Enhancement of surface area and wettability properties of boron doped diamond by femtosecond laser-induced periodic surface structuring

We demonstrate the formation of laser-induced periodic surface structures (LIPSS) in boron-doped diamond (BDD) by irradiation with femtosecond near-IR laser pulses. The results show that the obtained LIPSS are perpendicular to the laser polarization, and the ripple periodicity is on the order of hal...

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Bibliographic Details
Published in:Optical materials express 2017-09, Vol.7 (9), p.3389
Main Authors: Granados, Eduardo, Calderon, Miguel Martinez, Krzywinski, Jacek, Wörner, Eckhard, Rodriguez, Ainara, Aranzadi, Mikel Gomez, Olaizola, Santiago M.
Format: Article
Language:English
Subjects:
Atomic force microscopy
Boron
Current efficiency
diamond machining
Diamonds
Electrochemical analysis
Electrochemical oxidation
Electrode polarization
Electrodes
Energy consumption
Femtosecond pulses
Irradiation
laser materials processing
Lasers
MATERIALS SCIENCE
nanostructure fabrication
Periodic variations
Properties (attributes)
Substrates
subwavelength structures, nanostructures
Surface area
Texturing
Wettability
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Summary:We demonstrate the formation of laser-induced periodic surface structures (LIPSS) in boron-doped diamond (BDD) by irradiation with femtosecond near-IR laser pulses. The results show that the obtained LIPSS are perpendicular to the laser polarization, and the ripple periodicity is on the order of half of the irradiation wavelength. The surface structures and their electrochemical properties were characterized using Raman micro-spectroscopy, in combination with scanning electron and atomic force microscopies. The textured BDD surface showed a dense and large surface area with no change in its structural characteristics. The effective surface area of the textured BDD electrode was approximately 50% larger than that of a planar substrate, while wetting tests showed that the irradiated area becomes highly hydrophilic. Our results indicate that LIPSS texturing of BDD is a straightforward and simple technique for enhancing the surface area and wettability properties of the BDD electrodes, which could enable higher current efficiency and lower energy consumption in the electrochemical oxidation of toxic organics.
ISSN:2159-3930
2159-3930
DOI:10.1364/OME.7.003389