
Proceedings Paper
Nanocrossbar arrays as molecular sensorsFormat | Member Price | Non-Member Price |
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Paper Abstract
Electron tunneling between nanospaced electrodes provides a mechanism for directly transducing the presence of
molecular analytes into electrical signals. Crossbar junctions with vertical separations on the order of a few nanometers
were fabricated using a combination of electron-beam lithography and selective chemical etching. The current-voltage
properties of the nanojunctions are highly sensitive to the chemical environment. The tunneling currents increase over
one order of magnitude in response to water and organic vapors diluted with a background of pure nitrogen. The
resistance of the junctions is also dependent on the concentration of the analyte. These results demonstrate that
tunneling can be used to detect changes in the chemical environment.
Paper Details
Date Published: 5 May 2010
PDF: 7 pages
Proc. SPIE 7679, Micro- and Nanotechnology Sensors, Systems, and Applications II, 76791C (5 May 2010); doi: 10.1117/12.851308
Published in SPIE Proceedings Vol. 7679:
Micro- and Nanotechnology Sensors, Systems, and Applications II
Thomas George; M. Saif Islam; Achyut Kumar Dutta, Editor(s)
PDF: 7 pages
Proc. SPIE 7679, Micro- and Nanotechnology Sensors, Systems, and Applications II, 76791C (5 May 2010); doi: 10.1117/12.851308
Show Author Affiliations
Nicholas Prokopuk, Naval Air Warfare Ctr. (United States)
Kyung-Ah Son, Jet Propulsion Lab. (United States)
Published in SPIE Proceedings Vol. 7679:
Micro- and Nanotechnology Sensors, Systems, and Applications II
Thomas George; M. Saif Islam; Achyut Kumar Dutta, Editor(s)
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