Open AccessMicrobubble generation using fiber optic tips coated with nanoparticles
Author(s) -
Reinher PimentelDomínguez,
Juan HernándezCordero,
Roberto Zenit
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.008732
Subject(s) - materials science , coating , optical fiber , photothermal therapy , nanoparticle , optics , bubble , fiber , optoelectronics , nanotechnology , composite material , physics , parallel computing , computer science
We show that fiber optic tips can be used as microbubble generators in liquid media. Using standard single-mode silica fibers incorporating nanoparticles (carbon nanoparticles and metallic powders), bubbles can be generated with low optical powers owing to the enhanced photothermal effects of the coating materials. We provide details about the hydrodynamic effects generated in the vicinity of the fiber tip during the coating process, bubble generation and growth. Flow visualization techniques show that thermal effects lead to bubble formation on the tip of the fibers, and coating optimization is crucial for optimal performance of the probes.