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Scanning electron image of CNFs formed on a overcoat sputter-deposited on the electro-polished tip of a wire.
Cross-sectional diagrams of the SMXT system (a), and the emitter assembly (b). (c) Photo-image of a full-scale model of the SMXT, demonstrating its small dimensions. The arrow in (a) indicates the emitter assembly. The distance between emitter and target was around .
X-ray spectrum at .
(a) Contact x-ray image of a fresh gingko leaf, revealing its capillary veins, and (b) an enlarged image of its central area in (a). Electron energy: ; exposure time: . The image was recorded directly on an x-ray film.
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