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© Yasushi Kuroda, Toshie Yaguchi, Takeo Kamino (Hitachi Science Systems, Ltd.)
© Tsuyoshi Oonishi (Hitachi High-Tech corporation)
The center photograph shows a secondary electron (SE) image of the smallest diamond ring in the world. The surrounding photographs are scanning ion microscope (SIM) images, which show the creation process.
A piece of coiled tungsten with a 30 µm diameter was cut using an established FIB micro-sampling technique to make the disk. A 10 µm -diameter gemstone was selected, placed, and secured to the ring using a micro-manipulator and FIB metal deposition. The result is"a brilliant 5~10-9carat diamond ring".
Gold Prize. At 60th photo contest hosted by the Japanese Society of Microscopy (8APEM) in 2004.