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Title: Nanoscale electrical conductivity of the purple membrane monolayer
Author: Casuso Páramo, Ignacio
Fumagalli, Laura, 1959-
Samitier i Martí, Josep
Padrós, Esteve
Reggiani, L. (Lino), 1941-
Akimov, Vladimir
Gomila Lluch, Gabriel
Keywords: Microelectrònica
Enginyeria biomèdica
Biomedical engineering
Issue Date: 2007
Publisher: The American Physical Society
Abstract: Nanoscale electron transport through the purple membrane monolayer, a two-dimensional crystal lattice of the transmembrane protein bacteriorhodopsin, is studied by conductive atomic force microscopy. We demonstrate that the purple membrane exhibits nonresonant tunneling transport, with two characteristic tunneling regimes depending on the applied voltage (direct and Fowler-Nordheim). Our results show that the purple membrane can carry significant current density at the nanometer scale, several orders of magnitude larger than previously estimated by macroscale measurements.
Note: Reproducció del document publicat a:
It is part of: Physical Review E, 2007, vol. 76, núm. 4, p. 041919-1-041919-5
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ISSN: 1063-651X
Appears in Collections:Articles publicats en revistes (Enginyeria Electrònica i Biomèdica)

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