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Evaporation-Induced Cavitation in Nanofluidic Channels: Dynamics and Origin

机译:纳米流体通道中蒸发诱导的空化:动力学和起源

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In this chapter, we report a new mode of heterogeneous cavitation, i.e. evaporation-induced cavitation in water-filled hydrophilic nanochannels under enormous negative pressures. The liquid menisci in nanochannels are observed to be pinned at the entrance while vapor bubbles form and expand inside during the evaporation. It is observed that the growth rate of the vapor bubbles is controlled by water evaporation at the channel entrance, which is actually significantly enhanced due to absence of vapor diffusion along the nanochannel. We also report previously unexplored bubble nucleation, growth, stability, translational symmetry and dynamics that seem to be unique at the nanoscale.
机译:在本章中,我们报告了一种新型的非均相空化模式,即在充满水的亲水性纳米通道中在巨大负压下蒸发诱导的空化。观察到纳米通道中的液体弯液面被固定在入口处,而在蒸发过程中蒸气气泡形成并在内部膨胀。观察到,气泡的生长速率由通道入口处的水蒸发来控制,由于没有蒸汽沿纳米通道扩散,该气泡的增长实际上得到了增强。我们还报告了以前未开发的气泡成核,生长,稳定性,平移对称性和动力学,这些在纳米级似乎是独一无二的。

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