Multilayer Graphene Grid and Nanowire Fabrication and Printing
Abstract
Molecular sensor development requires the fabrication of structures with nanometer precision. Recently, graphene or few-layer graphene (FLG) has been proposed as a material for making advanced electronic devices. The transport properties of graphene, a single-atom-thick layer of graphite (roughly 0.35 nm), are influenced by atomic-scale defects, and, more importantly from a sensor perspective, by adsorbates and the local electronic environment. Highly oriented pyrolytic graphite (HOPG) is one of the best precursors for generating high-quality, crystalline graphene. At the same time, efforts have been made to tailor graphene sheets into nanoscale features. We have developed a method for printing graphene nanowires onto polydimethylsiloxane (PDMS) substrates without using any wet chemical processing. The potential for simplicity, speed, and reproducibility anticipated for lithographic patterning via contact printing on a transparent, biocompatible, and flexible surface makes this combination of methods and materials a strong candidate for nanofabrication of platforms supporting sensing nanoarchitectures. The process described in this report increases the potential of graphene as an improved substrate requiring simple chemical modification for the preparation of active sites for the potential localization of biomolecules such as DNA and for controlling the electrical conductivity of graphene wires.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 11, 2014
- Accession Number
- AD1010746
Entities
People
- Masudur Rahman
- Michael L. Norton
Organizations
- Marshall University