2019 Fiscal Year Research-status Report
| Project/Area Number |
18K14119
|
|---|
| Research Institution | National Institute of Advanced Industrial Science and Technology |
|---|
Principal Investigator |
Lin YungChang 国立研究開発法人産業技術総合研究所, 材料・化学領域, 研究員 (90772244)
|
|---|
| Project Period (FY) |
2018-04-01 – 2021-03-31
|
| Keywords | 電子顕微鏡 / 電子エネルギー損失分光 / 二次元材料 / 遷移金属ドーパント / 単原子スピン状態 / 単原子解析 |
|---|
| Outline of Annual Research Achievements |
In this fiscal year, we have designed the fork type apertures to be placed at the condenser aperture plane to realize the separation of electron vortex beam with different angular momentum. We have discussed with several professional companies and research groups about how to make this aperture by using focused ion beam technology. We tested the design and the fabrication of the fork type aperture which has many details to be paid attention to. In the meanwhile, we have studied on 2D materials and published 1 book chapter and 7 papers including Adv. Funct. Mater., ACS Nano, Nanoscale, Chem. Mater., and ACS Appl. Mater. Interfaces.
|
| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
In order to select the vortex beam with different angular momentum, we need to modify the condense lens design in the electron microscope. We have discussed the modification with the electron microscopy developing engineers and which will be proceeded in the next fiscal year.
|
| Strategy for Future Research Activity |
We will spend the rest of the budget to the modification of condenser lens (CL) system by adding an additional aperture to the pre corrector lens plane for the purpose of selecting the vortex beam with different angular momentum. With the new setup of CL system and the fork type aperture, we will be able to perform single atom electron magnetic circular dichroism (EMCD) by using the vortex beam. We will focus on developing this vortex beam technique to study on low-dimensional materials. We plan to study the EMCD of single transition metal atoms embedded in 2D materials and investigate the magnetic moment of the metal atom under different bonding configurations.
|
| Causes of Carryover |
The budget will be used for the modification of condenser lens system in the next fiscal year.
|
