Scanning tunneling microscope and method of displaying observation image
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United States of America Patent
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May 10, 2016
Grant Date -
Sep 17, 2015
app pub date -
Oct 3, 2013
filing date -
Oct 3, 2012
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Abstract
A scanning tunneling microscope includes a probe, a control unit that controls a distance between that probe and a sample, a voltage applying unit that supplies a direct current voltage between the probe and the sample, a measurement unit that measures a tunneling current that flows between the probe and the sample by the direct current voltage, an extraction unit that extracts as an observation value a specified frequency component from instantaneous values of the tunneling current measured by the measurement unit, and an observation information generation unit that generates observation information that includes information relating to at least one of a chemical state and an internal structure of a surface of the sample on the basis of the observation value extracted by the extraction unit.
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