| 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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| 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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