Research and Education Center for Natural Sciences and Department of Physics, Hiyoshi, Keio University, Yokohama 223-8521, Japan.
Phys Rev E. 2019 Jan;99(1-1):010801. doi: 10.1103/PhysRevE.99.010801.
Water is ubiquitous, and the surface properties of ice have been studied for some time, due to their importance. A liquidlike layer (LLL) is known to exist on ice, below the melting point. We use surface thermal fluctuation spectroscopy to study the LLL, including its thickness, for pure ice, and for ice with impurities. We find that the properties of the LLL are experimentally those of liquid water, with thickness much smaller than previous results. We also find that impurities cause the LLL to be thicker, and quite inhomogeneous, with properties depending on the dopant.
水无处不在，由于其重要性，冰的表面性质已经研究了一段时间。众所周知，在冰点以下的冰表面存在一个类似液态的层（LLL）。我们使用表面热涨落光谱法来研究包括其厚度在内的纯冰和掺有杂质的冰的 LLL。我们发现，LLL 的性质在实验上与液态水相同，其厚度远小于先前的结果。我们还发现，杂质会使 LLL 变厚，并且相当不均匀，其性质取决于掺杂剂。
