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High‐Speed Surface Structuring of Polycarbonate Using Direct Laser Interference Patterning: Toward 1 m 2 min −1 Fabrication Speed Barrier
Author(s) -
Lang Valentin,
Roch Teja,
Lasagni Andrés Fabián
Publication year - 2016
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201600173
Subject(s) - materials science , polycarbonate , fabrication , laser , micrometer , optics , interference (communication) , scanning electron microscope , optoelectronics , nanotechnology , composite material , physics , medicine , channel (broadcasting) , alternative medicine , electrical engineering , pathology , engineering
Periodic structures with micro‐ or sub‐micrometer resolution can be used to improve the mechanical, biological, or optical properties of surfaces. Direct laser interference patterning combines high resolution (sub‐micrometer feature sizes) with high fabrication speed. New processing heads for high‐speed laser interference patterning of polycarbonate are introduced, which provide effective patterning speeds up to 0.9 m 2 min –1 . The surface topography of the processed polymer is analyzed by confocal microscopy and scanning electron microscopy. Focused ion beam is used to create cross‐sections to determine the structuring mechanism. Finally, high‐speed interference patterning is compared to conventional direct laser writing.