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Protein retention on plasma-treated hierarchical nanoscale gold-silver platform

  • Fang, Jinghua
  • Levchenko, Igor
  • Mai-Prochnow, Anne
  • Keidar, Michael
  • Cvelbar, Uros
  • Filipic, Gregor
  • Han, Zhao
  • Ostrikov, Ken
Publication Date
Jan 01, 2015
Queensland University of Technology ePrints Archive
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Dense arrays of gold-supported silver nanowires of about 100 nm in diameter grown directly in the channels of nanoporous aluminium oxide membrane were fabricated and tested as a novel platform for the immobilization and retention of BSA proteins in the microbial-protective environments. Additional treatment of the silver nanowires using low-temperature plasmas in the inductively-coupled plasma reactor and an atmospheric-pressure plasma jet have demonstrated that the morphology of the nanowire array can be controlled and the amount of the retained protein may be increased due to the plasma effect. A combination of the neutral gold sublayer with the antimicrobial properties of silver nanowires could significantly enhance the efficiency of the platforms used in various biotechnological processes.

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