Ultrafast Modulation of Thermoplasmonic Nanobubbles in Water
Journal article, 2019

Thermo-optically generated bubbles in water provide a powerful means for active matter control in microfluidic environments. These bubbles are often formed via continuous-wave illumination of an absorbing medium resulting in bubble nucleation via vaporization of water and subsequent bubble growth from the inward diffusion of gas molecules. However, to date, such bubbles tend to be several microns in diameter, resulting in slow dissipation. This limits the dynamic rate, spatial precision, and throughput of operation in any application. Here we show that isolated plasmonic structures can be utilized as highly localized heating elements to generate thermoplasmonic nanobubbles that can be modulated at frequencies up to several kilohertz in water, orders of magnitude faster than previously demonstrated for microbubbles. The nanobubbles are envisioned as advantageous localized active manipulation elements for high throughput microfluidic applications. ©

bubble nucleation


thermoplasmonic bubbles


thermoplasmonic phase change


Steven Jones

Chalmers, Physics, Bionanophotonics

Daniel Andrén

Chalmers, Physics, Bionanophotonics

Tomasz Antosiewicz

University of Warsaw

Chalmers, Physics, Bionanophotonics

Mikael Käll

Chalmers, Physics, Bionanophotonics

Nano Letters

1530-6984 (ISSN) 1530-6992 (eISSN)

Vol. 19 11 8294-8302

Subject Categories

Atom and Molecular Physics and Optics

Other Chemical Engineering

Other Physics Topics



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