Accession Number : ADD015276
Title : Method and Apparatus for Performing Scanning Tunneling Optical Absorption Spectroscopy.
Descriptive Note : Patent Application, Filed 20 Dec 91,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC
Personal Author(s) : Glembocki, Orest J ; Snow, Eric S
Report Date : 20 Dec 1991
Pagination or Media Count : 19
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 an 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 : *SPECTRA, *SPECTROSCOPY, DETECTORS, FLOW, ILLUMINATION, LIGHT, MICROSCOPES, MONOCHROMATIC LIGHT, SCANNING, SURFACES, TUNNELING, VOLTAGE, PATENT APPLICATIONS
Subject Categories : Atomic and Molecular Physics and Spectroscopy
Distribution Statement : APPROVED FOR PUBLIC RELEASE