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Title: Nanostructures fabricated on metal surfaces assisted by laser with optical near-field effects
Authors: Huang, S.M.
Hong, M.H. 
Lukiyanchuk, B.
Chong, T.C. 
Issue Date: Jul-2003
Citation: Huang, S.M.,Hong, M.H.,Lukiyanchuk, B.,Chong, T.C. (2003-07). Nanostructures fabricated on metal surfaces assisted by laser with optical near-field effects. Applied Physics A: Materials Science and Processing 77 (2) : 293-296. ScholarBank@NUS Repository.
Abstract: Nanostructures on metal film surfaces have been written directly using a pulsed ultraviolet laser. The optical near-field effects of the laser were investigated. Spherical silica particles (500-1000 nm in diameter) were placed on metal films. After laser illumination with a single laser shot, nanoholes were obtained at the original position of the particles. The mechanism for the formation of the nanostructure patterns was investigated and found to be the near-field optical resonance effect induced by the particles on the surface. The size of the nanohole was studied as a function of laser fluence and silica particle size. The experimental results show a good agreement with those of the relevant theoretical calculations of the near-field light intensity distribution. The method of particle-enhanced laser irradiation allows the study of field enhancement effects as well as its potential applications for nanolithography.
Source Title: Applied Physics A: Materials Science and Processing
ISSN: 09478396
Appears in Collections:Staff Publications

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