2016 Fiscal Year Final Research Report
fundamental research for observation of organic molecular crystal with atomic resolution using scanning transmission electron microscopy
| Project/Area Number |
26600084
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Crystal engineering
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 高分解能電子顕微鏡法 / STEM / 有機結晶 |
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| Outline of Final Research Achievements |
In this research, we focused on fundamental research for observation of organic molecular crystal with atomic resolution using Annular Dark-Field (ADF) Scanning Transmission Electron Microscopy(STEM). In general, organic molecular crystal has characteristic structure compare with inorganic crystal. For example, large unit cell size and large thermal factor. We focus on these points and investigate the difference in ADF-STEM image related to such effects using experimental and simulated images. In particular, we mainly investigated dependence of detection angle on Annular Dark-Field (ADF)-STEM atomic image contrast for organic and inorganic crystal. As a result, contrary to expectations, such differences do not mainly affect the coherency and angle dependence of ADF-STEM image contrast. And it was found that only angle dependence of atomic scattering factor for electron simply affects the angle dependence of ADF image.
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| Free Research Field |
高分解能電子顕微鏡法
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