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

Catherine E. Gardner, Mohamed A. Ghanem, James W. Wilson, David C. Smith

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

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.

Original languageEnglish
Pages (from-to)951-955
Number of pages5
JournalAnalytical Chemistry
Volume78
Issue number3
DOIs
StatePublished - Feb 1 2006
Externally publishedYes

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