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Balls of Duckweed

Balls of Duckweed
© Yasushi Kuroda, Toshie Yaguchi (Hitachi Science Systems, Ltd.)
© Takahito Hashimoto (Instrument Division, Hitachi, Ltd.)
© Kazuyuki Tohji (Tohoku University)

These balls are magnetic particles of about 1 micron in diameter attached on carbon paste. These balls produce specific color by selective light reflection due to optical interference. They are called stratified particles. The picture was recorded using a 200 kV SEM. These stratified particles look like balls of duckweed growing in the bottom of a fresh water lake under the sunshine.

At 55th photo contest hosted by the Japanese Society of Electron Microscopy in 1999.


Specimen : Stratified particles used for toner of copy machines

Instrument : Ultra-thin Film Evaluation System HD-2000

Accelerating voltage : 200 kV

Specimen : Courtesy of Professor Kazuyuki Tohji (Tohoku University)

*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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