2011 Fiscal Year Final Research Report
Nanofriction of 3He monolayer on superfluid 4He film
| Project/Area Number |
22651036
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Nanostructural science
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| Research Institution | Nagoya University |
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Principal Investigator |
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| Project Period (FY) |
2010 – 2011
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| Keywords | トライボロジー / 表面・界面物性 / ナノトライボロジー |
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| Research Abstract |
We studied a nanofriction of a^<3> He-^<4> He mixture film at ultra low temperatures. By a QCM experiment at 100 MHz with a planar gold substrate, we observed surprisingly that a part of^<3> He on an underlying^<4> He layer slips at around 0. 2 K by a pinning-depinning mechanism above v=35μm/s. To describe the mechanism, a possible scenario related to the superfluid transition of the 4He fluid layer is suggested.
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