| Budget Amount *help |
¥16,120,000 (Direct Cost: ¥12,400,000、Indirect Cost: ¥3,720,000)
Fiscal Year 2016: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2015: ¥8,840,000 (Direct Cost: ¥6,800,000、Indirect Cost: ¥2,040,000)
Fiscal Year 2014: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
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| Outline of Final Research Achievements |
In this study, we tried to directly observe electric field structures at ceramic interfaces by atomic-resolution differential phase contrast scanning transmission electron microscopy (DPC STEM) to understand the fundamental mechanisms of interface properties in polar ceramic materials. First, we developed theory and experimental setups for quantitative DPC STEM. Then, we applied this new technique to various applications. We obtained the following main results. 1. We could directly observe local electric field variation at polar crystal interfaces related to their local potential structures. 2. We could directly observe pn junction in semiconductor materials in real space as an electric field variation. 3. We could observe atomic electric field within gold single atoms.
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