Dye molecules were selectively incorporated on the laser fabricated surface of poly(methyl methacrylate) by soaking the irradiated sample in an aqueous solution of dye molecules. The selectivity depended on the laser fluence. Dye molecules were observed only on the area irradiated at a laser fluence of 40 mJthinsp;cmminus;2thinsp;pulseminus;1, while at 570 mJthinsp;cmminus;2thinsp;pulseminus;1, dye molecules were not introduced on the ablated surface but were observed on the nonirradiated part hidden with a mesh mask. The spatial resolution of the simultaneous fabrication and chemical modification was a few micrometers. Multistep incorporation of dye molecules was also demonstrated. A metastable molecular species of a propagating radical was detected in the irradiated sample by ESR. Xhyphen;ray photoelectron spectroscopy of the surface fabricated at 40 mJthinsp;cmminus;2thinsp;pulseminus;1revealed the existence of oxygenhyphen;containing components. Contact angle measurements showed that the surface fabricated at low laser fluence was more hydrophilic than that at high fluence. Morphological changes of the surface were also considered to be responsible for the incorporation of the dye molecules. Among the various kinds of dye molecules, only the cationic molecules were incorporated, probably because of the interaction with polar chemical species on the fabricated surface. On the basis of these results, the incorporation mechanism was discussed.
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