scholarly journals Dynamic study of [Emim]Ac ionic liquid droplet impact on mildly heated solid surfaces

2022 ◽  
Vol 130 ◽  
pp. 105783
Author(s):  
Fangfang Zhang ◽  
Xiangyu Li ◽  
Huajie Li ◽  
Jingdan Tang ◽  
Gang Chen ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Liquid Droplet ◽  
Droplet Impact ◽  
Dynamic Study ◽  
Solid Surfaces

Extraction of Cations from an Ionic Liquid Droplet in a Dielectric Liquid under Electric Field

2014 ◽  
Vol 5 (17) ◽  
pp. 3021-3025 ◽  
Author(s):  
Myung Mo Ahn ◽  
Do Jin Im ◽  
Jang Gyu Kim ◽  
Dong Woog Lee ◽  
In Seok Kang
Keyword(s):  
Ionic Liquid ◽  
Electric Field ◽  
Liquid Droplet ◽  
Dielectric Liquid

scholarly journals Anomalous Interfacial Structuring of a Non-Halogenated Ionic Liquid: Effect of Substrate and Temperature

2018 ◽  
Vol 2 (4) ◽  
pp. 60 ◽  
Author(s):  
Milad Radiom ◽  
Patricia Pedraz ◽  
Georgia Pilkington ◽  
Patrick Rohlmann ◽  
Sergei Glavatskih ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Surface Charge ◽  
Force Measurement ◽  
Surface Force ◽  
Solid Surfaces ◽  
Effect Of Temperature ◽  
Decay Length ◽  
Force Microscopy ◽  
Large Size ◽  
Atomic Force

We investigate the interfacial properties of the non-halogenated ionic liquid (IL), trihexyl(tetradecyl)phosphonium bis(mandelato)borate, [P6,6,6,14][BMB], in proximity to solid surfaces, by means of surface force measurement. The system consists of sharp atomic force microscopy (AFM) tips interacting with solid surfaces of mica, silica, and gold. We find that the force response has a monotonic form, from which a characteristic steric decay length can be extracted. The decay length is comparable with the size of the ions, suggesting that a layer is formed on the surface, but that it is diffuse. The long alkyl chains of the cation, the large size of the anion, as well as crowding of the cations at the surface of negatively charged mica, are all factors which are likely to oppose the interfacial stratification which has, hitherto, been considered a characteristic of ionic liquids. The variation in the decay length also reveals differences in the layer composition at different surfaces, which can be related to their surface charge. This, in turn, allows the conclusion that silica has a low surface charge in this aprotic ionic liquid. Furthermore, the effect of temperature has been investigated. Elevating the temperature to 40 °C causes negligible changes in the interaction. At 80 °C and 120 °C, we observe a layering artefact which precludes further analysis, and we present the underlying instrumental origin of this rather universal artefact.

scholarly journals Pressure generated at the instant of impact between a liquid droplet and solid surface

2018 ◽  
Vol 5 (12) ◽  
pp. 181101 ◽  
Author(s):  
Y. Tatekura ◽  
M. Watanabe ◽  
K. Kobayashi ◽  
T. Sanada
Keyword(s):  
Solid Surface ◽  
Shape Factor ◽  
Liquid Droplet ◽  
Pressure Rise ◽  
Propagation Speed ◽  
Spherical Shape ◽  
Water Hammer ◽  
Droplet Impact ◽  
Maximum Pressure ◽  
The Impact

The prime objective of this study is to answer the question: How large is the pressure developed at the instant of a spherical liquid droplet impact on a solid surface? Engel first proposed that the maximum pressure rise generated by a spherical liquid droplet impact on a solid surface is different from the one-dimensional water-hammer pressure by a spherical shape factor (Engel 1955 J. Res. Natl Bur. Stand. 55 (5), 281–298). Many researchers have since proposed various factors to accurately predict the maximum pressure rise. We numerically found that the maximum pressure rise can be predicted by the combination of water-hammer theory and the shock relation; then, we analytically extended Engel’s elastic impact model, by realizing that the progression speed of the contact between the gas–liquid interface and the solid surface is much faster than the compression wavefront propagation speed at the instant of the impact. We successfully correct Engel’s theory so that it can accurately provide the maximum pressure rise at the instant of impact between a spherical liquid droplet and solid surface, that is, no shape factor appears in the theory.

scholarly journals Diameter-dependent wetting of tungsten disulfide nanotubes

2016 ◽  
Vol 113 (48) ◽  
pp. 13624-13629 ◽  
Author(s):  
Ohad Goldbart ◽  
Sidney R. Cohen ◽  
Ifat Kaplan-Ashiri ◽  
Polina Glazyrina ◽  
H. Daniel Wagner ◽  
...  
Keyword(s):  
Composite Materials ◽  
Molecular Basis ◽  
Liquid Droplet ◽  
Outer Wall ◽  
Tungsten Disulfide ◽  
Solid Surfaces ◽  
Hollow Core ◽  
Experimental Paradigm ◽  
Simple Process ◽  
Unique Shape

The simple process of a liquid wetting a solid surface is controlled by a plethora of factors—surface texture, liquid droplet size and shape, energetics of both liquid and solid surfaces, as well as their interface. Studying these events at the nanoscale provides insights into the molecular basis of wetting. Nanotube wetting studies are particularly challenging due to their unique shape and small size. Nonetheless, the success of nanotubes, particularly inorganic ones, as fillers in composite materials makes it essential to understand how common liquids wet them. Here, we present a comprehensive wetting study of individual tungsten disulfide nanotubes by water. We reveal the nature of interaction at the inert outer wall and show that remarkably high wetting forces are attained on small, open-ended nanotubes due to capillary aspiration into the hollow core. This study provides a theoretical and experimental paradigm for this intricate problem.

Generation of water–ionic liquid droplet pairs in soybean oil on microfluidic chip

Lab on a Chip ◽  
2010 ◽  
Vol 10 (3) ◽  
pp. 313-319 ◽  
Author(s):  
Xuan Feng ◽  
Ying Yi ◽  
Xu Yu ◽  
Dai-Wen Pang ◽  
Zhi-Ling Zhang
Keyword(s):  
Ionic Liquid ◽  
Soybean Oil ◽  
Microfluidic Chip ◽  
Liquid Droplet

Effect of liquid droplet impact velocity on liquid wicking kinetics in surface V-grooves

2011 ◽  
Vol 66 (23) ◽  
pp. 6120-6127 ◽  
Author(s):  
Mohidus Samad Khan ◽  
Dushmantha Kannangara ◽  
Gil Garnier ◽  
Wei Shen
Keyword(s):  
Impact Velocity ◽  
Liquid Droplet ◽  
Droplet Impact
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