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Title: 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 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. Lastly, 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.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [2] ;  [2] ;  [2]
  1. CEIT-IK4 & Tecnum (Univ. of Navarra), San Sebastian (Spain); SLAC National Accelerator Lab., Menlo Park, CA (United States)
  2. CEIT-IK4 & Tecnum (Univ. of Navarra), San Sebastian (Spain)
  3. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  4. Diamond Materials GmbH, Freiburg (Germany)
Publication Date:
Grant/Contract Number:
AC02-76SF00515
Type:
Accepted Manuscript
Journal Name:
Optical Materials Express
Additional Journal Information:
Journal Volume: 7; Journal Issue: 9; Journal ID: ISSN 2159-3930
Publisher:
Optical Society of America (OSA)
Research Org:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; laser materials processing; nanostructure fabrication; subwavelength structures, nanostructures; diamond machining
OSTI Identifier:
1394085