Cover-Layer with High Refractive Index for Near-Field Recording Media
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概要
- 論文の詳細を見る
TiO2 nanoparticles are added into UV-curable resin to increase the refractive index of the cover-layer laminated for cover-layer incident near-field recording media. A high refractive index is required for the cover-layer operating with an optical head with a high numerical aperture. The eye pattern from a cover-layer coated 20 GB read-only memory disc in which the refractive index of the cover-layer is 1.75 is achieved, but the gap servo is unstable owing to the rough surface of the cover-layer. Even though the light loss due to the nanoparticles is negligible, a rough microstructure is developed by adding the nanoparticles into an organic binder material. To achieve a smooth surface for a stable gap servo, the solubility of the nanoparticles should be enhanced by the optimization of the surface of the nanoparticles.
- 2007-06-30
著者
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Kim Jin-hong
Devices And Materials Lab. Lg Corporate Institute Of Technology
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Lee Jun-Seok
Devices and Materials Laboratory, LG Elite, Seoul 137-724, Korea
関連論文
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- Improvement of Cover-Layer Surface Properties for Near-Field Optical Recording
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