Laser-assisted etching of diamonds in air and in liquid media
| Autor: | George A. Shafeev |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Materials science
Material properties of diamond fungi technology industry and agriculture Analytical chemistry Diamond chemistry.chemical_element macromolecular substances Chemical vapor deposition Glassy carbon engineering.material symbols.namesake stomatognathic system chemistry Etching (microfabrication) hemic and lymphatic diseases engineering symbols Raman spectroscopy Layer (electronics) Carbon |
| Zdroj: | Lasers in Synthesis, Characterization, and Processing of Diamond. |
| ISSN: | 0277-786X |
| DOI: | 10.1117/12.328201 |
| Popis: | O, (CH3)2SO). Diamond samples are virtually transparent at this wavelength, and the coupling of laser radiation to diamond is via the formation of a thin graphitized layer at the diamond surface. The etching rate in liquid media is slightly higher than in air at otherwise equal conditions and is as high as 50 μm/s for etching with a scanning laser beam. Raman spectra measurements carried out on diamond samples etched in air show the presence of glassy carbon on the surface, whereas for samples etched in a liquid the diamond peak at 1332 cm-1 dominates with significantly lower intensity of the glassy carbon peak. Electroless copper deposition on the laser-etched features is studied to compare the catalytic activity of the diamond surface etched in air with that etched in liquids. Possible mechanisms responsible for the observed difference both in the structure of the etched area and in the electroless Cu deposition onto the surface etched in various media (air or liquids) are discussed. |
| Databáze: | OpenAIRE |
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