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Beilstein-Institut, Beilstein Journal of Nanotechnology, (6), p. 2332-2337, 2015

DOI: 10.3762/bjnano.6.240

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Negative differential electrical resistance of a rotational organic nanomotor

Journal article published in 2015 by Hatef Sadeghi ORCID, Sara Sangtarash ORCID, Qusiy Al-Galiby ORCID, Rachel Sparks, Steven Bailey, Colin J. Lambert
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

A robust, nanoelectromechanical switch is proposed based upon an asymmetric pendant moiety anchored to an organic backbone between two C60 fullerenes, which in turn are connected to gold electrodes. Ab initio density functional calculations are used to demonstrate that an electric field induces rotation of the pendant group, leading to a nonlinear current–voltage relation. The nonlinearity is strong enough to lead to negative differential resistance at modest source–drain voltages.