Direct surface patterning from solutions: Localized microchemistry using afocused laser

Citation
A. Lachish-zalait et al., Direct surface patterning from solutions: Localized microchemistry using afocused laser, ADV FUNCT M, 11(3), 2001, pp. 218-223
Citations number
24
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
ADVANCED FUNCTIONAL MATERIALS
ISSN journal
1616301X → ACNP
Volume
11
Issue
3
Year of publication
2001
Pages
218 - 223
Database
ISI
SICI code
1616-301X(200106)11:3<218:DSPFSL>2.0.ZU;2-E
Abstract
A method for creating microscale-patterned surfaces by direct-write lithogr aphy is described. A tightly focused, low-power infrared laser beam is appl ied to a homogeneous precursor solution containing soluble reagents. When t he laser is focused directly at a glass-solution interface, it initiates th e local precipitation of a solid product that attaches firmly to the substr ate. Operating the laser momentarily forms isolated spots, whereas moving t he microscope stage or the laser spot draws continuous lines. The method ha s been demonstrated for metallic silver and gold, for oxidized copper, and for molybdenum disulfide, suggesting a broad range of suitable materials. S ilver patterns were further modified by chemical reactions. Their morpholog y and physical properties can be altered during deposition by the use of ca pping agents, which may provide an onset for further functionalization.