Quantitative analysis of electron field-emission characteristics of individual carbon nanotubes: The importance of the tip structure

Article Abstract:

The study related with electron field-emission measurements on individual carbon nanotubes (CNTs) which were performed inside the transmission electron microscope (TEM) is presented. High-resolution TEM observations revealed that the tip of an opened CNT might be composed of irregular shaped graphitic sheets that are found to improve dramatically the field-emission characteristics, but the sharp edge might result in larger error in the calculated emission area.

Analysis, Observations, Transmission electron microscopes, Properties, Nanotubes, Evaporation

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Antimony dispersion and phase evolution in the Sb2O3-Fe2O3 system

Article Abstract:

A study on the antimony spreading and segregation that occurred with the oxidation and solid state reactions in the state reactions in the Fe2O3-Sb2O3 system using XRD, SEM, TG-DSC and XPS was performed. The study indicated that the thermal spreading of Sb2O3 and Fe2O3 increases with increasing temperature until Sb2O3 is oxidized then it decreases and surface concentration of antimony further decreases due to the formation of Fe2O4.

Iron compounds, Thermal properties, Solid state chemistry

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High-quality ultralong Sb(sub 2)S(sub 3), nanoribbons on large scale

Article Abstract:

A hydrothermal method is reported for synthesizing high-quality, ultralong, large-scale, single-crystalline Sb(sub 2)S(sub 3) by directly reacting SbCl(sub 3) and Na(sub 2)S(sub 2)O(sub 3) solutions. It is suggested that Sb(sub 2)S(sub 3) nanoribbons can be very promising for applications in solar energy and photoelectronic applications.

Nanotechnology, Sulfides

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