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Development of a nanowire-based test bed device for molecular electronics applications

Development of a nanowire-based test bed device for molecular electronics applications
Development of a nanowire-based test bed device for molecular electronics applications
In this paper, we present a novel test bed system which we believe addresses several key challenges in molecular electronics, i.e., the need to fabricate metal-molecule-metal junctions that have the potential to facilitate single-molecule measurements, are easily characterized, and are reproducible. The system is based upon template-electrodeposited metal nanowires incorporating a self-assembled monolayer spacer that are fabricated into electrical devices using direct-write photolithography. Removal of the spacer leaves a nanometer-sized, characterizable gap to which nanoparticles or a test molecule of interest can be attached postfabrication. Here we report the fabrication procedure together with results showing the application of these devices to the study of the i/V characteristics of Au nanoparticles at cryogenic temperatures. These data demonstrate that the performance of these easily produced, inexpensive, novel devices compares favorably to that of devices made using preexisting methods.
0003-2700
951-955
Gardner, C.E.
2d3bd75b-c9c6-41e2-923a-2cb65cf30746
Ghanem, M.A.
f256d3b0-8767-4c1b-919d-2c9582102162
Wilson, J.W.
ea8d5f43-05cc-4b02-8d11-c3ba60392d11
Smith, D.C.
d9b2c02d-b7ea-498b-9ea1-208a1681536f
Gardner, C.E.
2d3bd75b-c9c6-41e2-923a-2cb65cf30746
Ghanem, M.A.
f256d3b0-8767-4c1b-919d-2c9582102162
Wilson, J.W.
ea8d5f43-05cc-4b02-8d11-c3ba60392d11
Smith, D.C.
d9b2c02d-b7ea-498b-9ea1-208a1681536f

Gardner, C.E., Ghanem, M.A., Wilson, J.W. and Smith, D.C. (2006) Development of a nanowire-based test bed device for molecular electronics applications. Analytical Chemistry, 78 (3), 951-955. (doi:10.1021/ac051106l).

Record type: Article

Abstract

In this paper, we present a novel test bed system which we believe addresses several key challenges in molecular electronics, i.e., the need to fabricate metal-molecule-metal junctions that have the potential to facilitate single-molecule measurements, are easily characterized, and are reproducible. The system is based upon template-electrodeposited metal nanowires incorporating a self-assembled monolayer spacer that are fabricated into electrical devices using direct-write photolithography. Removal of the spacer leaves a nanometer-sized, characterizable gap to which nanoparticles or a test molecule of interest can be attached postfabrication. Here we report the fabrication procedure together with results showing the application of these devices to the study of the i/V characteristics of Au nanoparticles at cryogenic temperatures. These data demonstrate that the performance of these easily produced, inexpensive, novel devices compares favorably to that of devices made using preexisting methods.

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Published date: 1 February 2006

Identifiers

Local EPrints ID: 37584
URI: http://eprints.soton.ac.uk/id/eprint/37584
ISSN: 0003-2700
PURE UUID: 12d0e40f-603b-4a8f-b69d-894b131a491a

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Date deposited: 25 May 2006
Last modified: 15 Jul 2019 19:04

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