Write-once optical recording medium with ZnO near-field...

Details Write-once optical recording medium with ZnO near-field... Write-once optical recording medium with ZnO near-field...

2005-08-30

2005-08-30

Heinz, A. J. (Department: 2653)

Dynamic optical information storage or retrieval

Optical storage medium structure

Reexamination Certificate

active

06938266

ABSTRACT:
This invention is a write-once near-field optical medium using a zinc oxide nano-structured thin film as the localized near-field optical interaction layer. This write-once near-field optical medium is a multi-layered body at least comprising: (a) a substrate of transparent material; (b) a first protective and spacer layer formed on one surface of the substrate, which is made of transparent dielectric material; (c) a zinc oxide nano-structured thin film which is capable of causing localized near-field optical interactions; (d) a second protective and spacer layer formed on the localized near-field optical interaction layer, which is also made of transparent dielectric material; (e) a write-once recording layer; (f) a third protective and spacer layer formed on the write-once recording layer, which is also made of transparent dielectric material. Ultra-high density near-field optical recording can be achieved by the localized near-field optical interactions of the zinc-oxide (ZnO) nano-structured thin film that is in the near-field region of the write-once recording layer.

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