水的玻璃化转变的研究  

INVESTIGATION OF WATER GLASS TRANSITION

作　　者：张晋鲁[1] 袁颖憨[2] 周恒为[1] 应学农[2] 黄以能[1] 

机构地区：[1]伊犁师范学院物理与电子信息学院凝聚态物理与材料设计研究所,伊宁835000 [2]南京大学物理系固体微结构实验室,南京210093

出　　处：《物理学进展》2006年第3期449-451,共3页Progress In Physics

基　　金：国家自然科学基金(10274028);伊犁师范学院重点基金资助

摘　　要：本文用我们液态低频力学谱方法对玻璃化转变研究领域中一个持续半个多世纪、十分令人困扰的热点水的玻璃化转变问题进行了研究。用表征玻璃化转变最直接的参量力学模量,首次实现对水的玻璃化转变过程的明确表征,得出水的玻璃化转变温度是163K,而不是长期一直认为的136K。另外,水的玻璃化转变表现出不同于传统玻璃化转变的反常耗散行为。研究还表明,水的玻璃化转变温度表现出重要的同位素效应,这是水的玻璃化转变奇异特征的一个反映,也是在玻璃化转变研究中首次观测到同位素效应。Water glass transition, as a hotspot of the glass transition field that lasts out and puzzles scientists more than half of a century, is investigated by the liquid low-frequency mechanical spectrum method recently invented by us in this paper. By the modulus that is most direct quantity indicating the glass transition phenomenon, the water glass transition was indicated for the first time. Itwas obtained that the water glass transition temperature is about 163K, rather than the long time accepted 136K. Moreover, the water glass transition shows an anomalous dissipation behavior that is quite different to the traditional one. The investigation also indicated that the water glass transition temperature has the isotopic effect just as a reflection of its fantastic characteristics and an enlightening field. phenomenon discovered for the first time in glass transition

关 键 词：水的玻璃化转变 液态低频力学谱 同位素效应 

分 类 号：O482[理学—固体物理]