水在不同条件下的相变和奇异相变  

Normal and Novel Phase Transitions in Water

作　　者：帕尔哈提.苏比 郭秀珍[1] 张丽丽[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,新疆伊宁835000

出　　处：《伊犁师范学院学报（自然科学版）》2008年第2期23-26,共4页Journal of Yili Normal University：Natural Science Edition

基　　金：国家自然科学基金(10274028;10774064);新疆自治区教育厅重点基金(XJUEDU2007137);新疆自治区科技厅重点基金(200721104);伊犁师范学院重点基金(2006.1-2008.12;2007.1-2009.12)资助的课题的支持

摘　　要：讨论了水在正常情况下的相变,并且利用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切变模量,首次实现了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.In this paper,the phase transitions of water were discussed. Moreover,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 shear modulus that is most direct quantity indicating the glass transition phenomenon,the water glass transition was indicated for the first time. It was obtained that the temperature of glass transition in water water 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.

关 键 词：水 相变 玻璃化转变 液态低频力学谱 

分 类 号：O414.13[理学—理论物理]