Device Operation: Near-Field Imaging: Chapter 6: Imaging
Автор: John Zhang
Загружено: 2015-04-21
Просмотров: 343
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Imaging
If the probe is kept at a constant distance while scanning, we can obtain topographical images of a surface. When a light source comes within the near-field of a sample, the sample is excited by the light, resulting in photoluminescence. Photoluminescence is measured by a photodetector to produce an image The excitation occurs in a very localized area of the sample resulting in high resolution optical imaging. The advantage of using NSOM is that ability to correlate topographical and optical imaging.
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