The Intrinsic Fragility of the Liquid-Vapor Interface: A Stress Network Perspective.

The Intrinsic Fragility of the Liquid-Vapor Interface: A Stress Network Perspective.
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DOI:
10.1021/acs.langmuir.2c00201
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发表时间:
2022-04-19
期刊:
影响因子:
3.9
通讯作者:
Smith, E. R.
Smith, E. R.
中科院分区:
化学2区
文献类型:
--
作者:
Rahman, Muhammad Rizwanur;Shen, Li;Ewen, James P.;Dini, Daniele;Smith, E. R.

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用分子动力学模拟方法研究了Lennard-Jones流体汽液界面的演化。结果表明,随着温度的升高,本征曲线的阻尼明显。调查的表面应力分布,我们已经确定了一个线性变化的空间填充性质(分形维数)的应力簇在本征表面的表面张力增加,或等效地,与降低温度。对这些应力网络的逾渗分析表明,在较高的温度下,应力场更加脱节。这导致更脆弱(或连接不良)的界面,从而导致表面张力降低。
The evolution of the liquid–vapor interface of a Lennard-Jones fluid is examined with molecular dynamics simulations using the intrinsic sampling method. Results suggest clear damping of the intrinsic profiles with increasing temperature. Investigating the surface stress distribution, we have identified a linear variation of the space-filling nature (fractal dimension) of the stress clusters at the intrinsic surface with increasing surface tension or, equivalently, with decreasing temperature. A percolation analysis of these stress networks indicates that the stress field is more disjointed at higher temperatures. This leads to more fragile (or poorly connected) interfaces which result in a reduction in surface tension.
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