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Dielectrophoretic Assembly of High-Density Arrays of Individual Graphene Devices for Rapid Screening

Vijayaraghavan, Aravind and Sciascia, Calogero and Dehm, Simone and Lombardo, Antonio and Bonetti, Alessandro and Ferrari, Andrea C. and Krupke, Ralph (2009):
Dielectrophoretic Assembly of High-Density Arrays of Individual Graphene Devices for Rapid Screening.
In: ACS Nano, 3 (7), pp. 1729-1734, ISSN 1936-0851,
[Online-Edition: http://dx.doi.org/10.1021/nn900288d],
[Article]

Abstract

We establish the use of dielectrophoresis for the directed parallel assembly of individual flakes and nanoribbons of few-layer graphene into electronic devices. This is a bottom-up approach where source and drain electrodes are prefabricated and the flakes are deposited from a solution using an alternating electric field applied between the electrodes. These devices are characterized by scanning electron microscopy, atomic force microscopy, Raman spectroscopy, and electron transport measurements. They are electrically active and their current carrying capacity and subsequent failure mechanism is revealed. Akin to carbon nanotubes, we show that the dielectrophoretic deposition is self-limiting to one flake per device and is scalable to ultralarge-scale integration densities, thereby enabling the rapid screening of a large number of devices.

Item Type: Article
Erschienen: 2009
Creators: Vijayaraghavan, Aravind and Sciascia, Calogero and Dehm, Simone and Lombardo, Antonio and Bonetti, Alessandro and Ferrari, Andrea C. and Krupke, Ralph
Title: Dielectrophoretic Assembly of High-Density Arrays of Individual Graphene Devices for Rapid Screening
Language: English
Abstract:

We establish the use of dielectrophoresis for the directed parallel assembly of individual flakes and nanoribbons of few-layer graphene into electronic devices. This is a bottom-up approach where source and drain electrodes are prefabricated and the flakes are deposited from a solution using an alternating electric field applied between the electrodes. These devices are characterized by scanning electron microscopy, atomic force microscopy, Raman spectroscopy, and electron transport measurements. They are electrically active and their current carrying capacity and subsequent failure mechanism is revealed. Akin to carbon nanotubes, we show that the dielectrophoretic deposition is self-limiting to one flake per device and is scalable to ultralarge-scale integration densities, thereby enabling the rapid screening of a large number of devices.

Journal or Publication Title: ACS Nano
Volume: 3
Number: 7
Uncontrolled Keywords: graphene; dielectrophoresis; directed assembly; bottom-up
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Fachgebiet Molekulare Nanostrukturen
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 08 Nov 2011 12:28
Official URL: http://dx.doi.org/10.1021/nn900288d
Identification Number: doi:10.1021/nn900288d
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