File:U.S. Department of Energy - Science - 276 004 004 (16625683911).jpg

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UNIVERSITY OF TENNESSEE GRADUATE STUDENTS WORKING AT ORNL OPERATE THE PHOTON SCANNING TUNNELING MICROSCOPE.

THE PHOTON SCANNING TUNNELING MICROSCOPE UTILIZES LIGHT WHICH IS TOTALLY INTERNALLY REFLECTED INSIDE A PRISM, RESULTING IN AN EXPONENTIALLY-DECAYING EVANESCENT FIELD JUST OUTSIDE THE REFLECTING SURFACE. THE SAMPLE CAN BE AN INSULATING DIELECTRIC MATERIAL (BIOLOGICAL), SCANNED UNDER AMBIENT CONDITIONS BY THE OPTICALLY CONDUCTING TIP THAT ALLOWS TUNNELING OF PHOTONS TO A DETECTOR. THE RESOLUTION IS PRIMARILY GOVERNED BY THE WAVELENGTH OF LIGHT USED, BUT HAS EASILY EXCEEDED THE THEORETICAL LIMIT FOR CONVENTIONAL OPTICAL MICROSCOPES.


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Source 276 004 004
Author U.S. Department of Energy from United States

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Public domain This image is a work of a United States Department of Energy (or predecessor organization) employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain.

Please note that national laboratories operate under varying licences and some are not free. Check the site policies of any national lab before crediting it with this tag.

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This image was originally posted to Flickr by U.S. Department of Energy at https://flickr.com/photos/37916456@N02/16625683911. It was reviewed on 22 November 2017 by FlickreviewR 2 and was confirmed to be licensed under the terms of the United States Government Work.

22 November 2017

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current00:34, 22 November 2017Thumbnail for version as of 00:34, 22 November 20173,200 × 2,560 (669 KB)Rudolphous (talk | contribs)Transferred from Flickr via Flickr2Commons

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