Selective deposition of graphene sheets on a flexible substrate by a nonuniform electric field

Sooyeoun Oh, Hyunik Park, Younghun Jung, Ji Hyun Kim, Jiwan Kim, Min Suk Oh

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

This study reports on the precise positioning of high-quality graphene sheets on a flexible polyethylene naphthalate substrate using a dielectrophoretic (DEP) force. Positive DEP assembly is carried out using a 100kHz frequency AC signal with a peak-to-peak voltage of 10V. The presence and quality of the graphene flakes aligned around the prepatterned electrodes are characterized by scanning electron microscopy, optical microscopy, and micro-Raman spectroscopy. Current-voltage measurements were also used to evaluate the electrical properties of these flexible devices under varying compressive (-) and tensile (+) strain conditions up to ±0.6%, where the currents decreased with increasing strains.

Original languageEnglish
Article number020602
JournalJournal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures
Volume32
Issue number2
DOIs
Publication statusPublished - 2014 Jan 1

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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