Electric field-modulated non-ohmic behavior of carbon nanotube fibers in polar liquids.
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Authors
Terrones, Jeronimo
Elliott, James A
Vilatela, Juan J
Windle, Alan H
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.
Description
Keywords
non-ohmic effect, carbon nanotube fibers, electrical conductivity, solvent, SAXS, impedance
Journal Title
ACS Nano
Conference Name
Journal ISSN
1936-0851
1936-086X
1936-086X
Volume Title
8
Publisher
American Chemical Society (ACS)
Publisher DOI
Sponsorship
JT acknowledges generous financial support from: The Cambridge Commonwealth European and International Trust, CONACyT (Mexico), Dyson Ltd, and Pembroke College Cambridge. JJV acknowledges support from MINECO (Spain) and FP7-People-Marie Curie Action-CIG.