Visual encryption, manipulation of terahertz waves and the improved surface-treatment of GaN crystals were all topics of discussion at this year's JSAP meeting in Toyama, Japan.
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Horiuchi, N. Spotlight on Japanese science. Nature Photon 3, 615–616 (2009). https://doi.org/10.1038/nphoton.2009.201
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DOI: https://doi.org/10.1038/nphoton.2009.201