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Technology Feature
Nature 425, 873 (23 October 2003) | doi:10.1038/425873a
Scanning the surface
Photon tunnelling microscopy (PTM) is a unique surface-scanning technology that can produce real-time three-dimensional images at unparalleled resolution of biological samples, including live cells. The basic technology can be used with common optical microscopes, and can achieve better vertical resolution than a scanning electron microscope without the need for a scanning tip.
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