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CdO nanotubes (NTs) with a mean diameter of 50 nm have been fabricated by the simple thermal evaporation of Cd powder without using any catalyst or template. The growth mechanism of CdO NTs is discussed. It is suggested that the CdO NTs are formed by the sublimation of the Cd cores of the Cd/CdO core/shell nanocables. The direct and indirect band gaps of the CdO NTs are determined to be 2.85 eV and...
The zinc oxide (ZnO) nanowires with different morphology and diameter were synthesized on silicon (100) substrates by heating pure zinc powder at low temperatures of 450 °C and 480 °C. Scanning electron microscopy (SEM) was used to analyze the morphology and diameter of samples. The electron field emission properties between different morphology of ZnO nanowires samples were compared. A low turn-on...
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