Soft transfer printing of chemically converted graphene

Matthew J. Allen, Vincent C. Tung, Lewis Gomez, Zheng Xu, Li Min Chen, Kurt S. Nelson, Chongwu Zhou, Richard B. Kaner, Yang Yang

Research output: Contribution to journalArticlepeer-review

178 Scopus citations

Abstract

A study was conducted to demonstrate a method for isolating graphite oxide and dispersing it directly in anhydrous hydrazine. A variety of controllable surface coverages were obtained after modification by dilution, centrifugation, or ultrasonication. It was observed that the prepared depositions were uniform and allowed for a range of coverage densities and sheet sizes. A transfer printing process enabled to register regions of graphene to designated areas of another substrate after deposition. The non-destructive printing process was capable of defining small features and transferring depositions to precise positions. The transfer mechanism was based on the differing strengths of non-covalent adhesion at the PDMS-graphene and graphene-substrate interfaces. It was observed that spin speed and the composition of hydrazine suspensions essentially determined the density of flakes in deposited films.

Original languageEnglish (US)
Pages (from-to)2098-2102
Number of pages5
JournalAdvanced Materials
Volume21
Issue number20
DOIs
StatePublished - May 25 2009
Externally publishedYes

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering

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