Gap-modulated versus constant current mode as a tool to discriminate between DNA and substrate structure in STM

Antonio Cricenti; S. Selci; M. Scarselli; Renato Generosi; F. Amaldi; G. Chiarotti

doi:10.1117/12.146384

4 June 1993 Gap-modulated versus constant current mode as a tool to discriminate between DNA and substrate structure in scanning tunneling microscopy

Antonio Cricenti, S. Selci, M. Scarselli, Renato Generosi, F. Amaldi, G. Chiarotti

Author Affiliations +

Proceedings Volume 1855, Scanning Probe Microscopies II; (1993) https://doi.org/10.1117/12.146384
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

Abstract

We present several experimental results of imaging DNA on graphite. Images have been taken simultaneously in constant-current and gap-modulated mode. This way of imaging has been very helpful in order to discriminate between structures due to biological molecules and substrate artifacts. A possible way of using the tip to confirm this conclusion is shown.

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Antonio Cricenti, S. Selci, M. Scarselli, Renato Generosi, F. Amaldi, and G. Chiarotti "Gap-modulated versus constant current mode as a tool to discriminate between DNA and substrate structure in scanning tunneling microscopy", Proc. SPIE 1855, Scanning Probe Microscopies II, (4 June 1993); https://doi.org/10.1117/12.146384

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