Microscopy, Scanning Tunneling

Medical Dictionary -> Microscopy, Scanning Tunneling

Microscopy, Scanning Tunneling


A type of scanning probe microscopy in which a very sharp conducting needle is swept just a few angstroms above the surface of a sample. The tiny tunneling current that flows between the sample and the needle tip is measured, and from this are produced three-dimensional topographs. Due to the poor electron conductivity of most biological samples, thin metal coatings are deposited on the sample.


© MedicalDictionaryweb.com 2012 | Contact Us | Terms of Use | Teeth Whitening | Low Carb Foods and Diets