| Budget Amount *help |
¥3,380,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥180,000)
Fiscal Year 2011: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2010: ¥2,600,000 (Direct Cost: ¥2,600,000)
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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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