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Appl. Sci. 2018, 8(8), 1260;

Biomimetic Surface Structuring Using Laser Based Interferometric Methods

Institute for Manufacturing Technology, Technische Universität Dresden, 01069 Dresden, Germany
Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS, Winterbergstr. 28, 01277 Dresden, Germany
Author to whom correspondence should be addressed.
Received: 13 July 2018 / Revised: 23 July 2018 / Accepted: 25 July 2018 / Published: 31 July 2018
(This article belongs to the Special Issue Biomimetic Laser Processing)
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This review investigates the capabilities of laser-based interferometric methods for producing structures with multiple-scaled surface features imitating natural examples. Firstly, laser interference lithography is used to produce hierarchical patterns with length-scales in the micrometer and sub-micrometer range. Different strategies are discussed to produce a wide variety of periodic arrays, depending on the number of resist lasers used as well as the way in which the exposure steps are organized. After that, periodic patterns are fabricated on polymers using ns laser pulses from an UV-laser system. Additionally in this case, multiple-scale patterns are produced by using different strategies. A similar approach is described to treat metallic surfaces of steel X6Cr17 and a titanium alloy Ti6Al4V. The geometry of the produced microstructures was characterized using scanning electron microscopy and confocal microscopy. Measurement of water contact angle is performed for both polymer and metallic surfaces. View Full-Text
Keywords: biomimetic structures; Direct Laser Interference Patterning; surface functionalization; hierarchical structures; wettability biomimetic structures; Direct Laser Interference Patterning; surface functionalization; hierarchical structures; wettability

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Lasagni, A.F.; Alamri, S.; Aguilar-Morales, A.I.; Rößler, F.; Voisiat, B.; Kunze, T. Biomimetic Surface Structuring Using Laser Based Interferometric Methods. Appl. Sci. 2018, 8, 1260.

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