Magnetic-field-assisted assembly of metal/polymer/metal junction sensors

Haiqian Zhang, Salah Boussaad, Nguyen Ly, Nongjian Tao

Research output: Contribution to journalArticlepeer-review

27 Scopus citations


A magnetic field assisted method to assemble an array of electrically wired polymer junctions functionalized with oligopeptides, was presented, for chemical sensor applications. The sensor building blocks consisted of (Au/Ni/Au) metallic bars, an array of parallel microelectrodes on silicon chip, and a thin layer of peptide-functionalized polyaniline deposited on the bars or the microelectrodes. The building blocks were assembled into the sensor by exposing the microelectrodes to a solution containing metal bars in the presence of a magnetic field. The distinctive features of the peptide-polymer-based sensor were direct conversion of an ionic binding event into an electrical signal, and small sensing element.

Original languageEnglish (US)
Pages (from-to)133-135
Number of pages3
JournalApplied Physics Letters
Issue number1
StatePublished - Jan 5 2004

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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