Observation of sudden temperature jumps in optically levitated microdroplets due to morphology-dependent input resonances

Abstract

During the slow evaporation of an optically levitated microdroplet of a glycerol-water mixture (3:1) (approximately 12.44 µm in radius) several morphology-dependent input resonances have been observed in its Raman spectrum. These resonances yield sudden temperature jumps of approximately 10 °C in the microdroplet as evidenced by sudden shifts in the output (Raman) resonance spectra. The latter effects could be explained by a simple energy balance calculation and the dependence of droplet refractive index and density on temperature.

Optical Levitation of Single Microdroplets at Temperatures Down to 180 K

“…Otherwise, the large energy density of the focused beam would result in heating and evaporation of the particles. Studies of temperature effects in optically levitated particles have been described by Vehring and Schweiger, [31] Popp et al [32] and L¸bben et al [33] …”

Temperature cross-sensitivity characteristics of singlemode–multimode–singlemode fiber structure

“…The glycerol-water mixture serves as the cladding of the NCF. Glycerol-water mixture (3:1 volume mixture) is chosen because it is a conventional and easily accessible liquid with a larger RI around 1.43 and a TOC of −1.827 × 10 −4 / • C. 23 The packaging capillary not only makes the senor convenient to be This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitationnew.aip.org/termsconditions.…”

Radiation-Induced Droplet Breakup of Nano-Dispersed Coal-in-Water Colloidal Fuels

“…The correlation between the absorption efficiency and the particle size is in resonant mode, and this is determined by the Mie Scattering Theory [27,28]. At a certain particle size, the absorption efficiency is solely a function of the refractive indices [29]. In Fig.…”