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There is interest in developing sustainable materials displaying circularly polarized room-temperature phosphorescence, which have been scarcely reported. Here, we introduce biobased thin films exhibiting circularly polarized luminescence with simultaneous room-temperature phosphorescence. For this purpose, phosphorescence-active lignosulfonate biomolecules are co-assembled with cellulose nanocrystals in a chiral construct. The lignosulfonate is shown to capture the chirality generated by cellulose nanocrystals within the films, emitting circularly polarized phosphorescence with a 0.21 dissymmetry factor and 103 ms phosphorescence lifetime. By contrast with most organic phosphorescence materials, this chiral-phosphorescent system possesses phosphorescence stability, with no significant recession under extreme chemical environments. Meanwhile, the luminescent films resist water and humid environments but are fully biodegradable (16 days) in soil conditions. The introduced bio-based, environmentally-friendly circularly polarized phosphorescence system is expected to open many opportunities, as demonstrated here for information processing and anti-counterfeiting. [ABSTRACT FROM AUTHOR]

Oxide dispersion strengthened (ODS) steel is expected as high-performance structural components under heavy irradiations with neutrons at relatively high temperature in fusion reactors and advanced next generation fission reactors, like fast breeder reactors. In particular, the 12Cr ferritic ODS steel is regarded as one of the candidate structural materials for the reactors. In this study, mechanical properties of the alloy will be tested at different temperatures, and the effects of the microstructure will be investigated. Especially we will focus on the microstructural which is principally induced by the fabrication process of ODS steels. Fracture surface analysis at room temperature will be performed to clarify the fracture mechanism of this material. [ABSTRACT FROM AUTHOR]