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