Soft transfer printing of chemically converted graphene

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

Research output: Contribution to journalArticlepeer-review

162 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

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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