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Analytical Systems, Electron Microscopes & Medical Systems




© 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.