2021 Fiscal Year Final Research Report
Ultra-high resolution near-field optical microscopy using force detection and mechanism of atomic resolution observation of organic molecules
| Project/Area Number |
20K21128
|
|---|
| Research Category |
Grant-in-Aid for Challenging Research (Exploratory)
|
| Allocation Type | Multi-year Fund |
|---|
| Review Section |
Medium-sized Section 28:Nano/micro science and related fields
|
|---|
| Research Institution | Osaka University |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2020-07-30 – 2022-03-31
|
| Keywords | 近接場光学顕微鏡 |
|---|
| Outline of Final Research Achievements |
We theoretically and experimentally investigated the factors limiting the high-resolution measurement of evanescent light, and determined the conditions for high-resolution measurement of evanescent light as force. In order to measure evanescent light as a force with high sensitivity and resolution, various components of the near-field optical microscope were made low-noise. Furthermore, as the sample surface, we used bilayers of pentacene molecules adsorbed on a silver surface, which is easily obtained as an atomically clean and flat surface, and successfully observed the distribution of the evanescent light with nanometer spatial resolution.
|
| Free Research Field |
走査型プローブ顕微鏡
|
| Academic Significance and Societal Importance of the Research Achievements |
原子レベルでの物質と光との相互作用に関する科学は、学術的研究課題の宝庫である。本研究の成功により、従来の常識を覆す新しい物理現象や機能を発見できる可能性が高い。このような発見は、新しい概念に基づく新材料や新デバイスの創製につながると期待される。その結果、光触媒に対しては、反応機構の解明と高効率化・高機能化が実現されると期待される。また太陽電池に対しては、色素増感効果の詳細が解明され、それを利用した高効率太陽電池の開発が期待される。さらに、このような革新的な研究手法の出現は、光物性研究の仕方を質的に変える可能性がある。
|
