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Journal Article

Plasmonic bubble nucleation and growth in water: Effect of dissolved air


Lohse,  Detlef
Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Li, X., Wang, Y., Zaytsev, M. E., Lajoinie, G., The, H. L., Bomer, J. G., et al. (2019). Plasmonic bubble nucleation and growth in water: Effect of dissolved air. The Journal of Physical Chemistry C, 123(38), 23586-23593. doi:10.1021/acs.jpcc.9b05374.

Cite as: http://hdl.handle.net/21.11116/0000-0005-17DD-9
Under continuous laser irradiation, noble metal nanoparticles immersed in water can quickly heat up, leading to the nucleation of so-called plasmonic bubbles. In this work, we want to further understand the bubble nucleation and growth mechanism. In particular, we quantitatively study the effect of the amount of dissolved air on the bubble nucleation and growth dynamics, both for the initial giant bubble, which forms shortly after switching on the laser and is mainly composed of vapor, and for the final life phase of the bubble, during which it mainly contains air expelled from water. We found that the bubble nucleation temperature depends on the gas concentration: the higher the gas concentration, the lower the bubble nucleation temperature. Also, the long-term diffusion-dominated bubble growth is governed by the gas concentration. The radius of the bubbles grows as R(t) proportional to t(1/3) for air-equilibrated and air-oversaturated water. In contrast, in partially degassed water, the growth is much slower since, even for the highest temperature we achieve, the water remains undersaturated.