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JST Press Release

18th April 2013
Japan Science and Technology Agency (JST)
5-3, Yonbancho, Chiyoda-ku, Tokyo 102-8666
URL http://www.jst.go.jp/EN/index.html

Making a movie of structure change on the picosecond time scale in an organic crystal
— Development of a compact electron diffraction system using an ultrashort pulse laser —

We have developed a technique for direct observation of crystal structure change in organic materials with the time resolution of two-trillionth seconds using an ultrafast and ultrabright electron beam and succeeded in making a molecular movie of an organic photo-switching material. This technique is expected to be an analytical method for such as functions of proteins and reactions of artificial photosynthesis.

Researcher Information

JST CREST Research Area “Enhancing Applications of Innovative Optical Science and Technologies by Making Ultimate Use of Advanced Light Sources”,
Research Theme : “Development of the frontier of nonequilibrium materials leaded by optical science”

Journal Information

Published in “Nature”, Nature is a weekly international journal publishing the finest peer-reviewed research in all fields of science and technology.
Meng Gao, Cheng Lu, Hubert Jean-Ruel, Lai Chung Liu, Alexander Marx, Ken Onda, Shin-ya Koshihara, Yoshiaki Nakano, Xiangfeng Shao, Takaaki Hiramatsu, Gunzi Saito, Hideki Yamochi, Ryan R. Cooney, Gustavo Moriena, German Sciaini and R. J. Dwayne Miller, "Mapping molecular motions leading to charge delocalization with ultrabright electrons", Nature, 2013.
doi: 10.1038/nature12044


[About Research]
Ken Onda, Dr.
Researcher, Interactive Research Center of Science, Tokyo Institute of Technology, Japan

Shin-ya Koshihara, Dr.
Professor, Department of Chemistry and Materials Science, Tokyo Institute of Technology, Japan

German Sciaini,
Researcher, Department of Chemistry and Physics, University of Toronto, Canada and Max Planck Research Department for Structural Dynamics, Germany

[About Program]
Green Innovation Group, Department of Innovation Research, Japan Science and Technology Agency, Masashi Furukawa,


JST, an integrated organization of science and technology in Japan, establishes an infrastructure for the entire process from the creation of knowledge to the return to the society. For more information, visit http://www.jst.go.jp/EN/