Measurement of the liquid-structure factor of supercooled gallium and mercury

Carlson, David Gray; Feder, Jens; Segmüller, Armin

doi:10.1103/physreva.9.400

Cited by 34 publications

(6 citation statements)

References 9 publications

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“…These suggestions initiated several microscopic structure studies of liquid gallium with x-ray and neutron scattering during the past decades [17][18][19][20][21][22][23][24][25][26]. The surprising result is a shoulder on the high-Q side of the main structural peak, which is at Q 0 = 2.55 Å−1 .…”

Section: Introductionmentioning

confidence: 99%

Dynamics on next-neighbour distances in liquid and undercooled gallium

Demmel

2018

J. Phys.: Condens. Matter

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Density fluctuations of liquid and 20 K undercooled gallium have been studied by neutron spectroscopy. The decay of density fluctuations has been recorded at the structure factor maximum over a wide temperature range up to twice the melting temperature. The amplitude of the scattering function falls off with rising temperature in a nonlinear way with a changing slope around 1.5 T melting . The derived generalized longitudinal viscosity shows an upturn with decreasing temperature in the same temperature range. This increase in viscosity can be understood that liquid gallium transforms from a more fluid liquid metal to a more viscous liquid metal in that temperature range upon cooling. The change in the amplitude shows a remarkable agreement with results from liquid aluminium, lead and rubidium. This study suggests a universal crossover in dynamics of liquid monatomic metals, despite the many peculiar properties of gallium.

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Section: Introductionmentioning

confidence: 99%

Dynamics on next-neighbour distances in liquid and undercooled gallium

Demmel

2018

J. Phys.: Condens. Matter

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“…the maximum in the liquid structure factor S(Q) and showed that S(Qo) should diverge as the stability limit is approached. There have been several recent experiments measuring S(Q ) by X-ray scattering in supercooled liquid gallium [11,12]. In particular the experiments of Bizid et al have been performed at temperatures down to near the lowest temperature at which gallium has ever been obtained in the liquid phase, and show that there is no tendency to any divergence in S(Q).…”

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confidence: 99%

Quasi-elastic neutron scattering from liquid gallium over the temperature range 163 to 333 K

Bosio¹,

Schedler

Windsor

1976

J. Phys. France

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“…Liquid metal (gallium) is a super-cooled metal at RT. Thus, it preserves the liquid phase even below its freezing point (29.8 °C) [36] However, once seed crystal is provided into the metal to initiate crystallization, it can solidify. [37] This approach has previously been utilized to demonstrate shape memory elastic fibers.…”

Section: Resultsmentioning

confidence: 99%

Ultrastretchable Thermo‐ and Mechanochromic Fiber with Healable Metallic Conductivity

Sin

Singh

Bhuyan

et al. 2021

Adv Elect Materials

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This work demonstrates a facile way to fabricate ultrastretchable thermo‐ and mechanochromic fiber with healable metallic conductivity. Thermochromic hollow elastic fiber is prepared by using silicone composite with thermochromic pigment. Once the fiber forms, gallium‐based liquid metal is injected into the fiber. The composite fiber with liquid metal core shows uniform color change along the fiber by applying Joule heating through the liquid metal wire. The fiber with multiple thermochromic pigment locally distributed along the fiber shows serial color change by increased current. The healable conductivity of the metal core is demonstrated by restoring electrical conductivity near room temperature. When it is in a solid state, the wire can fracture during deformation, thus the wire loses conductivity. However, upon body heating, the wire can rewire, because of the low melting point of the metal (gallium, 29.8 °C). This healing ability of the metal core can allow the fiber to have healable thermochromic behavior. Stretching a liquid metal wire can change the geometry of the wires, resulting in a color change because of increased resistance while Joule heating is applied. This thermo‐ and mechanochromic fiber with liquid metal core would find use in wearable and conformal electronics, electronic textiles, and soft robotics.

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Measurement of the liquid-structure factor of supercooled gallium and mercury

Cited by 34 publications

References 9 publications

Dynamics on next-neighbour distances in liquid and undercooled gallium

Dynamics on next-neighbour distances in liquid and undercooled gallium

Quasi-elastic neutron scattering from liquid gallium over the temperature range 163 to 333 K

Ultrastretchable Thermo‐ and Mechanochromic Fiber with Healable Metallic Conductivity

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