High Resolution Image Download MS PowerPoint Slide The field-emission and current−voltage characteristics of individual W 5 O 14 nanowires were studied using a transmission electron microscope and a field-emission microscope. The individual W 5 O 14 nanowires made good ohmic contacts with W and Pt at room temperature and had excellent field-emission properties. The field-emission measurements showed that a current as high as 35 μA can be extracted from a single nanowire. A reduced angular current density of 28.7 nAsr -1 V -1 was obtained from a W 5 O 14 nanowire with a sharp tip. These results suggest that W 5 O 14 nanowires might be a realistic candidate as the source for a low-energy electron beam.
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Žumer et al. (2008) studied this question.