论文标题
在没有人土地上的水的电子衍射
Electron Diffraction of Water in No Man's Land
论文作者
论文摘要
只有在有可能系统地表征深度冷的状态中的水（从那里似乎散发出的地方）中，才能将水的异常特性得到一个普遍接受的理解。这在很大程度上仍然难以捉摸，因为水在160 K和232 K之间迅速结晶。在这里，我们提出了一种实验方法，可以在定义明确的温度下快速制备深层冷水，并在结晶发生之前用电子衍射探测。我们表明，当水从室温到低温温度冷却时，其结构会顺利演变，接近低于200 K的无定形冰。我们的实验范围缩小了水异常的原始解释范围，并开辟了用于研究超冷水的新途径。
A generally accepted understanding of the anomalous properties of water will only emerge if it becomes possible to systematically characterize water in the deeply supercooled regime, from where the anomalies appear to emanate. This has largely remained elusive because water crystallizes rapidly between 160 K and 232 K. Here, we present an experimental approach to rapidly prepare deeply supercooled water at a well-defined temperature and probe it with electron diffraction before crystallization occurs. We show that as water is cooled from room temperature to cryogenic temperature, its structure evolves smoothly, approaching that of amorphous ice just below 200 K. Our experiments narrow down the range of possible explanations of the origin for the water anomalies and open up new avenues for studying supercooled water.
