Abstract

Due to the interfacial energy minimization phenomenon, rolling a liquid droplet on a solid powder bed consisting of hydrophobic micro-nano sized particles results in particle adhesion onto the droplet surface. These interesting flexible formations (known as dry waters or liquid marble) have attracted a great deal of attention in surface science. After the formation of a magnetic liquid marble with a radius of about 1.1 mm, reversible opening and closing of magnetic nanoparticle shell by the permanent magnet is conducted in the experimental part of this study. In the simulation part of our investigation, which is the novelty of our work, by modeling a liquid marble by a droplet with an elastic shell, the effect of gravitational force on the marble and its motion on a curved substrate were simulated by the finite element method. A novel scheme for increasing the sensitivity of a liquid marble-based accelerometer is presented. The presented scheme for this investigation consists of a liquid marble placed on a curved surface which is manipulated magnetically by placing a permanent magnet above the curved surface. The produced magnetic force deforms the marble shape by opposing its weight, therefore causes the marble to get approximately spherical rather than puddle shaped form.

中文翻译：

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磁性液体大理石的实验研究和提高液体大理石加​​速度计灵敏度的新方案

摘要

由于界面能最小化现象，液滴在由疏水性微纳米尺寸颗粒组成的固体粉末床上滚动会导致颗粒粘附在液滴表面上。这些有趣的柔性地层（称为干水或液态大理石）引起了表面科学的广泛关注。在形成半径约为1.1毫米的磁性液体大理石后，本研究的实验部分通过永磁体对磁性纳米颗粒壳进行可逆的打开和关闭。在我们研究的模拟部分，这是我们工作的新颖之处，通过用具有弹性壳的液滴对液态大理石进行建模，通过有限元模拟了重力对大理石的影响及其在弯曲基底上的运动。方法。提出了一种提高液体大理石加​​速度计灵敏度的新颖方案。本研究提出的方案包括将液体大理石放置在弯曲表面上，通过在弯曲表面上方放置永磁体来对其进行磁性操纵。产生的磁力通过对抗其重量而使大理石形状变形，因此使大理石变成近似球形而不是水坑形状。