Borkent Bram M, Dammer Stephan M, Schönherr Holger, Vancso G Julius, Lohse Detlef
Physics of Fluids, Faculty of Science and Technology and J. M. Burgers Centre for Fluid Dynamics, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands.
Phys Rev Lett. 2007 May 18;98(20):204502. doi: 10.1103/PhysRevLett.98.204502. Epub 2007 May 16.
Shock wave induced cavitation experiments and atomic force microscopy measurements of flat polyamide and hydrophobized silicon surfaces immersed in water are performed. It is shown that surface nanobubbles, present on these surfaces, do not act as nucleation sites for cavitation bubbles, in contrast to the expectation. This implies that surface nanobubbles are not just stable under ambient conditions but also under enormous reduction of the liquid pressure down to -6 MPa. We denote this feature as superstability.
进行了冲击波诱导空化实验以及对浸入水中的扁平聚酰胺和疏水化硅表面的原子力显微镜测量。结果表明,与预期相反,这些表面上存在的表面纳米气泡并未充当空化气泡的成核位点。这意味着表面纳米气泡不仅在环境条件下稳定,而且在液体压力大幅降低至-6 MPa时也稳定。我们将此特性称为超稳定性。