Growth of two-dimensional arrays of uncapped gold nanoparticles on silicon substrates

Bulletin of materials science

Anindya Das¹  A K Raychaudhuri¹  Soma Das¹ 

[1] DST Unit for Nanoscience, S.N. Bose National Centre for Basic Sciences, Kolkata 700 098, India$$DST Unit for Nanoscience, S.N. Bose National Centre for Basic Sciences, Kolkata 700 098, IndiaDST Unit for Nanoscience, S.N. Bose National Centre for Basic Sciences, Kolkata 700 098, India$$

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

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

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.

【 授权许可】

Unknown