Thermomechanical data storage using a fiber optic stylus
- 17 January 1994
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 64 (3), 267-269
- https://doi.org/10.1063/1.111176
Abstract
We have developed a simple and fast surface modification technique for possible data storage applications. Writing is accomplished by heating the metallized tip of a tapered optical fiber with microsecond laser pulses. The heated tip, which is in contact with a polycarbonate substrate, creates a nanoindentation. Deflections of this same tip are used to detect the written marks, as in atomic force microscopy. The marks have sharp edges with 10%–90% transition widths of 0.2 μm, and have been written with laser pulses as short as 5 μs at repetition rates of 50 kHz. Readback has been performed over 300 kHz on a spinning sample. Substantial improvements in mechanical response and wear properties are seen compared to micromachined cantilevers.Keywords
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