[1] Wuhan Univ, Sch Printing & Packaging, Wuhan 430072, Hubei, Peoples R China
[2] Wuhan Univ, Sch Phys & Technol, Wuhan 430072, Hubei, Peoples R China
[3] Zhengzhou Univ, Coll Mat Sci & Engn, Zhengzhou 450052, Henan, Peoples R China
[4] Wuhan Univ, Suzhou Res Inst, Suzhou 215000, Peoples R China