Development of high-ZT single-molecule thermoelectric devices
| Project/Area Number |
15H03543
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Nano/Microsystems
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| Research Institution | Osaka University |
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Principal Investigator |
Tsutsui Makusu 大阪大学, 産業科学研究所, 准教授 (50546596)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2017: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2016: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2015: ¥10,010,000 (Direct Cost: ¥7,700,000、Indirect Cost: ¥2,310,000)
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| Keywords | 分子エレクトロニクス / 熱電 / 単分子科学 / ナノコンタクト / 量子効果 / マイクロ・ナノデバイス / 量子閉じ込め / エネルギー全般 / ナノマイクロセンサー |
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| Outline of Final Research Achievements |
This research aimed to create single-molecule junctions with high thermoelectric performance. For this, a novel nanosensor was developed to measure the single-moelcule thermoelectric properties, which consisted of a microheater, micro-thermocouple, and Au nanobridge. The device was implemented to first evaluate heat dissipation in current-carrying Au ballistic nanocontact, wherein it was found that the local heating was bias-polarity-dependent due to the intimate contributions of the Peltier effects in the electron-hole asymmetric nanosystem. The technique was also exploited to characterize the role of metal-molecule contact structure on the thermoelectric performance, which led to findings that elongated Au-thiol bonds provide electronic structure useful for enhancing the single-molecule power factor. Finally, it led to a new method to measure single-molecule thermal conductance at room temperature in vacuum.
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Report
(4 results)
Research Products
(11 results)
