title: Laser-induced shape distortions of flowing droplets deduced from morphology-dependent resonances in fluorescence spectra.
abstract: Low-energy laser irradiation (~0.15 microJ) on a Rhodamine 6G ethanol droplet (radius, 21.1 microm) flowing in a linear stream has been shown to induce damped oscillations in the wavelengths at which the morphology-dependent resonances (MDR's) in the fluorescence are located. Such oscillatory behavior of the MDR's is consistent with those calculated for the elastic scattering from a large sphere that oscillates with small amplitudes (5 parts in 10(4)) from a sphere to a prolate spheroid and then to an oblate spheroid. The observed damped oscillations provide information on the surface tension and viscosity of an ethanol droplet.
authors.forename: H M
authors.initials: HM
authors.lastname: Tzeng
authors.forename: M B
authors.initials: MB
authors.lastname: Long
authors.forename: R K
authors.initials: RK
authors.lastname: Chang
authors.forename: P W
authors.initials: PW
authors.lastname: Barber