Correlation between sp2/sp3 Ratio or Hydrogen Content and Water Contact Angle in Hydrogenated DLC Film
- 1 January 2007
- journal article
- Published by Japan Institute of Metals in MATERIALS TRANSACTIONS
- Vol. 48 (9), 2534-2538
- https://doi.org/10.2320/matertrans.mer2007044
Abstract
Water contact angle has been measured to indirectly assess the sp2/sp3 ratio and hydrogen content of DLCH film under post N2 annealed treatment with O2 content under 100 ppm. XPS spectrum is used to measure the C1s bonding type and calculate the sp 2/sp3 ratio. The surface morphology of DLCH film was examined by SEM and AFM. From experimental results, it seems the surface morphology was not a critical factor on water contact angle value, at least for DLCH film. A quantitative correlation between water contact angle and sp2/sp3 ratio of DLCH film is established from which the hydrogen content can be estimated by the sp2/sp3 ratio as well as Angus equation. [doi:10.2320/matertrans.MER2007044Keywords
This publication has 45 references indexed in Scilit:
- Thermal stability of Cr-doped diamond-like carbon films synthesized by cathodic arc evaporationThin Solid Films, 2005
- Relation between physical structure and electrical properties of diamond-like carbon thin filmsDiamond and Related Materials, 2005
- Improving the properties of diamond-like carbonDiamond and Related Materials, 2003
- Resonant Raman studies of tetrahedral amorphous carbon filmsDiamond and Related Materials, 2001
- Chemical, mechanical and tribological characterization of ultra-thin and hard amorphous carbon coatings as thin as 3.5 nm: recent developmentsDiamond and Related Materials, 1999
- Ultraviolet Raman characterisation of diamond-like carbon filmsDiamond and Related Materials, 1999
- Direct evaluation of the sp3 content in diamond-like-carbon films by XPSApplied Surface Science, 1998
- Effect of negative bias voltage on a-C:H films deposited in electron cyclotron resonance plasmaDiamond and Related Materials, 1997
- Direct observation of sp3 bonding in tetrahedral amorphous carbon using ultraviolet Raman spectroscopyApplied Physics Letters, 1997
- Separation of theandcomponents in the C1sphotoemission spectra of amorphous carbon filmsPhysical Review B, 1996