Detection of vapor nanobubbles by small angle neutron scattering (SANS)

Emilian Popov; Lilin He; Elvis Dominguez-Ontiveros; Yuri Melnichenko

doi:10.1063/1.5023595

Detection of vapor nanobubbles by small angle neutron scattering (SANS)

Emilian Popov, Lilin He, Elvis Dominguez-Ontiveros, Yuri Melnichenko

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7 Scopus citations

Abstract

Experiments using boiling water on untreated (roughness 100-300 nm) metal surfaces using small-angle neutron scattering (SANS) show the appearance of structures that are 50-70 nm in size when boiling is present. The scattering signal disappears when the boiling ceases, and no change in the signal is detected at any surface temperature condition below saturation. This confirms that the signal is caused by vapor nanobubbles. Two boiling regimes are evaluated herein that differ by the degree of subcooling (3-10 °C). A polydisperse spherical model with a log-normal distribution fits the SANS data well. The size distribution indicates that a large number of nanobubbles exist on the surface during boiling, and some of them grow into large bubbles.

Original language	English
Article number	153704
Journal	Applied Physics Letters
Volume	112
Issue number	15
DOIs	https://doi.org/10.1063/1.5023595
State	Published - Apr 9 2018

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title = "Detection of vapor nanobubbles by small angle neutron scattering (SANS)",

abstract = "Experiments using boiling water on untreated (roughness 100-300 nm) metal surfaces using small-angle neutron scattering (SANS) show the appearance of structures that are 50-70 nm in size when boiling is present. The scattering signal disappears when the boiling ceases, and no change in the signal is detected at any surface temperature condition below saturation. This confirms that the signal is caused by vapor nanobubbles. Two boiling regimes are evaluated herein that differ by the degree of subcooling (3-10 °C). A polydisperse spherical model with a log-normal distribution fits the SANS data well. The size distribution indicates that a large number of nanobubbles exist on the surface during boiling, and some of them grow into large bubbles.",

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AU - Popov, Emilian

AU - He, Lilin

AU - Dominguez-Ontiveros, Elvis

AU - Melnichenko, Yuri

PY - 2018/4/9

Y1 - 2018/4/9

N2 - Experiments using boiling water on untreated (roughness 100-300 nm) metal surfaces using small-angle neutron scattering (SANS) show the appearance of structures that are 50-70 nm in size when boiling is present. The scattering signal disappears when the boiling ceases, and no change in the signal is detected at any surface temperature condition below saturation. This confirms that the signal is caused by vapor nanobubbles. Two boiling regimes are evaluated herein that differ by the degree of subcooling (3-10 °C). A polydisperse spherical model with a log-normal distribution fits the SANS data well. The size distribution indicates that a large number of nanobubbles exist on the surface during boiling, and some of them grow into large bubbles.

AB - Experiments using boiling water on untreated (roughness 100-300 nm) metal surfaces using small-angle neutron scattering (SANS) show the appearance of structures that are 50-70 nm in size when boiling is present. The scattering signal disappears when the boiling ceases, and no change in the signal is detected at any surface temperature condition below saturation. This confirms that the signal is caused by vapor nanobubbles. Two boiling regimes are evaluated herein that differ by the degree of subcooling (3-10 °C). A polydisperse spherical model with a log-normal distribution fits the SANS data well. The size distribution indicates that a large number of nanobubbles exist on the surface during boiling, and some of them grow into large bubbles.

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JO - Applied Physics Letters

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Detection of vapor nanobubbles by small angle neutron scattering (SANS)

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