| Project/Area Number |
16K13719
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
General applied physics
|
|---|
| Research Institution | Osaka University |
|---|
Principal Investigator |
Ogi Hirotsugu 大阪大学, 大学院工学研究科, 教授 (90252626)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
中村 暢伴 大阪大学, 基礎工学研究科, 助教 (50452404)
石田 秀士 大阪大学, 基礎工学研究科, 助教 (80283737)
|
|---|
| Project Period (FY) |
2016-04-01 – 2018-03-31
|
| Project Status |
Completed (Fiscal Year 2017)
|
| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2017: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
|
|---|
| Keywords | 熱モード / 熱伝導率 / 固有値問題 / レーザー計測 / 共振 / 固有値 / 固有ベクトル / 物性実験 / 超精密計測 / 物性理論 |
|---|
| Outline of Final Research Achievements |
Heat conduction possesses (thermal) modes in analogy with acoustics even without oscillation. Here, we establish thermal-mode spectroscopy to measure thermal diffusivity of small specimens. Local heating with a light pulse excites such modes that show antinodes at the heating point, and photothermal detection at another antinode spot allows measuring relaxation behavior of the desired mode selectively: The relaxation time yields thermal diffusivity. The Ritz method is proposed for arbitrary geometry specimens. This method is applicable even to a diamond crystal with mm dimensions.
|
