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© Shuichi Takeuchi, Mine Nakagawa, Ryuichiro Tamochi (Hitachi Science Systems, Ltd.)

Tropical fish are swimming in a micro-aquarium.
This micrograph shows Ag-In-Sb-Te alloys, the recording layer of a DVD-RW(Digital Versatile Disc Rewritable), taken by a FE-SEM in the low voltage BSE(Backscattered Electron) mode.
The tropical fish are actually recording marks where a phase change from a crystalline to an amorphous structure has occurred due to strong laser beam irradiation. To read data on the DVD, the reflection of a weak laser beam converts the digital data array to a series of 0's and 1's. The writing process generates multiple recording marks that become our tropical fish in this micro-aquarium.

At 60th photo contest hosted by the Japanese Society of Microscopy (8APEM) in 2004.


Specimen: DVD-RW

Instrument: Ultra-high Resolution Scanning Electron Microscope S-4800

Magnification: × 15,000

Accelerating voltage: 1 kV

*All information related to these photographers is based on the information when the photo was taken.

*This work was presented at the "photo contest" hosted by the Japanese Society of Microscopy.

*Reproduction or republication without permission prohibited.

*"nanoart" is registered trademark of Hitachi High-Tech Corporation in Japan.

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