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Approximate expression of Young's equation and molecular dynamics simulation for its applicability
Cui SW; Wei J; Liu WW; Zhu RC(朱如曾); Ping Q
Source PublicationCHINESE PHYSICS B
2019
Volume28Issue:1Pages:AR16801
ISSN1674-1056
Abstract

In 1805, Thomas Young was the first to propose an equation (Young's equation) to predict the value of the equilibrium contact angle of a liquid on a solid. On the basis of our predecessors, we further clarify that the contact angle in Young's equation refers to the super-nano contact angle. Whether the equation is applicable to nanoscale systems remains an open question. Zhu et al. [College Phys. 47 (1985)] obtained the most simple and convenient approximate formula, known as the Zhu-Qian approximate formula of Young's equation. Here, using molecular dynamics simulation, we test its applicability for nanodrops. Molecular dynamics simulations are performed on argon liquid cylinders placed on a solid surface under a temperature of 90 K, using Lennard-Jones potentials for the interaction between liquid molecules and between a liquid molecule and a solid molecule with the variable coefficient of strength a. Eight values of a between 0.650 and 0.825 are used. By comparison of the super-nano contact angles obtained from molecular dynamics simulation and the Zhu-Qian approximate formula of Young's equation, we find that it is qualitatively applicable for nanoscale systems.

Keywordmolecular dynamics simulation Young's equation surface tension Zhu-Qian approximate formula of Young's equation
DOI10.1088/1674-1056/28/1/016801
Indexed BySCI ; EI
Language英语
WOS IDWOS:000456870700001
WOS Research AreaPhysics, Multidisciplinary
WOS SubjectPhysics
Funding OrganizationNational Natural Science Foundation of China [11072242] ; Key Scientific Studies Program of Hebei Province Higher Education Institute, China [ZD2018301] ; Cangzhou National Science Foundation, China [177000001]
CSCD IDCSCD:6411244
ClassificationQ3
Ranking1
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/78509
Collection职能与支撑部门
Affiliation1.{Cui, Shu-Wen、Liu, Wei-Wei} Cangzhou Normal Univ, Dept Phys & Informat Engn, Cangzhou 061001, Peoples R China
2.{Cui, Shu-Wen、Wei, Jiu-An、Zhu, Ru-Zeng} Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China
3.{Cui, Shu-Wen、Wei, Jiu-An、Zhu, Ru-Zeng} Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Beijing 100190, Peoples R China
4.{Wei, Jiu-An} Silfex, Div Lam Res, 950 South Franklin St, Eaton, OH 45320 USA
5.{Ping, Qian} Univ Sci & Technol Beijing, Dept Phys, Beijing 100083, Peoples R China
Recommended Citation
GB/T 7714
Cui SW,Wei J,Liu WW,et al. Approximate expression of Young's equation and molecular dynamics simulation for its applicability[J]. CHINESE PHYSICS B,2019,28(1):AR16801.
APA Cui SW,Wei J,Liu WW,Zhu RC,&Ping Q.(2019).Approximate expression of Young's equation and molecular dynamics simulation for its applicability.CHINESE PHYSICS B,28(1),AR16801.
MLA Cui SW,et al."Approximate expression of Young's equation and molecular dynamics simulation for its applicability".CHINESE PHYSICS B 28.1(2019):AR16801.
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