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2017.05.09

【Awards and Commendations】Koki Sano, Department of Chemistry and Biotechnology, wins a distinguished oral presenters at The 97th CSJ Annual Meeting.

On 19th March 2017, Koki Sano, Department of Chemistry and Biotechnology, wins a distinguished oral presenters at The 97th CSJ Annual Meeting 

In nature, certain fish, such as neon tetra and blue damselfish, exhibit beautiful colors and change their colors in response to external stimuli. These colors are called structural colors, which is derived from large periodicity composed of cofacially aligned plates of guanine crystal. By controlling this ordered nanostructure, the fish modulate their structural color. Here, we aimed to construct such a dynamic nanostructure by using an aqueous dispersion of inorganic nanosheets. We focused on the electrostatic repulsion between nanosheets and realized to drastically enhance the electrostatic repulsion by deionization. Therefore, nanosheets self-assemble to form a long-range ordered nanostructure with extralarge periodicity up to 675 nm in aqueous media. Owing to their fluidic nature, we can easily modulate their structural color in response to external stimuli, such as heating or magnetic field. Additionally, we found an unprecedented spatiotemporal pattern formation of magnetically aligned titanate nanosheets after removal of magnetic fields.

 

I’m very honored to receive this award. I would like to thank Prof. Takuzo Aida and lab members. I also would like to study harder for making further achievements.