Freezing transition of interfacial water at room temperature under electric fields

被引:97
作者
Choi, EM [1 ]
Yoon, YH [1 ]
Lee, S [1 ]
Kang, H [1 ]
机构
[1] Seoul Natl Univ, Dept Chem, Seoul 151747, South Korea
关键词
D O I
10.1103/PhysRevLett.95.085701
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The freezing of liquid water into ice was studied inside a gap of nanometer spacing under the control of electric fields and gap distance. The interfacial water underwent a sudden, reversible phase transition to ice in electric fields of 10(6) V m(-1) at room temperature. The critical field strength for the freezing transition was much weaker than that theoretically predicted for alignment of water dipoles and crystallization into polar cubic ice (> 10(9) V m(-1)). This new type of freezing mechanism, occurring in weak electric fields and at room temperature, may have immediate implications for ice formation in diverse natural environments.
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页数:4
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