期刊
ACS APPLIED MATERIALS & INTERFACES
卷 7, 期 5, 页码 3162-3169出版社
AMER CHEMICAL SOC
DOI: 10.1021/am5074968
关键词
laser-induced periodic surface structures; polymer; thin films; microfocus; grazing incidence small-angle X-ray scattering
资金
- MINECO [MAT2009-07789, CTQ2010-15680, CTQ2013-43086, MAT2011-23455, MAT2012-33517, FPI BES-2010-030074]
- MINECO (Ramon y Cajal Contract) [RYC-2011-08069]
In this work we present an accurate mapping of the structural order of laser-induced periodic surface structures (LIPSS) in spin-coated thin polymer films, via a microfocus beam grazing incidence small-angle X-ray scattering (mu GISAXS) scan, GISAXS modeling, and atomic force microscopy imaging all along the scanned area. This combined study has allowed the evaluation of the effects on LIPSS formation due to nonhomogeneous spatial distribution of the laser pulse energy, mapping with micrometric resolution the evolution of the period and degree of structural order of LIPSS across the laser beam diameter in a direction perpendicular to the polarization vector. The experiments presented go one step further toward controlling nanostructure formation in LIPSS through a deep understanding of the parameters that influence this process
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