Development of simultaneous atomic-scale AFM/STM measurement in liquid environment
| Project/Area Number |
18K19052
|
|---|
| Research Category |
Grant-in-Aid for Challenging Research (Exploratory)
|
| Allocation Type | Multi-year Fund |
|---|
| Review Section |
Medium-sized Section 32:Physical chemistry, functional solid state chemistry, and related fields
|
|---|
| Research Institution | The University of Shiga Prefecture (2021-2022)
Saitama University (2018-2020) |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2018-06-29 – 2023-03-31
|
| Project Status |
Completed (Fiscal Year 2022)
|
| Budget Amount *help |
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2018: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
|
|---|
| Keywords | 原子間力顕微鏡 / トンネル顕微鏡 / 同時計測 / 固液界面 / 走査型トンネル顕微鏡 |
|---|
| Outline of Final Research Achievements |
We have developed a probe for simultaneous measurement of atomic force microscopy (AFM) and scanning tunneling microscopy (STM) in liquid environments. The probe, which is based on the qPlus sensor, is equipped with an insulated conductive tip. Owing to its electrical insulation except for the tip apex, the developed sensor enabled simultaneous detection of a tip-sample interaction force and tunneling current, suppressing the Faradaic leakage current. As a fundamental demonstration, we performed simultaneous AFM/STM imaging in an electrolyte solution by using the developed sensor.
|
| Academic Significance and Societal Importance of the Research Achievements |
本研究で開発された液中AFM/STM計測技術は、今後、空間分解能が原子・分子レベルにまで改善され、３次元空間分布計測にまで拡張されると予想される。これにより、電極・電解液界面で起こる化学反応プロセスを、複合的な観点から議論することが可能になり、AFM、STM単独で測定するより、相乗的に進展すると期待される。また、AFM/STM同時計測を用いることで、AFM（相互作用力）で探針－試料間距離を制御しながらトンネル電流を検出できるため、導電性の低い材料に対しても、単独でのSTM測定より安定した高分解能イメージングが期待できる。
|
Report
(6 results)
Research Products
(17 results)
