanning electron microsc...

2012
Ping Wang Dong-yan Liu Dong-sheng Li

We report the nanostructures and gas-sensing properties of Zinc oxide nanosheets prepared by hydrothermal method. In particular, needlelike Zinc oxide was also prepared for comparison. The morphology and structural properties were investigated using X-ray diffraction (XRD), scanning electron microscope (SEM) and transmission electron microscope (TEM). Subsequent gas-sensing measurement between ...

2009
Poonam Sharma H. S. Virk

Nanoparticles of barium carbonate/oxalate have been synthesized in situ from barium nitrate and ammonium carbonate/oxalate by reverse micelle method. These particles were characterized using transmission electron microscope (TEM), fourier transform infrared (FTIR) and x-ray diffraction (XRD). The results indicate that rod-like barium carbonate (BaCO3) and spherical barium oxalate (BaC2O4) nanop...

Journal: :Journal of microbiological methods 2000
U R Fischer B Velimirov

Transmission electron microscopy (TEM) and epifluorescence microscopy were used to obtain comparative measurements of total bacterial counts, and to enumerate abundances of various bacterial morphotypes in an eutrophic freshwater habitat. Although particulate matter would have been expected to interfere with counting by obscuring large areas of the electron microscope grids, estimates of total ...

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