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Tsukuba, Japan - Ceramic materials that are resistant to cracking are used in a variety of industries from aerospace engineering to dentistry. Toughening them to improve their efficiency and safety is therefore an important area of investigation. Researchers from the University of Tsukuba have used time-resolved X-ray diffraction to observe transformation toughening in zirconia ceramics during dynamic fracture. Their findings are published in
Applied Physics Letters.
Current methods of observation allow the formation of cracks in materials to be observed in situ while loads are applied. These close-up analyses can capture changes on a very small scale with fast resolution, providing clear pictures of fractures and of how the material resists them through toughening.
Researchers from the University of Tsukuba synthesized microparticles that exhibit complex fluorescence that has not been previously characterized on a supramolecular level. This fluorescence is attributable to the anisotropic helical arrangement of the polymer chains that comprise the microparticles. Liquid-crystal displays, artificial photosynthesis technologies, and other applications will benefit from the molecular-scale insight provided by these findings.
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