科研之友
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摘要
Here we report the direct dynamic observation of electron beam induced nucleation of nanometer-diameter voids in a thin water film (%26lt;12 nm) on a hydrophilic substrate using an in situ TEM platform tailored towards imaging of liquids. The growth dynamics of these nano-voids in a thin water film reveal that there is a critical diameter below which voids are unstable and close up. However, the coalescence of several of such small and unstable voids allows for pathway to form larger and stable voids. A simple model based on the minimization of free energy explains our experimental observations.
- 出版日期2012
- 单位南阳理工学院
