Physics of Fluids - Publications

Giant and explosive plasmonic bubbles by delayed nucleation

arΧiv
Proceedings of the National Academy of Sciences 201805912, 1–6 (2018)

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BibTeΧ

@article {Wang201805912,
	author = {Wang, Yuliang and Zaytsev, Mikhail E. and Lajoinie, Guillaume and The, Hai Le and Eijkel, Jan C. T. and van den Berg, Albert and Versluis, Michel and Weckhuysen, Bert M. and Zhang, Xuehua and Zandvliet, Harold J. W. and Lohse, Detlef},
	title = {Giant and explosive plasmonic bubbles by delayed nucleation},
	year = {2018},
	doi = {10.1073/pnas.1805912115},
	publisher = {National Academy of Sciences},
	abstract = {Plasmonic microbubbles are at the center of numerous applications, including micromanipulation/nanomanipulation, biomedical diagnosis and therapy, and solar energy harvesting. Controlling the dynamics of these microbubbles is key to successfully exploiting their potential in the growing number of applications. Literature has vastly overlooked the nucleation and early microsecond dynamics by which these microbubbles arise. It is of utmost importance to understand this early phase, as it displays the most violent dynamics and is the precursor and origin of all subsequent dynamics, on which the many applications rely.When illuminated by a laser, plasmonic nanoparticles immersed in water can very quickly and strongly heat up, leading to the nucleation of so-called plasmonic vapor bubbles. While the long-time behavior of such bubbles has been well-studied, here, using ultrahigh-speed imaging, we reveal the nucleation and early life phase of these bubbles. After some delay time from the beginning of the illumination, a giant bubble explosively grows, and collapses again within 200 μs (bubble life phase 1). The maximal bubble volume Vmax remarkably increases with decreasing laser power, leading to less total dumped energy E. This dumped energy shows a universal linear scaling relation with Vmax, irrespective of the gas concentration of the surrounding water. This finding supports that the initial giant bubble is a pure vapor bubble. In contrast, the delay time does depend on the gas concentration of the water, as gas pockets in the water facilitate an earlier vapor bubble nucleation, which leads to smaller delay times and lower bubble nucleation temperatures. After the collapse of the initial giant bubbles, first, much smaller oscillating bubbles form out of the remaining gas nuclei (bubble life phase 2). Subsequently, the known vaporization dominated growth phase takes over, and the bubble stabilizes (life phase 3). In the final life phase 4, the bubble slowly grows by gas expelling due to heating of the surrounding. Our findings on the explosive growth and collapse during the early life phase of a plasmonic vapor bubble have strong bearings on possible applications of such bubbles.},
	issn = {0027-8424},
	URL = {http://www.pnas.org/content/early/2018/07/06/1805912115},
	eprint = {http://www.pnas.org/content/early/2018/07/06/1805912115.full.pdf},
	journal = {Proceedings of the National Academy of Sciences}
}

	Yuliang Wang
	Mikhail Zaytsev
	Guillaume Lajoinie
	H.L. The
	Jan C. T. Eijkel
	Albert van den Berg
	Michel Versluis
	Bert Weckhuysen
	Xuehua Zhang
	Harold J. W. Zandvliet
	Detlef Lohse