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ACS Nano. 2014 Aug 26;8(8):8497-504. doi: 10.1021/nn5030835. Epub 2014 Jul 18.

Electric field-modulated non-ohmic behavior of carbon nanotube fibers in polar liquids.

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1
Department of Materials Science, University of Cambridge , 27 Charles Babbage Road, Cambridge, CB3 0FS, United Kingdom.

Abstract

We report a previously unseen non-ohmic effect in which the resistivity of carbon nanotube fibers immersed in polar liquids is modulated by the applied electric field. This behavior depends on the surface energy, dielectric constant, and viscosity of the immersion media. Supported by synchrotron SAXS and impedance spectroscopy, we propose a model in which the gap distance, and thus the conductance, of capacitive interbundle junctions is controlled by the applied field.

PMID:
25025345
DOI:
10.1021/nn5030835
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