Stability, Dynamics, and Tolerance to Undersaturation of Surface Nanobubbles.
Stability, Dynamics, and Tolerance to Undersaturation of Surface Nanobubbles.
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DOI：
10.1103/physrevlett.122.134502
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发表时间：
2019-04
影响因子：
8.6
通讯作者：
Beng Hau Tan;Hongjie An;C. Ohl
中科院分区：
文献类型：
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作者：
Beng Hau Tan;Hongjie An;C. Ohl
表面纳米气泡-浸没衬底上的纳米级气体域-的理论理解围绕着两个对比的观点。一种观点认为纳米气泡附近的气体传输解释了许多与稳定性相关的性质，但系统地低估了动态响应的时间尺度。另一种观点认为，气体运输的散装液体与外部环境平衡，恢复实验观察到的动态时间尺度，但错误地预测，纳米气泡逐渐缩小，直到溶解。我们提出了一个模型，耦合这两个角度，这是能够解释的稳定性，动态，和意想不到的容忍表面纳米气泡欠饱和环境。
The theoretical understanding of surface nanobubbles-nanoscale gaseous domains on immersed substrates-revolves around two contrasting perspectives. One perspective, which considers gas transport in the nanobubbles' vicinity, explains numerous stability-related properties but systematically underestimates the dynamical response timescale by orders of magnitude. The other perspective, which considers gas transport as the bulk liquid equilibrates with the external environment, recovers the experimentally observed dynamical timescale but incorrectly predicts that nanobubbles progressively shrink until dissolution. We propose a model that couples both perspectives, which is capable of explaining the stability, dynamics, and unexpected tolerance of surface nanobubbles to undersaturated environments.