A new hydrodynamic interpretation of liquid metal droplet motion induced by electrocapillary phenomenon

Soft Matter ◽  
2021 ◽  
Author(s):  
Jiao Ye ◽  
Si-Cong Tan ◽  
Lei Wang ◽  
Jing Liu
Keyword(s):  
Surface Tension ◽  
Liquid Metal ◽  
Electric Potential ◽  
Potential Gradient ◽  
Marangoni Effect ◽  
Metal Droplet ◽  
Surface Tension Gradient ◽  
Droplet Motion ◽  
Liquid Metal Droplet

The Marangoni effect, induced by the surface tension gradient resulting from the gradient of temperature, concentration, or electric potential gradient along the surface, is commonly utilized to manipulate a droplet....

Measurement of the Surface Tension of Liquid Metal-Droplet in Arc Welding

2013 ◽  
Vol 652-654 ◽  
pp. 2265-2269
Author(s):  
Li Sun ◽  
Xi Bao Wang ◽  
Xiang Liang Li ◽  
Chen Xi Liu
Keyword(s):  
Surface Tension ◽  
Liquid Metal ◽  
Aerodynamic Drag ◽  
Welding Process ◽  
Metal Droplet ◽  
Test Method ◽  
Liquid Metal Droplet ◽  
Welding Arc ◽  
Measurement Results ◽  
Novel Method

The surface tension of the liquid metal droplet was measured in the welding arc fields using a novel method. This method eliminates the interference of the electrode magnetic force and aerodynamic drag force with the measurement results during the welding process. The validity of test method was recognized by both theories and experiments. The surface tensions of the H08A wire melting droplet were measured at various currents.

Operation performance analysis of a liquid metal droplet radiator for space nuclear reactor

2021 ◽  
Vol 158 ◽  
pp. 108301
Author(s):  
Linyi Yang ◽  
Chenglong Wang ◽  
Hao Qin ◽  
Dalin Zhang ◽  
Wenxi Tian ◽  
...  
Keyword(s):  
Performance Analysis ◽  
Liquid Metal ◽  
Nuclear Reactor ◽  
Metal Droplet ◽  
Operation Performance ◽  
Liquid Metal Droplet

scholarly journals Expansion and Fragmentation of a Liquid-Metal Droplet by a Short Laser Pulse

2018 ◽  
Vol 10 (6) ◽  
Author(s):  
S. Yu. Grigoryev ◽  
B. V. Lakatosh ◽  
M. S. Krivokorytov ◽  
V. V. Zhakhovsky ◽  
S. A. Dyachkov ◽  
...  
Keyword(s):  
Liquid Metal ◽  
Laser Pulse ◽  
Metal Droplet ◽  
Short Laser Pulse ◽  
Liquid Metal Droplet

Pseudo-wetting Behaviour of Nanostructures Induced by STM

2007 ◽  
Vol 1059 ◽  
Author(s):  
Paul Campbell ◽  
George Walmsley
Keyword(s):  
Liquid Metal ◽  
Data Storage ◽  
Contact Process ◽  
Temporal Stability ◽  
Surface Displacement ◽  
Metal Droplet ◽  
Similar Process ◽  
Strong Interactions ◽  
Liquid Metal Droplet ◽  
Dynamics Simulations

ABSTRACTThe behavior of nano-scale liquid metal droplets has recently received renewed research interest following the exciting new observations of Sutter and Sutter [1]. In the present paper, we consider whether similar conditions can be generated for observing liquid metal droplet phenomena in a scanning probe architecture. Strong interactions between tip and sample in tunnelling microscopies can be deliberately invoked by lowering the tunnel gap impedance. Indeed, nanoscale features may be created this may, often exhibiting temporal stability suggestive of applications for ultra high density data storage. Alternatively, unstable features may form, and their decay characteristics can be related to local dynamics and kinetics. In real liquids, one such evolutionary mode involves the phenomenon of wetting, and the formation of thin precursor films. Here, it is demonstrated that a similar process may occur for the decay of a nanoscale mound of [presumed] Au atoms onto an Au(111) substrate. The mound is thought to be created by a ‘jump-to-contact’ process when the gap impedance, Zg, is deliberately lowered by reducing the tip-surface displacement. Resultant features have a diameter of circa 30nm, and heights of up to l0nm. They appear stable when scanned repeatedly at gap impedances higher than 10MΩ, however if Zg is lowered below 500kΩ, then morphology can alter dynamically, and a thin layer of material, only two atomic widths thick, is seen to emanate from the periphery. Relaxation in the nanostructure is observed. Interestingly, the observations agree qualitatively with wetting phenomena observed on microscale droplets of involatile liquids on solid surfaces. Favourable comparisons may also be drawn in the light of recent results using molecular-dynamics simulations and Monte-Carlo methods.

Acoustic wave-driven oxidized liquid metal-based energy harvester

2018 ◽  
Vol 81 (2) ◽  
pp. 20902 ◽  
Author(s):  
Jinpyo Jeon ◽  
Sang Kug Chung ◽  
Jeong-Bong Lee ◽  
Seok Joo Doo ◽  
Daeyoung Kim
Keyword(s):  
Liquid Metal ◽  
Acoustic Wave ◽  
Double Layer ◽  
Electrical Double Layer ◽  
Energy Harvester ◽  
Metal Droplet ◽  
Acoustic Energy ◽  
Maximum Output ◽  
Output Current ◽  
Liquid Metal Droplet

We report an oxidized liquid metal droplet-based energy harvester that converts acoustic energy into electrical energy by modulating an electrical double layer that originates from the deformation of the oxidized liquid metal droplet. Gallium-based liquid metal alloy has been developed for various applications owing to the outstanding material properties, such as its high electrical conductivity (metallic property) and unlimited deformability (liquid property). In this study, we demonstrated energy harvesting using an electrical double layer between the acoustic wave-modulated liquid metal droplet and two electrodes. The proposed energy harvester consisted of top and bottom electrodes covered with the dielectric layer and a Gallium-based liquid metal droplet placed between the electrodes. When we applied an external bias voltage and acoustic wave to the proposed device, the contact area between the liquid metal droplet and the electrodes changed, leading to the variation of the capacitance in the electrical double layer and the generation of electrical output current. Using the proposed energy harvester, the maximum output current of 41.2 nA was generated with an applied acoustic wave of 30 Hz. In addition, we studied the relationships between the maximum output current and a variety of factors, such as the size of the liquid metal droplet, the thickness of the hydrophobic layer, and the distance between the top and bottom electrode plates.

scholarly journals A Wheeled Robot Driven by a Liquid-Metal Droplet

2018 ◽  
Vol 30 (51) ◽  
pp. 1805039 ◽  
Author(s):  
Jian Wu ◽  
Shi-Yang Tang ◽  
Tao Fang ◽  
Weihua Li ◽  
Xiangpeng Li ◽  
...  
Keyword(s):  
Liquid Metal ◽  
Metal Droplet ◽  
Liquid Metal Droplet ◽  
Wheeled Robot
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