Volume 250, Issue 12 pp. 2505-2517
Feature Article

Bottom-up assembly of nano-carbon devices by dielectrophoresis

Aravind Vijayaraghavan

Corresponding Author

Aravind Vijayaraghavan

School of Materials, The University of Manchester, Manchester, M13 9PL UK

Corresponding author: e-mail [email protected], Phone: +44 161275 0136, Fax: +44 161275 4527Search for more papers by this author
First published: 22 November 2013
Citations: 10

Abstract

In this review, I trace the development of dielectrophoresis (DEP) for the directed assembly of carbon nanotubes (CNTs) and graphene. DEP involves driving a nanoparticle in an alternating current (AC) electric field, whereby the particles migrate towards or away from the direction of high-field gradient depending on the relative polarizability of the particle and medium. DEP offers a scalable and controllable route for integration of various kinds of nano-carbon devices, such as field-effect transistors, nano-electromechanical resonators and sensors. DEP utilizes nano-carbons in solution phase and is compatible with the various CNT and graphene sorting methods which have been developed, allowing for instance the large-scale integration of single-chirality CNTs. pssb201300565-gra-0001

False-colour scanning electron micrograph of an array of semiconducting single-wall carbon nanotube devices assembled by alternating-current dielectrophoresis.

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