Tunable narrowband thermal emitter for minimization of disease screening device
| Project/Area Number |
19J13668
|
|---|
| Research Category |
Grant-in-Aid for JSPS Fellows
|
| Allocation Type | Single-year Grants |
|---|
| Section | 国内 |
|---|
| Review Section |
Basic Section 21060:Electron device and electronic equipment-related
|
|---|
| Research Institution | The University of Tokyo |
|---|
Principal Investigator |
王 智宇 東京大学, 工学系研究科, 特別研究員(DC2)
|
|---|
| Project Period (FY) |
2019-04-25 – 2021-03-31
|
| Project Status |
Completed (Fiscal Year 2020)
|
| Budget Amount *help |
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 2020: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2019: ¥1,100,000 (Direct Cost: ¥1,100,000)
|
|---|
| Keywords | High-Q thermal emission / thermal emission / ultra-narrow bandwidth / tunable wavelength / mid-infrared |
|---|
| Outline of Research at the Start |
申請者が提案したTP-cavity構造は100以上のQ値をシミュレーション上で実現した．既存のデバイスでは検出できないバイオ分子の特性吸収帯を検出できるようになる．さらに，このTP-cavity構造の放射波長はcavityの光学的膜厚に依存している．したがって，cavityの材料を電気光学効果のあるEOポリマーに置き換えることで，AuとGe層にかけた電圧によって，cavityの光学的膜厚をコントロールすると伴に，放射波長のコントロールも実現できるようになる．
|
| Outline of Annual Research Achievements |
Within this year, we have conducted the optimization, simulation, fabrication, and experiment processes. First, we optimized the structure by adjusting the DBR layer number and the DBR material, for a fully developed optical Tamm state sustained within the structure. As a result, through simulation, we demonstrated a pronounced resonance peak in emittance spectrum with a quality factor (Q-factor) as large as 1908 . Ge was used, not only as a material of the DBR, but also for wavelength tunability taking advantage of its thermo-optic effect. The temperature sensitive Ge layer was designed at the position sustaining the maximum electric field, in order to make the index change in Ge maximally influence the optical behavior of the whole structure. Then, the device has been fabricated using RF sputtering. To reduce its internal stress, we also annealed the sample after deposition. The emittance measurement was carried out at temperatures up to 150 C. Upon heating, sharp peak is observed in the emittance spectrum with a large Q-factor around 780.
|
| Research Progress Status |
令和2年度が最終年度であるため、記入しない。
|
| Strategy for Future Research Activity |
令和2年度が最終年度であるため、記入しない。
|
Report
(2 results)
Research Products
(3 results)
