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Micro Diamond Ring

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.

Condition

Instrument for making Micro Diamond Ring : Focused Ion Beam System FB-2100

Magnification: X 700(1), X 1,200(2-12), X 3,000(13-19)

Accelerating voltage: 40 kV

Instrument: Ultra-thin Film Evaluation System HD-2300

Magnification: X 2,000(20)

Accelerating voltage: 200 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.

The Japanese Society of Microscopy

*Reproduction or republication without permission prohibited.