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dc.contributor.authorCui, Jing-
dc.contributor.authorNogales, Aurora-
dc.contributor.authorEzquerra, Tiberio A.-
dc.contributor.authorRebollar, Esther-
dc.identifierdoi: 10.1016/j.apsusc.2016.10.045-
dc.identifierissn: 0169-4332-
dc.identifier.citationApplied Surface Science 394: 125-131 (2017)-
dc.description7 pags., 6 figs., 3 tabs.-
dc.description.abstractHere we focus on the influence of both, substrate and film thickness on polymer Laser Induced Periodic Surface Structures (LIPSS) formation in polymer films. For this aim a morphological description of ripples structures generated on spin-coated polystyrene (PS) films by a linearly polarized laser beam with a wavelength of 266 nm is presented. The influence of different parameters on the quality and characteristics of the formed laser-induced periodic surface structures (LIPSS) was investigated. We found that well-ordered LIPSS are formed either on PS films thinner than 200 nm or thicker than 400 nm supported on silicon substrates as well as on thicker free standing films. However less-ordered ripples are formed on silicon supported films with intermediate thicknesses in the range of 200–380 nm. The effect of the thermal and optical properties of the substrate on the quality of LIPSS was analyzed. Differences observed in the fluence and number of pulses needed for the onset of surface morphological modifications is explained considering two main effects which are: (1) The temperature increase on polymer surface induced by the action of cumulative laser irradiation and (2) The differences in thermal conductivity between the polymer and the substrate which strongly affect the heat dissipation generated by irradiation.-
dc.description.sponsorshipThis work has been supported by Spanish Ministry of Economy and Competitiveness (MINECO) through projects CTQ2013-43086-P, MAT2014-59187-R, and MAT2015-66443-C02-1-R. J.C acknowledges the China Scholarship Council for funding her research (File NO. 201207040083). E.R. also thanks MINECO for a Ramón y Cajal contract (RYC-2011-08069).-
dc.subjectFilm thickness-
dc.subjectPulse accumulation-
dc.subjectSubstrates properties-
dc.subjectLaser-induced periodic surface structures-
dc.titleInfluence of substrate and film thickness on polymer LIPSS formation-
dc.description.versionPeer Reviewed-
dc.contributor.funderChina Scholarship Council-
dc.contributor.funderMinisterio de Economía y Competitividad (España)-
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