纳米织构表面上观察到的接触线处的成核
Nucleation at the contact line observed on nano-textured surfaces
摘要：
已经证实，粗糙度在表面成核中起作用，即优先在液-气界面处开始冻结的趋势。使用高速成像，我们寻求证据冻结在催化剂基材上的接触线与强加的特征长度尺度（纹理）。长度尺度与临界核尺寸和$δ\sim τ/ σ$一致，其中$τ$是相关线张力，$σ$是表面张力，范围从纳米到微米。研究发现，纳米尺度织构使过冷水中的冰形核向三相接触线方向移动，而微米尺度织构则不会。
英文摘要：
It has been conjectured that roughness plays a role in surface nucleation, the tendency for freezing to begin preferentially at the liquid-gas interface. Using high speed imaging, we sought evidence for freezing at the contact line on catalyst substrates with imposed characteristic length scales (texture). Length scales consistent with the critical nucleus size and with $δ\sim τ/ σ$, where $τ$ is a relevant line tension and $σ$ is the surface tension, range from nanometers to micron. It is found that nano-scale texture causes a shift in the nucleation of ice in supercooled water to the three-phase contact line, while micro-scale texture does not.
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