表面能梯度驱动下纳米水滴在不同微结构表面上的运动?

物理学报

表面能梯度驱动下纳米水滴在不同微结构表面上的运动?

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张凯, 陆勇俊, 王峰会. 2015: 表面能梯度驱动下纳米水滴在不同微结构表面上的运动?, 物理学报, null(6): 064703. doi: 10.7498/aps.64.064703

引用本文:

张凯, 陆勇俊, 王峰会. 2015: 表面能梯度驱动下纳米水滴在不同微结构表面上的运动?, 物理学报, null(6): 064703. doi: 10.7498/aps.64.064703

Zhang Kai, Lu Yong-Jun, Wang Feng-Hui. 2015: Motion of the nano droplets driven by energy gradient on surfaces with different microstructures, Acta Physica Sinica, null(6): 064703. doi: 10.7498/aps.64.064703

Citation:

Zhang Kai, Lu Yong-Jun, Wang Feng-Hui. 2015: Motion of the nano droplets driven by energy gradient on surfaces with different microstructures, Acta Physica Sinica, null(6): 064703. doi: 10.7498/aps.64.064703

表面能梯度驱动下纳米水滴在不同微结构表面上的运动?

西北工业大学工程力学系,西安,710129

Motion of the nano droplets driven by energy gradient on surfaces with different microstructures

摘要: 近年来，微观尺度下水滴在能量梯度表面上的运动情况受到了广泛关注，然而通过实验进行研究尚存在困难。本文利用分子动力学方法研究了不同微结构表面上纳米水滴在表面能梯度驱动下的运动情况。结果表明：槽状和柱状微结构可以明显提升纳米水滴在微结构表面上的运动效率，钉状微结构会降低纳米水滴的运动效率，尽管它具有稳定的疏水性；结合槽状和钉状结构的混合状微结构兼具二者的优点，不但可以有效地提高纳米水滴在粗糙表面上的运动效率，而且具有比较高的疏水稳定性。此外，表面能的微小改变会明显影响水滴的运动效率。
- 分子动力学模拟 /
- 表面能梯度 /
- 表面微结构 /
- 纳米水滴
Abstract: In recent years, the motion of nanodroplets on energy gradient surface on a microscale has attracted widespread attention, however, experimental studies are still irrealizable. In this work, the motions of nanodroplets driven by the energy gradient on surfaces with different microstructures are studied by molecular dynamics method. The results show that: the groove-shaped and post-shaped microstructures can remarkably enhance the motion e?ciency of the nanodroplets, while the nail-shaped microstructures decrease the motion e?ciency, despite they can achieve a stable hydrophobicity. The hybrid microstructures composed of groove-shaped and nail-shaped textures inherit both the ad-vantages of the two microstructure, which not only enhances the motion e?ciency of nanodroplets, but also increases the hydrophobic stability. Furthermore, small change in surface energy can significantly affect the velocity of nanodroplet.

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表面能梯度驱动下纳米水滴在不同微结构表面上的运动?

西北工业大学工程力学系,西安,710129

关键词:

摘要: 近年来，微观尺度下水滴在能量梯度表面上的运动情况受到了广泛关注，然而通过实验进行研究尚存在困难。本文利用分子动力学方法研究了不同微结构表面上纳米水滴在表面能梯度驱动下的运动情况。结果表明：槽状和柱状微结构可以明显提升纳米水滴在微结构表面上的运动效率，钉状微结构会降低纳米水滴的运动效率，尽管它具有稳定的疏水性；结合槽状和钉状结构的混合状微结构兼具二者的优点，不但可以有效地提高纳米水滴在粗糙表面上的运动效率，而且具有比较高的疏水稳定性。此外，表面能的微小改变会明显影响水滴的运动效率。

English Abstract

Motion of the nano droplets driven by energy gradient on surfaces with different microstructures

西北工业大学工程力学系,西安,710129

Keywords:

Abstract: In recent years, the motion of nanodroplets on energy gradient surface on a microscale has attracted widespread attention, however, experimental studies are still irrealizable. In this work, the motions of nanodroplets driven by the energy gradient on surfaces with different microstructures are studied by molecular dynamics method. The results show that: the groove-shaped and post-shaped microstructures can remarkably enhance the motion e?ciency of the nanodroplets, while the nail-shaped microstructures decrease the motion e?ciency, despite they can achieve a stable hydrophobicity. The hybrid microstructures composed of groove-shaped and nail-shaped textures inherit both the ad-vantages of the two microstructure, which not only enhances the motion e?ciency of nanodroplets, but also increases the hydrophobic stability. Furthermore, small change in surface energy can significantly affect the velocity of nanodroplet.

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