| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Outline of Final Research Achievements |
We demonstrated the successful wulff polyhedral formation of direct dehydrated DNA-guided nanoparticle single crystals.
DNA-functionalized nanoparticlew were crystallized through slowly cooling from 65 C to 25 C. The crystal structure of assembled DNA-NP superlattices were analyzed by SAXS before and after dehydrations. Dried samples were also imaged by SEM and TEM. The perfect forming conditions after dehydration were adjusted by changing volume fraction of nanoparticles per unit in solution. We finally confirmed wulff polyhedral formation of DNA-NP superlattices at higher volume fractions. We have succeeded, for the first time, in the structure analysis of direct dehydrated DNA-NP superlattices. We also confirmed the surface fusion of nearest-neighboring nanoparticles in a DNA-NP superlattice by electron beam irradiation. The technique has great potential as assembling method of precursor of phononic crystals.
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