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Growth of two-dimensional arrays of uncapped gold nanoparticles on silicon substrates
Anindya Das Soma Das A K Raychaudhuri
Volume 31 Issue 3 June 2008 pp 277-282
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Fulltext
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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.
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Author Affiliations
Anindya Das1 Soma Das1 A K Raychaudhuri1
- DST Unit for Nanoscience, S.N. Bose National Centre for Basic Sciences, Kolkata 700 098, India
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Dates
- Published
- June 2008
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Bulletin of Materials Science
Volume 46, 2023
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