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Direct Laser Interference Writing of Silver Gratings

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A novel maskless method of creating Ag gratings, down to a pitch as low as 220 nm, is presented in the paper. This is based on the direct laser interference of two HeCd laser beams ( = 325 nm) in a solution of sodium citrate and silver nitrate, where photochemically reduced silver gratings of different pitch lengths can be directly written on various substrates such as polystyrene, BK7 glass, Si wafer, etc. This paper discusses the underlying principle and demonstrates the silver gratings of different scales achievable.


Document Type: Short Communication

Publication date: April 1, 2011

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  • Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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