Freezing drops with powders
نویسندگان
چکیده
منابع مشابه
Universality of tip singularity formation in freezing water drops.
A drop of water deposited on a cold plate freezes into an ice drop with a pointy tip. While this phenomenon clearly finds its origin in the expansion of water upon freezing, a quantitative description of the tip singularity has remained elusive. Here we demonstrate how the geometry of the freezing front, determined by heat transfer considerations, is crucial for the tip formation. We perform sy...
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S metastable liquids are ubiquitous but eventually nucleate the thermodynamically stable solid phase. Whether the nucleation occurs with the help of a foreign substance (heterogeneous nucleation) or without it (homogeneous nucleation), uniform probability of cluster formation is typically assumed, scaling with surface area and volume, respectively. Recently, however, the volume scaling for homo...
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The visualization data (8 movies) presented in this article are related to the research article entitled "Freezing and glass transitions upon cooling and warming and ice/freeze-concentration-solution morphology of emulsified aqueous citric acid" (A. Bogdan, M.J. Molina, H. Tenhu, 2016) [1]. The movies recorded in-situ with optical cryo-miscroscopy (OC-M) demonstrate for the first time freezing ...
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Recent experiments by Suzuki et al. (Chem. Phys. Lett. 2007, 445, 37−41) and Gurganus et al. (J. Phys. Chem. Lett. 2011, 2, 1449−1454) on liquid−solid nucleation arrived at conflicting results regarding a preferred status of the triple line between water, air, and an ice-catalyzing substrate. Temperature nonuniformity within drops and substratedependent contact angles have been suggested as cul...
متن کاملImmersion freezing of supercooled water drops containing glassy volcanic ash particles
The freezing temperatures of hundreds of water drops with radii 20–50 lm containing known average concentrations of suspended, mostly micronto submicron-sized, volcanic ash particles composed of SiO2-rich glass were recorded using optical microscopy. As expected, the ash suppresses supercooling, and in contrast to earlier studies of much larger ash particles, the median freezing temperature cle...
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ژورنال
عنوان ژورنال: Physics of Fluids
سال: 2013
ISSN: 1070-6631,1089-7666
DOI: 10.1063/1.4820020