Direct measurement of the surface dynamics of supercooled liquid-glycerol by optical scanning a film  

作　　者：张芳 张国峰 董双丽 孙建虎 陈瑞云 肖连团 贾锁堂 

机构地区：[1]State Key Laboratory of Quantum Optics and Quantum Optics Devices,College of Physics and Electronics Engineering,Shanxi University

出　　处：《Chinese Physics B》2009年第9期3918-3921,共4页中国物理B（英文版）

基　　金：supported by the Natural Science Foundation of China (Grant No 10674086);973 Program of China (Grant Nos 2006CB921603,2006CB921102 and 2008CB317103);863 Program of China (Grant No 2009AA01Z319);NCET-06-0259;the Shanxi Provincial Foundation for Leaders of Disciplines in Science;the Natural Science Foundation of Shanxi province,China (Grant No 2007011006);Shanxi Province Foundation for Returned scholars of China

摘　　要：The surface dynamics of supercooled liquid-glycerol is studied by scanning the thickness of the glycerol film with single photon detection. Measurements are performed at room temperature well above the glyeerol＇s glass transition temperature. It is shown that the surface dynamics of the glycerol film is very sensitive to the temperature. The linear relationship between the thickness of the film and the viscosity predicted by the Vogel Pulcher-Tammann Hesse （VFTH） law is also presented experimentally.The surface dynamics of supercooled liquid-glycerol is studied by scanning the thickness of the glycerol film with single photon detection. Measurements are performed at room temperature well above the glyeerol＇s glass transition temperature. It is shown that the surface dynamics of the glycerol film is very sensitive to the temperature. The linear relationship between the thickness of the film and the viscosity predicted by the Vogel Pulcher-Tammann Hesse （VFTH） law is also presented experimentally.

关 键 词：supercooled liquids surface dynamics VISCOSITY single photon detection 

分 类 号：O485[理学—固体物理]