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Return To Microscope FAQ Archive   Search the Archives What are scanning tunnelling microscopes? Answered By Evan Mattensen, Editor Scanning tunnelling microscopes are instruments used in scanning probe microscopy. It can view very small images of any conductive surface and can inspect an area as small as 2 x 10-10 m or 0.2 nanometer. Using its tip, it can alter the material being investigated by manipulating its atoms. This tip is connected to a scanner, a positioning device then a computer where the data is transmitted. The scanning tunnelling microscope allows a scientist to visualize areas of high electron density, consequently letting them understand the position of individual atoms, where before most could only give an educated guess. --- permission must be obtained from editor Evan Mattensen to re-publish --- Bausch Lomb Microscope

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