Accession Number : ADD015796
Title : Method and Apparatus for Performing Scanning Tunneling Optical Absorption Spectroscopy.
Descriptive Note : Patent, filed 20 Dec 91, patented 30 Mar 93,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC
Personal Author(s) : Glembocki, Orest J ; Snow, Eric S
Report Date : 30 Mar 1993
Pagination or Media Count : 7
Abstract : An apparatus for performing scanning tunneling optical absorption spectroscopy includes a scanning tunneling microscope tip positioned at a tunneling distance over a surface portion of a sample to be analyzed, biasing apparatus for producing in electric potential between said scanning tunneling microscope tip and said surface portion sufficient to cause a tunneling current to flow between said scanning tunneling microscope tip and said surface portion, illumination apparatus for illuminating said surface portion with modulated monochromatic light, and a detector for detecting an AC component of the tunneling current resulting from the modulated monochromatic light.
Descriptors : *ABSORPTION, *SCANNING, *SPECTROSCOPY, *TUNNELING, *PATENTS, *OPTICS, DETECTORS, ILLUMINATION, LIGHT, MICROSCOPES, MONOCHROMATIC LIGHT, SURFACES, VOLTAGE, ELECTRIC CURRENT, MODULATION, SPATIAL DISTRIBUTION, RESOLUTION
Subject Categories : Atomic and Molecular Physics and Spectroscopy
Electrical and Electronic Equipment
Electricity and Magnetism
Distribution Statement : APPROVED FOR PUBLIC RELEASE