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- W2020331292 abstract "Hydrogen-free DLC films has been deposited by femtosecond laser pulse onto (1 0 0) p-type silicon substrates. The laser used for deposition has a pulse energy from 0.4mJ to1.6mJ and pulse width of about 50 fs with the repetition rate of 1 kHz. The laser intensities on the target are from 0.7×10<sup>14</sup>W/cm<sup>2</sup> to 2.8×10<sup>14</sup>W/cm<sup>2</sup>. Uniform and wear-resistant DLC films is deposited with fs laser ablating a high purity graphite target at room temperature in vacuum. It is shown that the films has a good hardness ranged from 20 GPa to 30 GPa. Raman spectroscopy, X-ray Photoelectron Spectroscopy and micro-hardness are used to analyze the comprehensive performance of the films, and the results show that the films deposited at the laser intensity of 1.4×10<sup>14</sup>W/cm<sup>2</sup> has better hardness and a higher sp<sup>3</sup> content. The sp<sup>3</sup> fraction of the films is estimated to be as high as 45.6%." @default.
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- W2020331292 date "2007-11-29" @default.
- W2020331292 modified "2023-09-28" @default.
- W2020331292 title "Diamond-like carbon films deposited by femtosecond laser pulses" @default.
- W2020331292 doi "https://doi.org/10.1117/12.757418" @default.
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