[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
[2] Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China
[3] Hong Kong Polytech Univ, Inst Text & Clothing, Hong Kong 649490, Hong Kong, Peoples R China