Electrically controlled cloud of bulk nanobubbles in water solutions.

ABSTRACT: Using different experimental techniques we visualize a cloud of gas in water that is produced electrochemically by the alternating polarity process. Liquid enriched with gas does not contain bubbles strongly scattering visible light but its refractive index changes significantly near the electrodes. The change of the refractive index is a collective effect of bulk nanobubbles with a diameter smaller than 200 nm. Any alternative explanation fails to explain the magnitude of the effect. Spatial structure of the cloud is investigated with the optical lever method. Its dynamics is visualised observing optical distortion of the electrode images or using differential interference contrast method. The cloud covers concentric electrodes, in a steady state it is roughly hemispherical with a size tw

SUBMITTER: Postnikov AV 

PROVIDER: S-EPMC5519201 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature