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HNU Researchers Make Hair-sized University Logo

HNU researchers developed an inkless printing technology which can produce at 50000 dpi. It is adapted to extremely high resolution printing. The research has been published at Advanced Optical Materials (DOI:10.1002/adom.201600110).

The research team was led by Prof. Duan Huigao and Dr. Zhou Yanming from the School of Physics and Electronics of Hunan University. They used this technology to produce the smallest university logo, in 250 micrometers size and 500*500 pixel, to mark the 1040 anniversary of the founding of Yuelu Academy and the 90th anniversary of naming of Hunan University.

Optical design, advanced photoetching, coating film, and computer graphics were integrated in this micro logo production. High-resolution optical microscope was used for photographing.
This technology is expected to be widely used in the fields of anti-fake image and text in micro size, green printing, and intelligent color change.

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