Fabrication of gold micro- and nanostructures by photolithographic exposure of thiol-stabilized gold nanoparticles

Nano Letters
Shuqing SunTim H Richardson

Abstract

Exposure of thiol-stabilized gold nanoparticles supported on silicon wafers to UV light leads to oxidation of the thiol molecules and coagulation of the nanoparticles, forming densified structures that are resistant to removal by solvent exposure. Unoxidized particles may, in contrast, readily be removed leaving gold structures behind at the surface. This process provides a convenient and simple route for the fabrication of gold structures with dimensions ranging from micrometers to nanometers. The use of masks enables micrometer-scale structures to be fabricated rapidly. Exposure of nanoparticles to light from a near-field scanning optical microscope (NSOM) leads to the formation of gold nanowires. The dimensions of these nanowires depend on the method of preparation of the film: for spin-cast films, a width of 200 nm was achieved. However, this was reduced significantly, to 60 nm, for Langmuir-Schaeffer films.

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Citations

Nov 5, 2014·Artificial Cells, Nanomedicine, and Biotechnology·Roya HerizchiAbolfazl Akbarzadeh
Mar 12, 2016·ACS Nano·Haogang CaiShalom J Wind
Jun 16, 2015·Journal of Environmental Science and Health. Part C, Environmental Carcinogenesis & Ecotoxicology Reviews·Ying ZhangHongtao Yu
Apr 22, 2014·ACS Applied Materials & Interfaces·Yasuhiro ShiraishiTakayuki Hirai
Jun 28, 2013·Angewandte Chemie·Yasuhiro ShiraishiTakayuki Hirai
Mar 21, 2013·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Zhongde MuZhongze Gu
Oct 14, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Siyuan Chen, Lloyd M Smith
Feb 19, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Mark W SugdenGraham Leggett
Feb 10, 2011·Journal of the American Chemical Society·Shahrul A Alang AhmadJason Micklefield
Nov 4, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Jung Su ParkSangwoon Yoon

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