Abstract
In this study, gold enhanced laser induced periodic surface structures (LIPSS) were prepared on polyethersulphone (PES) substrate. We introduce here new easy method how to prepare periodic structures with gold nanoparticles incorporated into the polymer bulk. This metal-polymer composite samples can be useful materials in microelectronic industries merging both conductive and flexible properties. Gold nanoparticles were sputtered on PES polymer and than thermally annealed. Following surface modification was carried out by polarized KrF laser beam with laser fluence of 4–28 mJ·cm−2 and number of pulses up to 6000. The surface morphology of modified samples were analysed with atomic force microscopy and scanning electron microscopy with focused ion beam. For determination of elemental composition we used the X-ray photoelectron spectroscopy and energy dispersive X-ray spectroscopy. This research is focused on roughness and surface chemistry study in laser modified area, where enhanced LIPSS with incorporated noble nanoparticles were fabricated. Measurements of modified samples confirmed gold concentrations in LIPSS both on surface and in ripple volume, this unique constructed pattern makes this simple method a new way to prepare suitable material for SERS substrate or also as other biosensor application.
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