Multifunctional Hierarchical Surface Structures by Femtosecond Laser Processing

Materials
Clemens KunzStephan Gräf

Abstract

Hierarchical surface structures were fabricated on fused silica by using a fs-laser with a pulse duration τ = 300 fs and a wavelength λ = 512 nm. The resulting surface structures were characterized by scanning electron microscopy, atomic force microscopy and white light interference microscopy. The optical properties were analyzed by transmittance measurements using an integrating sphere and the wettability was evaluated by measuring the water contact angle θ. The silanization of structured fused silica surfaces with trichloro(1H,1H,2H,2H-perfluorooctyl)silane allows to switch the wettability from superhydrophilic (θ = 0°) to superhydrophobic behavior with θ exceeding 150°. It was shown that the structured silica surfaces are a suitable master for negative replica casting and that the hierarchical structures can be transferred to polystyrene. The transmittance of structured fused silica surfaces decreases only slightly when compared to unstructured surfaces, which results in high transparency of the structured samples. Our findings facilitate the fabrication of transparent glass samples with tailored wettability. This might be of particular interest for applications in the fields of optics, ...Continue Reading

References

Nov 2, 2001·Nature·A R Parker, C R Lawrence
Oct 26, 2002·Physical Review Letters·L SudrieA Mysyrowicz
Aug 25, 2004·Langmuir : the ACS Journal of Surfaces and Colloids·Woo LeeJin-Kyu Lee
Nov 10, 2005·Nano Letters·W MingG de With
Nov 1, 2006·Langmuir : the ACS Journal of Surfaces and Colloids·Yonghao XiuC P Wong
Jun 2, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Fengxiang Zhang, Hong Yee Low
Jan 26, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Barbara CorteseGiuseppe Gigli
Jul 28, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·H Yildirim Erbil, C Elif Cansoy
Dec 22, 2009·Integrative Biology : Quantitative Biosciences From Nano to Macro·Valerie R BinettiCaroline L Schauer
Jun 4, 2013·Physical Chemistry Chemical Physics : PCCP·Esther RebollarMarta Castillejo
Jan 25, 2014·ACS Applied Materials & Interfaces·Ludmila B BoinovichPavel N Saltuganov
Feb 6, 2014·Langmuir : the ACS Journal of Surfaces and Colloids·Daiki MurakamiAtsushi Takahara
Sep 22, 2017·Materials·Oldřich NedělaVáclav Švorčík
Jan 25, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Elisabeth KostalMatthias Domke

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Methods Mentioned

BETA
scanning electron microscopy
atomic force microscopy
AFM
chemical modification

Software Mentioned

WLIM

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