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Direct Surface Patterning from Solutions: Localized Microchemistry Using a Focused Laser
Author(s) -
LachishZalait A.,
Zbaida D.,
Klein E.,
Elbaum M.
Publication year - 2001
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/1616-3028(200106)11:3<218::aid-adfm218>3.0.co;2-t
Subject(s) - materials science , microscale chemistry , laser , surface modification , nanotechnology , lithography , reagent , substrate (aquarium) , deposition (geology) , microchemistry , copper , chemical engineering , optoelectronics , optics , metallurgy , organic chemistry , chromatography , mathematics , oceanography , paleontology , chemistry , physics , mathematics education , sediment , geology , biology , engineering
Abstract A method for creating microscale‐patterned surfaces by direct‐write lithography is described. A tightly focused, low‐power infrared laser beam is applied to a homogeneous precursor solution containing soluble reagents. When the laser is focused directly at a glass–solution interface, it initiates the local precipitation of a solid product that attaches firmly to the substrate. Operating the laser momentarily forms isolated spots, whereas moving the microscope stage or the laser spot draws continuous lines. The method has been demonstrated for metallic silver and gold, for oxidized copper, and for molybdenum disulfide, suggesting a broad range of suitable materials. Silver patterns were further modified by chemical reactions. Their morphology and physical properties can be altered during deposition by the use of capping agents, which may provide an onset for further functionalization.