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Fabrication of a high throughput apertured tip by the use of birds beak effect: a potential fabrication technique for near-field optical data storage

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5 Author(s)
Ki-Bong Song ; Basic Res. Lab., Korea Electron. & Telecommun. Res. Inst., Daejeon, South Korea ; Sung-Q Lee ; Kim, JunHo ; Jeongyong Kim
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An optical recording device with an atomic force microscope (AFM) tip, having a sub wavelength aperture, has been considered as one of candidates for Th/in2 data density in near-field optical storage technology. However, the low optical throughput of a near field aperture limits the practical use of the near-field optical storage technique. This limit can be avoided by the enhancement of the throughput of the near-field apertured tip and the development of new recording media with low phase change temperature. To increase the optical throughput of an AFM/near field apertured tip, several fabrication techniques have been proposed so far. In this paper we present a simple fabrication process of a near-field high throughput apertured tip using a bird's beak effect. Using the bird's beak effect and field oxidation, a higher throughput aperture and larger cone angled tip are fabricated, simultaneously.

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Optical Memory and Optical Data Storage Topical Meeting, 2002. International Symposium on

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