Micron-Scale Observation of Nucleating Water Vapor Bubbles
POSTER
Abstract
Surface plasmon microscopy is used to detect nucleation and lift-off of vapor bubbles in water. Vapor bubbles are generated under pool boiling conditions by heating with a focused Ti-Sapphire laser in the near-infrared region. These bubbles modulate the local index of refraction, thereby altering the local excitation of the surface plasmon which are excited in the Kretchmann geometry and observed with a CCD camera. Altering the surface roughness, we observe how bubbles interact in their earliest stages.