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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/031/03/0277-0282

    • Keywords

       

      Gold nanoparticles; 2D array; spin-coating; self-assembly; TEM; AFM.

    • Abstract

       

      A method of preparing large area patterned 2D arrays of uncapped gold (Au) nanoparticles has been developed. The pattern has been formed using self-assembly of uncapped Au nanoparticles. The Au nanoparticles were synthesized via toluene/water two phase systems using a reducing agent and colloidal solution of Au nanoparticles was produced. These nanoparticles have been prepared without using any kind of capping agent. Analysis by TEM showed discrete Au nanoparticles of 4 nm average diameter. AFM analysis also showed similar result. The TEM studies showed that these nanoparticles formed self-assembled coherent patterns with dimensions exceeding 500 nm. Spin coating on silicon substrate by suitably adjusting the speed can self-assemble these nanoparticles to lengths exceeding 1 𝜇m.

    • Author Affiliations

       

      Anindya Das1 Soma Das1 A K Raychaudhuri1

      1. DST Unit for Nanoscience, S.N. Bose National Centre for Basic Sciences, Kolkata 700 098, India
    • Dates

       
  • Bulletin of Materials Science | News

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