Search for Laws of Dynamic Nano-Friction as Guiding Principles to Design Artificial Materials for NEMS
| Project/Area Number |
15K13419
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Computational science
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| Research Institution | Kanazawa Institute of Technology |
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Principal Investigator |
HAYASHI Keiji 金沢工業大学, 工学部, 教授 (30281455)
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2016: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2015: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
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| Keywords | コンピュータ物理 / メゾスコピック系 / ナノトライボロジー / ナノマシン / 表面・界面物性 / 複雑系 / 計算物理 / トライボロジー |
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| Outline of Final Research Achievements |
Laws of dynamic nano-friction (i.e., continuous wearless friction) accompanying steady sliding motion between crystal lattices constituting a nano-electromechanical system (NEMS) were searched for under steady spatial distributions of the local quasi-temperature, by molecular dynamics (MD) simulations. The temperature control of the non-conservative model was carried out by extending the isothermal MD method using thermostats. A threshold phenomenon was predicted as a common feature characterizing dependence of the wearless-frictional resistance on the sliding velocity. A simple relationship was found between the threshold sliding velocity and the lattice-constant ratio. A further insight into the heat-generation dynamics was provided by the analysis of the forced vibration of the crystal lattices caused by the sliding motion. These results suggested an atomistic mechanism of energy dissipation underlying the threshold characteristics.
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Report
(3 results)
Research Products
(16 results)
