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首页> 外文期刊>Applied Surface Science >Deformation and motion by gravity and magnetic field of a droplet of water-based magnetic fluid on a hydrophobic surface
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Deformation and motion by gravity and magnetic field of a droplet of water-based magnetic fluid on a hydrophobic surface

机译：疏水性表面上的水滴磁性流体在重力和磁场作用下的变形和运动

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摘要

Motion and deformation of a water-based magnetic fluid on a hydrophobic surface were investigated under gravity and a magnetic field. Surface energy and the resultant contact angle of the magnetic fluid depend on the surfactant concentration. The fluid viscosity is governed mainly by magnetite concentration. The front edge of the droplet moved under a weak external field. The rear edge required a higher external field for movement. The forces of gravity and the magnetic field for moving of the front edge are almost equal. However, those of the rear edge are different. The motion of magnetic fluids by an external field depends on concentrations of surfactants and magnetic particles, the external field, and experimental assembly.
机译：在重力和磁场作用下，研究了疏水性表面上水基磁性流体的运动和变形。表面能和磁性流体的最终接触角取决于表面活性剂的浓度。流体粘度主要由磁铁矿浓度决定。液滴的前边缘在弱外部场下移动。后缘需要更大的外部运动场。重力和用于移动前边缘的磁场几乎相等。但是，后边缘的那些不同。外部磁场对磁性流体的运动取决于表面活性剂和磁性颗粒的浓度，外部磁场以及实验装置。

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