| Budget Amount *help |
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2020: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2019: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
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| Outline of Final Research Achievements |
Physical properties specific to nanodiamond (ND) films were investigated and the following results were obtained. (1) Hardness of 85 GPa was achieved by applying a negative voltage. (2) We applied near-field Raman spectroscopy to ND films for the first time and demonstrated that Raman scattering light from ND crystal grains can be detected. (3) The conductive ND film was applied to n-type single crystal diamond, and it was demonstrated that the contact resistance was about one order of magnitude smaller than that of conventional Ti-based electrodes and that the interfacial potential was clearly lowered. (4) The acid corrosion resistance was examined by immersing the ND film in boiling mixed acid; while the Ti-based electrode peeled off immediately after the first session, the ND film remained below the initial contact resistance of the Ti-based electrode for 300 hours, demonstrating that the ND film has extremely high acid corrosion resistance.
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