Magnetic levitation of a ferrofluid droplet in mid-air
Magnetic levitation of a ferrofluid droplet in mid-air
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DOI：
10.1063/1.5129611
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发表时间：
2020-01
期刊：
影响因子：
1.6
通讯作者：
T. Ohji;Soichiro Yamaguchi;K. Amei;K. Kiyota
中科院分区：
文献类型：
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作者：
T. Ohji;Soichiro Yamaguchi;K. Amei;K. Kiyota
基于反馈控制的磁悬浮系统在室温下成功地将磁流体液滴悬浮在空气中。该磁悬浮系统由杆状电磁铁、位移传感器、拒油膜、样机和外围控制装置组成。悬浮液滴的质量为15毫克，粘度为5000 mPa.sec。利用高速摄像机详细研究了液滴从控制启动到稳定悬浮过程中的纯变形和行为。磁悬浮液滴的行为非常快，就像普通的固体物体一样。水滴在半空中最终稳定在一个底部肿胀的蛋形中。一滴磁悬浮技术将为磁流体机械手系统的开发奠定基础。一种用于输送、保持和输送磁流体的磁悬浮系统样机在室温下成功地将一滴磁流体反馈控制悬浮在空气中。该磁悬浮系统由杆状电磁铁、位移传感器、拒油膜、样机和外围控制装置组成。悬浮液滴的质量为15毫克，粘度为5000 mPa.sec。利用高速摄像机详细研究了液滴从控制启动到稳定悬浮过程中的纯变形和行为。磁悬浮液滴的行为非常快，就像普通的固体物体一样。水滴在半空中最终稳定在一个底部肿胀的蛋形中。磁悬浮一个液滴的技术将导致开发一种用于磁流体的机械手系统。
A prototype magnetic levitation (maglev) system for feeding, holding and conveying ferrofluids successfully levitated a ferrofluid droplet with feedback control in the air at room temperature. This maglev system consists of a rod-shaped electromagnet, a displacement sensor, an oil-repellent film, a sample stage, and peripheral control devices. The levitated droplet has a mass of 15 mg and a viscosity of 5,000 mPa.sec. The pure deformation and behavior of the droplet in the process from the control start to the stable levitation state were investigated in detail using a high-speed camera. The magnetically levitated droplet behaved very fast as well as a common solid object. The droplet finally stabilized in a bottom-swollen egg shape in mid-air. The technique of magnetically levitating one droplet will lead to developing a manipulator system for ferrofluids.A prototype magnetic levitation (maglev) system for feeding, holding and conveying ferrofluids successfully levitated a ferrofluid droplet with feedback control in the air at room temperature. This maglev system consists of a rod-shaped electromagnet, a displacement sensor, an oil-repellent film, a sample stage, and peripheral control devices. The levitated droplet has a mass of 15 mg and a viscosity of 5,000 mPa.sec. The pure deformation and behavior of the droplet in the process from the control start to the stable levitation state were investigated in detail using a high-speed camera. The magnetically levitated droplet behaved very fast as well as a common solid object. The droplet finally stabilized in a bottom-swollen egg shape in mid-air. The technique of magnetically levitating one droplet will lead to developing a manipulator system for ferrofluids.