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Near-field recording for small form factor optical disks

Published online by Cambridge University Press:  24 January 2007

Jin-Hong Kim
Jin-Hong Kim*
Affiliation:
Devices and Materials Lab., LG Electronics Institute of Technology, 16 Woomyeon-Dong, Seocho-Gu, Seoul 137-724, Korea
*
jinhkim@lge.com
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Abstract

Small form factor optical disk (SFFOD) with a diameter of 27.4 mm was prepared for a mobile application. Near-field recording (NFR) technology with a flying optical head is applied to SFFOD for high density and small volume. A problem of contamination was observed at the head-disk interface (HDI) for first-surface recording. As a solution of the problem, a cover-layer was laminated onto the disk to move the focal plane into the media, which could solve the contamination problem. An edge bead free cover-layer could be coated with UV curable resin by using an outer-ring technique during the spin coating process. A diamond-like carbon (DLC) film and a lubricant film were coated on the disk to reduce the HDI problems.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 37 , Issue 2 , February 2007 , pp. 175 - 180
Copyright
© EDP Sciences, 2007

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