| Budget Amount *help |
¥16,640,000 (Direct Cost: ¥12,800,000、Indirect Cost: ¥3,840,000)
Fiscal Year 2018: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2017: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2016: ¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000)
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| Outline of Final Research Achievements |
We recently developed frequency-modulation atomic force microscopy (FM-AFM) in liquids and made it possible to explore solid-liquid interface properties such as the hydration structures and surface charges with a nanometer-scale resolution by two-dimensional (2D) and three-dimensional (3D) force mapping techniques. In this project, we optimized the force mapping procedures to make the hydration measurements more reliable and reproducible. We employed FM-AFM to study the relationship between the local hydration structures and fine surface structures on alkali halide crystals, clay minerals, and molecular surfaces such as self-assembled monolayers and two-dimensional protein crystals. The measured local surface structures were compared with the water density distributions predicted by molecular dynamics (MD) simulations.
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