Ultrafast Modulation of Thermoplasmonic Nanobubbles in Water

• DOI: 10.1021/acs.nanolett.9b03895
• Publication Date: 2019-10-24T21:07:31Z
• Authors: Steven Jones; Daniel Andrén; Tomasz J. Antosie...; Mikael Käll
• Keywords: Modulation (music); Vaporization

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