Plasmonic Microbubble Dynamics in Binary Liquids.

ABSTRACT: The growth of surface plasmonic microbubbles in binary water/ethanol solutions is experimentally studied. The microbubbles are generated by illuminating a gold nanoparticle array with a continuous wave laser. Plasmonic bubbles exhibit ethanol concentration-dependent behaviors. For low ethanol concentrations (f_e) of ≲67.5%, bubbles do not exist at the solid-liquid interface. For high f_e values of ≳80%, the bubbles behave as in pure ethanol. Only in an intermediate window of 67.5% ≲ f_e ≲ 80% do we find sessile plasmonic bubbles with a highly nontrivial temporal evolution, in which as a function of time three phases can be discerned. (1) In the first phase, the microbubbles grow, while wiggling. (2) As soon as the wiggling stops, the micro

SUBMITTER: Li X 

PROVIDER: S-EPMC7569674 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature