根据经典热力学理论,在水中纳米级的气泡难以长期稳定存在。近年来却有大量的实验结果
表明固液界面存在纳米气泡,原子力显微镜也直接观察到了纳米气泡。有关纳米气泡的研究具有巨大的理
论和实际意义,它对表面科学、流体动力学、生物科学以及一些应用领域都有深远的影响。
纳米气泡会引起
流体在界面的滑移,减少流动阻力,并与表面粘附、胶体分散、矿石浮选、废渣处理等方面密切相关。
Bubbles at nanometer scale could not exist stably according to classic theories. A lot of recent experi2
mental results , however , have proven that there are nanobubbles at solidPwater interface. The images of atomic force mi2
croscopy (AFM) in liquids revealed nanobubbles adsorbed on solid surfaces and provided the direct evidence for their ex2
istence. The presence of nanobubbles at the solidP liquid interface may be related to some important interfacial phenome2
na , for example the hydrophobic attraction and the slippage of simple fluids near a wall . So it has profound meanings in
surface science , hydrodynamics , biology and many application fields. At present the study of nanobubbles is on the ini2
tial stage and researchers have paid enough attention to its influence. In this article the indirect and direct evidence for
the presence of nanobubbles and the basic properties of nanobubbles , including its formation mechanism , morphography
and distribution , are reviewed. And the influence of nanobubbles on the long2rang hydrophobic interaction , fluid slippage
and some biological problems is discussed.
Zhang X, Zhu Y, Granick S. Science , 2002 , 295 : 663 —666
张雪花, 胡 钧, 固液界面纳米气泡的研究进展,化 学 进 展,2004,
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楼主留言：
当只有液体流动时，阻力较大，流速较小；若在液固界面上有了一层纳米气泡，液体不再与固体接触，流动的阻力会减小，流速会加快，看上去好像是液体在固体表面产生了滑移，其实没有，液气之间没有滑移，气固之间也没有滑移，只是液体的流速加快了而已。
