Demonstration of the effect of stirring on nucleation from experiments on the International Space Station using the ISS-EML facility

Abstract The effect of fluid flow on crystal nucleation in supercooled liquids is not well understood. The variable density and temperature gradients in the liquid make it difficult to study this under terrestrial gravity conditions. Nucleation experiments were therefore made in a microgravity envir...

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Autores principales:	A. K. Gangopadhyay, M. E. Sellers, G. P. Bracker, D. Holland-Moritz, D. C. Van Hoesen, S. Koch, P. K. Galenko, A. K. Pauls, R. W. Hyers, K. F. Kelton
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Biotechnology TP248.13-248.65 Physiology QP1-981
Acceso en línea:	https://doaj.org/article/0f3dec0ebc114b6a97a084f8da82bd0f
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spelling	oai:doaj.org-article:0f3dec0ebc114b6a97a084f8da82bd0f2021-12-02T18:49:22ZDemonstration of the effect of stirring on nucleation from experiments on the International Space Station using the ISS-EML facility10.1038/s41526-021-00161-92373-8065https://doaj.org/article/0f3dec0ebc114b6a97a084f8da82bd0f2021-08-01T00:00:00Zhttps://doi.org/10.1038/s41526-021-00161-9https://doaj.org/toc/2373-8065Abstract The effect of fluid flow on crystal nucleation in supercooled liquids is not well understood. The variable density and temperature gradients in the liquid make it difficult to study this under terrestrial gravity conditions. Nucleation experiments were therefore made in a microgravity environment using the Electromagnetic Levitation Facility on the International Space Station on a bulk glass-forming Zr57Cu15.4Ni12.6Al10Nb5 (Vit106), as well as Cu50Zr50 and the quasicrystal-forming Ti39.5Zr39.5Ni21 liquids. The maximum supercooling temperatures for each alloy were measured as a function of controlled stirring by applying various combinations of radio-frequency positioner and heater voltages to the water-cooled copper coils. The flow patterns were simulated from the known parameters for the coil and the levitated samples. The maximum nucleation temperatures increased systematically with increased fluid flow in the liquids for Vit106, but stayed nearly unchanged for the other two. These results are consistent with the predictions from the Coupled-Flux model for nucleation.A. K. GangopadhyayM. E. SellersG. P. BrackerD. Holland-MoritzD. C. Van HoesenS. KochP. K. GalenkoA. K. PaulsR. W. HyersK. F. KeltonNature PortfolioarticleBiotechnologyTP248.13-248.65PhysiologyQP1-981ENnpj Microgravity, Vol 7, Iss 1, Pp 1-6 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Biotechnology TP248.13-248.65 Physiology QP1-981
spellingShingle	Biotechnology TP248.13-248.65 Physiology QP1-981 A. K. Gangopadhyay M. E. Sellers G. P. Bracker D. Holland-Moritz D. C. Van Hoesen S. Koch P. K. Galenko A. K. Pauls R. W. Hyers K. F. Kelton Demonstration of the effect of stirring on nucleation from experiments on the International Space Station using the ISS-EML facility
description	Abstract The effect of fluid flow on crystal nucleation in supercooled liquids is not well understood. The variable density and temperature gradients in the liquid make it difficult to study this under terrestrial gravity conditions. Nucleation experiments were therefore made in a microgravity environment using the Electromagnetic Levitation Facility on the International Space Station on a bulk glass-forming Zr57Cu15.4Ni12.6Al10Nb5 (Vit106), as well as Cu50Zr50 and the quasicrystal-forming Ti39.5Zr39.5Ni21 liquids. The maximum supercooling temperatures for each alloy were measured as a function of controlled stirring by applying various combinations of radio-frequency positioner and heater voltages to the water-cooled copper coils. The flow patterns were simulated from the known parameters for the coil and the levitated samples. The maximum nucleation temperatures increased systematically with increased fluid flow in the liquids for Vit106, but stayed nearly unchanged for the other two. These results are consistent with the predictions from the Coupled-Flux model for nucleation.
format	article
author	A. K. Gangopadhyay M. E. Sellers G. P. Bracker D. Holland-Moritz D. C. Van Hoesen S. Koch P. K. Galenko A. K. Pauls R. W. Hyers K. F. Kelton
author_facet	A. K. Gangopadhyay M. E. Sellers G. P. Bracker D. Holland-Moritz D. C. Van Hoesen S. Koch P. K. Galenko A. K. Pauls R. W. Hyers K. F. Kelton
author_sort	A. K. Gangopadhyay
title	Demonstration of the effect of stirring on nucleation from experiments on the International Space Station using the ISS-EML facility
title_short	Demonstration of the effect of stirring on nucleation from experiments on the International Space Station using the ISS-EML facility
title_full	Demonstration of the effect of stirring on nucleation from experiments on the International Space Station using the ISS-EML facility
title_fullStr	Demonstration of the effect of stirring on nucleation from experiments on the International Space Station using the ISS-EML facility
title_full_unstemmed	Demonstration of the effect of stirring on nucleation from experiments on the International Space Station using the ISS-EML facility
title_sort	demonstration of the effect of stirring on nucleation from experiments on the international space station using the iss-eml facility
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/0f3dec0ebc114b6a97a084f8da82bd0f
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Demonstration of the effect of stirring on nucleation from experiments on the International Space Station using the ISS-EML facility

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