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Converting external potential fluctuations into nonzero time-average electric currents using a single nanopore

Gomez, Vicente and Ramirez, Patricio and Cervera, Javier and Nasir, Saima and Ali, Mubarak and Ensinger, Wolfgang and Mafe, Salvador (2015):
Converting external potential fluctuations into nonzero time-average electric currents using a single nanopore.
In: Applied Physics Letters, pp. 073701, 106, (7), ISSN 0003-6951, 1077-3118,
[Online-Edition: http://scitation.aip.org/content/aip/journal/apl/106/7/10.10...],
[Article]

Abstract

The possibility of taking advantage of a fluctuating environment for energy and information transduction is a significant challenge in biological and artificial nanostructures. We demonstrate here directional electrical transduction from fluctuating external signals using a single nanopore of conical shape immersed in an ionic aqueous solution. To this end, we characterize experimentally the average output currents obtained by the electrical rectification of zero time-average input potentials. The transformation of external potential fluctuations into nonzero time-average responses using a single nanopore in liquid state is of fundamental significance for biology and nanophysics. This energy and information conversion constitutes also a significant step towards macroscopic scaling using multipore membranes.

Item Type: Article
Erschienen: 2015
Creators: Gomez, Vicente and Ramirez, Patricio and Cervera, Javier and Nasir, Saima and Ali, Mubarak and Ensinger, Wolfgang and Mafe, Salvador
Title: Converting external potential fluctuations into nonzero time-average electric currents using a single nanopore
Language: English
Abstract:

The possibility of taking advantage of a fluctuating environment for energy and information transduction is a significant challenge in biological and artificial nanostructures. We demonstrate here directional electrical transduction from fluctuating external signals using a single nanopore of conical shape immersed in an ionic aqueous solution. To this end, we characterize experimentally the average output currents obtained by the electrical rectification of zero time-average input potentials. The transformation of external potential fluctuations into nonzero time-average responses using a single nanopore in liquid state is of fundamental significance for biology and nanophysics. This energy and information conversion constitutes also a significant step towards macroscopic scaling using multipore membranes.

Journal or Publication Title: Applied Physics Letters
Volume: 106
Number: 7
Uncontrolled Keywords: Cell membranes, ELECTRIC CURRENTS, Nanoporous materials, Random noise, Rectification
Divisions: 11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Material Analytics
11 Department of Materials and Earth Sciences
Date Deposited: 19 Feb 2015 14:38
Official URL: http://scitation.aip.org/content/aip/journal/apl/106/7/10.10...
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