Nanoscale Bubble Dynamics Induced by Damage of Graphene Liquid Cells
Nanoscale Bubble Dynamics Induced by Damage of Graphene Liquid Cells
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DOI：
10.1021/acsomega.0c01207
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发表时间：
2020-05
期刊：
影响因子：
4.1
通讯作者：
Sota Hirokawa;H. Teshima;P. Solís-Fernández;H. Ago;Yoko Tomo;Qinyi Li;Koji Takahashi
中科院分区：
文献类型：
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作者：
Sota Hirokawa;H. Teshima;P. Solís-Fernández;H. Ago;Yoko Tomo;Qinyi Li;Koji Takahashi
石墨烯液体池为液相透射电子显微镜提供了最高的空间分辨率。在这里，在石墨烯液体电池（GLC），我们研究了在石墨烯可控损伤诱导的气泡的纳米级动力学。损伤的程度取决于电子剂量率和细胞中气泡的存在。石墨烯被破坏后，空气从气泡中泄漏到水中。我们还观察到新气泡的意外定向成核，这超出了传统扩散理论的解释。我们将此归因于纳米级约束效应。这些发现为纳米级约束下的复杂流体现象提供了新的见解。
Graphene liquid cells provide the highest possible spatial resolution for liquid-phase transmission electron microscopy. Here, in graphene liquid cells (GLCs), we studied the nanoscale dynamics of bubbles induced by controllable damage in graphene. The extent of damage depended on the electron dose rate and the presence of bubbles in the cell. After graphene was damaged, air leaked from the bubbles into the water. We also observed the unexpected directional nucleation of new bubbles, which is beyond the explanation of conventional diffusion theory. We attributed this to the effect of nanoscale confinement. These findings provide new insights into complex fluid phenomena under nanoscale confinement.