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On the applicability of Young-Laplace equation for nanoscale liquid drops
Yan H; Wei J; Cui SW; Xu SH(徐升华); Sun ZW(孙祉伟); Zhu, RZ; Zhu, RZ (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China.; Zhu, RZ (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Beijing 100190, Peoples R China.
Source PublicationRUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A
2016
Volume90Issue:3Pages:635-640
ISSN0036-0244
AbstractDebates continue on the applicability of the Young-Laplace equation for droplets, vapor bubbles and gas bubbles in nanoscale. It is more meaningful to find the error range of the Young-Laplace equation in nanoscale instead of making the judgement of its applicability. To do this, for seven liquid argon drops (containing 800, 1000, 1200, 1400, 1600, 1800, or 2000 particles, respectively) at T = 78 K we determined the radius of surface of tension R (s) and the corresponding surface tension gamma (s) by molecular dynamics simulation based on the expressions of R (s) and gamma (s) in terms of the pressure distribution for droplets. Compared with the two-phase pressure difference directly obtained by MD simulation, the results show that the absolute values of relative error of two-phase pressure difference given by the Young-Laplace equation are between 0.0008 and 0.027, and the surface tension of the argon droplet increases with increasing radius of surface of tension, which supports that the Tolman length of Lennard-Jones droplets is positive and that Lennard-Jones vapor bubbles is negative. Besides, the logic error in the deduction of the expressions of the radius and the surface tension of surface of tension, and in terms of the pressure distribution for liquid drops in a certain literature is corrected.
KeywordLiquid Drop Surface Tension Surface Of Tension Young-laplace Equation Molecular Dynamics Simulation
DOI10.1134/S0036024416030158
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000370798400021
WOS KeywordFINITE REYNOLDS-NUMBER ; POISEUILLE FLOW ; EQUILIBRIUM POSITIONS ; MICROFLUIDIC DEVICES ; PARTICLE SEPARATION ; RIGID SPHERE ; TUBE FLOW ; MIGRATION ; MOTION ; FORCE
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
Funding OrganizationThis work was supported by the National Natural Science Foundation of China (grant nos. 11072242 and 11032011) and University Teaching Reform Project of Shanxi Province (Grant no. J2013105).
DepartmentNML复杂流体
RankingFalse
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/58664
Collection国家微重力实验室
Corresponding AuthorZhu, RZ (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China.; Zhu, RZ (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Yan H,Wei J,Cui SW,et al. On the applicability of Young-Laplace equation for nanoscale liquid drops[J]. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A,2016,90(3):635-640.
APA Yan H.,Wei J.,Cui SW.,徐升华.,孙祉伟.,...&Zhu, RZ .(2016).On the applicability of Young-Laplace equation for nanoscale liquid drops.RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A,90(3),635-640.
MLA Yan H,et al."On the applicability of Young-Laplace equation for nanoscale liquid drops".RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 90.3(2016):635-640.
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