Micro-gravity: Superconducting coils for crystal growth. Influence of the levitation force on natural convection in the fluid

Quettier, L.; Vincent-Viry, O.; Mailfert, A.; Juster, F.P.

doi:10.1051/epjap:2003017

Cited by 15 publications

(5 citation statements)

References 8 publications

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“…To understand the crystal growth mechanism, the effect of the magnetic field on natural convection has been studied. It has been proven, in simulations and experiments, that suitable, large gradient magnetic fields can be used to reduce or cancel the natural convection [25][26][27][28][29][30][31][32][33][34][35][36] that takes place during protein crystallization. Furthermore, the discovery of the effect of the magnetic field on the diffusion coefficient 24 and the apparent viscosity 37 has provided more information that has yielded a deeper insight into the crystallization process in magnetic fields.…”

Section: Introductionmentioning

confidence: 99%

Multiple Orientation Responses of Lysozyme Crystals to Magnetic Field When Paramagnetic Salts Are Used As the Crystallization Agents

Yin

Luo

et al. 2009

Crystal Growth & Design

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We investigated the effect of paramagnetic salts (NiCl 2 , CoCl 2 , and MnCl 2 ) on the magnetic orientation of henegg white lysozyme (HEWL) crystals at different pHs. Multiple orientation responses of the crystals to magnetic fields were discovered when NiCl 2 and CoCl 2 were used as the crystallization agents (the c-axis and the AE110ae orientations for NiCl 2 solution, and the c-axis, the a-axis and the AE110ae orientations for CoCl 2 solution). Only the normal c-axis orientation was found when MnCl 2 was used as the crystallization agent. The multiple orientation responses were sensitive to the variations in the pH. These phenomena are discussed in the context of the incorporation of paramagnetic cations into lysozyme. Although anions affect the crystallization of lysozyme, the effect of cations on the crystallization of lysozyme has been considered marginal. This study reveals that cations can also exhibit profound effects on the crystallization of lysozyme.

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Section: Introductionmentioning

confidence: 99%

Multiple Orientation Responses of Lysozyme Crystals to Magnetic Field When Paramagnetic Salts Are Used As the Crystallization Agents

Yin

Luo

et al. 2009

Crystal Growth & Design

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“…Furthermore, a magnetic field has a significant effect on solutions [6][7][8][9]. Several studies have demonstrated the experimental and theoretical potential to reduce convection in a solution within a magnetic field gradient [10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Microgravity-like Crystallization of Paramagnetic Species in Strong Magnetic Fields

Samsonenko,

Artiukhova,

Letyagin

et al. 2024

IJMS

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The crystallization of paramagnetic species in a magnetic field gradient under microgravity-like conditions is an area of interest for both fundamental and applied science. In this paper, a setup for the crystallization of paramagnetic species in the magnetic field up to 7 T generated by a superconducting magnet is described. The research includes calculations of the conditions necessary to compensate for the gravitational force for several types of paramagnetic substances using the magnetic field of superconducting magnets (4.7 T, 7 T, 9.4 T, and 16.4 T). Additionally, for the first time, the crystallization of copper sulfate and cobalt sulfate, as well as a mixture of copper sulfate and cobalt sulfate under gravitational force compensation in a superconducting magnet, was performed. This paper experimentally demonstrates the feasibility of growing paramagnetic crystals within the volume of a test tube on the example of copper and cobalt sulfate crystals. A comparison of crystals grown from the solution of a mixture of copper and cobalt sulfates under the same conditions, with and without the presence of a magnetic field, showed changes in both the number and size of crystals.

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“…This method enabled us to study, in particular, the behaviour of propellant used in space, such as oxygen or hydrogen (Wunenberg et al 2000;Beysens et al 2005;Quettier et al 2005;Nikolayev 2002;Chatain et al 2006;Pichavant et al 2009). Partial or total gravity compensation allows, among other things, to modify or control the heat exchange by convection (Braithwaite et al 1991;Khaldi and Gillon 2001;Quettier et al 2003), or homogenizing crystal growth (Wakayama et al 1997;Motokawa et al 2001;Hamai et al 2003;Maki et al 2004) or solidification (Takashi et al 2006). Magnetic levitation is due to force acting on paramagnetic or diamagnetic materials within a non-uniform magnetic field.…”

Section: Introductionmentioning

confidence: 99%

Design of a Large Oxygen Magnetic Levitation Facility

Lorin¹,

Mailfert²,

Chatain

2009

Microgravity Sci. Technol.

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The present magnetic levitation facility offers an alternative to space means for studying fluids and especially liquid oxygen that exhibits important safety requirements. The station has great use flexibility.Thus it enables us to study hydrodynamic instabilities (acceleration and deceleration phase) and also to focus on thermal exchanges (nuclear and film boiling) and transition phase of fluids under reduced gravity such as Lunar, Martian or micro-gravity. The volume of liquid oxygen levitated is about two litres with a resulting acceleration less than 0.1 m/s 2 . Besides the aspect ratio of the working cell can be changed.

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Micro-gravity: Superconducting coils for crystal growth. Influence of the levitation force on natural convection in the fluid

Cited by 15 publications

References 8 publications

Multiple Orientation Responses of Lysozyme Crystals to Magnetic Field When Paramagnetic Salts Are Used As the Crystallization Agents

Multiple Orientation Responses of Lysozyme Crystals to Magnetic Field When Paramagnetic Salts Are Used As the Crystallization Agents

Microgravity-like Crystallization of Paramagnetic Species in Strong Magnetic Fields

Design of a Large Oxygen Magnetic Levitation Facility

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