Ultrahigh density data storage by atomic manipulation

Ryo Imura; Hajime Koyanagi; M. Miyamoto; Toshimichi Shintani; Kimio Nakamura; Atsushi Kikukawa; Sumio Hosaka

doi:10.1117/12.190165

12 October 1994 Ultrahigh density data storage by atomic manipulation

Ryo Imura, Hajime Koyanagi, M. Miyamoto, Toshimichi Shintani, Kimio Nakamura, Atsushi Kikukawa, Sumio Hosaka

Proceedings Volume 2338, 1994 Topical Meeting on Optical Data Storage; (1994) https://doi.org/10.1117/12.190165
Event: Optical Data Storage '94, 1994, Dana Point, CA, United States

Abstract

Feasibility of ultrahigh density information data storage has been newly demonstrated by using an atomic force microscope (AFM) and a scanning near-field optical microscope (SNOM). Ultrasmall gold dots about 20 to 80 nm in diameter could be stably formed on Si substrate in air by adjusting an applied pulsed voltage of AFM probe coated with gold thin film. Magnetic domains about 60 to 80 nm in diameter also could be successfully recorded on magneto optical disk material (Pt/Co multilayer) by controlling a writing pulsed laser power of sharp fiber probe with SNOM. These indicate that this technique has a potential to realize a storage density of more than 100 Gb/in² and even 1 Tb/in².

Citation Download Citation

Ryo Imura, Hajime Koyanagi, M. Miyamoto, Toshimichi Shintani, Kimio Nakamura, Atsushi Kikukawa, and Sumio Hosaka "Ultrahigh density data storage by atomic manipulation", Proc. SPIE 2338, 1994 Topical Meeting on Optical Data Storage, (12 October 1994); https://doi.org/10.1117/12.190165

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