Radiant energy – Inspection of solids or liquids by charged particles
Patent
1991-12-20
1993-03-30
Berman, Jack I.
Radiant energy
Inspection of solids or liquids by charged particles
250307, G01N 2500
Patent
active
051986671
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.
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Glembocki Orest J.
Snow Eric S.
Berman Jack I.
Beyer Jim
McDonnell Thomas E.
Stockstill Charles J.
The United States of America as represented by the Secretary of
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