Reversible electrical modification on conductive polymer for proximity probe data storage

Shinya Yoshida, Takahito Ono, Shuichi Oi, Masayoshi Esashi

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


Reversible electrical modification of a conductive polymer is studied for ultrahigh density data storage based on a scanning probe microscope (SPM). Using a surface-initiated polymerization (SIP) method, a thin polyaniline film is formed from a self-assembled monolayer (SAM) on an Au surface. The conductivity of the film is reversibly changed by applying a voltage between a SPM probe and the film, depending on the polarity of the applied voltage. This reversible electrical modification is considered to originate in the oxidation-reduction reaction or protonation-deprotonation reaction of PANI from x-ray photoelectron spectroscopy (XPS) measurement.

Original languageEnglish
Pages (from-to)2516-2520
Number of pages5
Issue number11
Publication statusPublished - 2005 Nov 1
Externally publishedYes

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering


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