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Dielectrophoretic assembly of high-density arrays of individual graphene devices for rapid screening

Accepted version
Peer-reviewed

Type

Article

Change log

Authors

Vijayaraghavan, A 
Sciascia, C 
Dehm, S 
Bonetti, A 

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.

Description

Keywords

graphene, dielectrophoresis, directed assembly, bottom-up, WALLED CARBON NANOTUBES, CHEMICAL-VAPOR-DEPOSITION, ELECTRONIC-STRUCTURE, RAMAN-SPECTROSCOPY, OXIDE SHEETS, LARGE-AREA, GRAPHITE, FILMS, DISPERSIONS

Journal Title

ACS NANO

Conference Name

Journal ISSN

1936-0851
1936-086X

Volume Title

Publisher

American Chemical Society