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2007

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/18778

Nanoscale electrical conductivity of the purple membrane monolayer

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http://dx.doi.org/10.1103/PhysRevE.76.041919

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.

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Microelectrònica, Enginyeria biomèdica

Subject (English)

Microelectronics, Biomedical engineering

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Articles publicats en revistes (Enginyeria Electrònica i Biomèdica)

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CASUSO PÁRAMO, Ignacio, et al. Nanoscale electrical conductivity of the purple membrane monolayer. Physical Review E. 2007. Vol. 76, num. 4, pags. 041919-1-041919-5. ISSN 1063-651X. [consulted: 13 of June of 2026]. Available at: https://hdl.handle.net/2445/18778

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