Read-only optical recording medium with zno near-field...

Details Read-only optical recording medium with zno near-field... Read-only optical recording medium with zno near-field...

G - Physics

11

B

G11B 7/24 (2006.01) G11B 7/00 (2006.01)

Patent

CA 2415450

This invention relates to a read-only near-field optical disk using a zinc- oxide (ZnO) nano-structured thin film as the localized near-field optical interaction layer. This read-only near-field optical disk is a mufti-layered body at feast comprising: (a) a transparent substrate with pre-recorded pits or marks; (b) a reflection thin film; (c) a zinc-oxide (ZnO) nano-structured thin film which is capable of causing localized near-field optical interactions; (d) a first and a second protective and spacer layers formed above or below the localized near-field optical interaction layer, which are also made of transparent dielectric material. Ultrahigh density near-field optical readout can be achieved by localized near-field optical interaction between the zinc-oxide (ZnO) nano-structured thin film and the reflection layer on pre-recorded structure.

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