Abstract

A self-control mechanism that stabilizes the size of Rhodamine B-doped water microdroplets standing on a superhydrophobic surface is demonstrated. The mechanism relies on the interplay between the condensation rate that was kept constant and the evaporation rate induced by laser excitation, which critically depends on the size of the microdroplets. The radii of individual water microdroplets $(>5\mu \mathrm{m})$ stayed within a few nano meters during long time periods (up to $455\mathrm{s}$). By blocking the laser excitation for $500\mathrm{ms}$, the stable volume of individual microdroplets was shown to change stepwise.

© 2007 Optical Society of America

Probing of ultrahigh optical Q-factors of individual liquid microdroplets on superhydrophobic surfaces using tapered optical fiber waveguides

Alexandr Jonáš, Yasin Karadag, Michael Mestre, and Alper Kiraz
J. Opt. Soc. Am. B 29(12) 3240-3247 (2012)

Femtosecond laser pulse-induced breakdown of a single water microdroplet

E. S. Efimenko, Yu. A. Malkov, A. A. Murzanev, and A. N. Stepanov
J. Opt. Soc. Am. B 31(3) 534-541 (2014)

Chemical lasing in pendant droplets: lasing-spectra, emission-pattern, and cavity-lifetime measurements

Seongsik Chang, Nathan B. Rex, and Richard K. Chang
J. Opt. Soc. Am. B 16(8) 1224-1235 (1999)

Observation of whispering gallery modes in elastic light scattering from microdroplets optically trapped in a microfluidic channel

S. Anand, M. Eryürek, Y. Karadag, A. Erten, A. Serpengüzel, A. Jonáš, and A. Kiraz
J. Opt. Soc. Am. B 33(7) 1349-1354 (2016)

Raman lasing near 630 nm from stationary glycerol-water microdroplets on a superhydrophobic surface

A. Sennaroglu, A. Kiraz, M. A. Dündar, A. Kurt, and A. L. Demirel
Opt. Lett. 32(15) 2197-2199 (2007)