nanochip 2008-05-09 12:47
Two-photon induced fabrication of gold microstructures in thin films
[b]Appl. Phys. Lett.[/b] 92, 171103 (2008); DOI:10.1063/1.2917810 Published 28 April 2008
[b][color=DarkRed][size=3]Two-photon induced fabrication of gold microstructures in polystyrene sulfonate thin films using a ruthenium(II) dye as photoinitiator[/size][/color][/b]
Gold microstructures are produced with a femtosecond laser in thin films of a polystyrene sulfonate matrix containing gold ions. Two-photon induced metal reduction is obtained by addition of 0.1 wt % of ruthenium(II)tris(bipyridine) in the formulation. Laser power is reduced to 5 mW, thereby limiting thermal effects. Lines of typically 150 nm heights and 1 µm widths are fabricated as well as freestanding bidimensional structures. An additional electroless plating step produces gold structures with conductivities only ten times smaller than the bulk metal. ©2008 American Institute of Physics
[url]http://link.aip.org/link/?APPLAB/92/171103/1[/url]