抄録
Ferrofluid is a magnetic functional fluid that flows in the direction of strong magnetic field. The authors tried non-contact levitation of a ferrofluid droplet in mid-air by controlling external magnetic field from a bar-shaped electromagnet. This paper describes the magnetic levitation system which consists of the electromagnet with a tapered tip, displacement sensor, and z-positioning stage with an oil-repellent film. This paper also reports on the procedure to establish non-contact levitation of the droplet. We evaluated the deformation and levitating behavior of the 15 mg droplet before and after the levitation start by using a high-speed camera. Finally, from the viewpoint of magnetic levitation technology, we experimentally derived the relationship between control current, mass of a droplet, and levitation gap.
寄稿の翻訳タイトル | Actively controlled magneticlevitation of a ferrofluid droplet in mid-airusing a bar-shaped electromagnet |
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本文言語 | 日本 |
ページ(範囲) | 239-244 |
ページ数 | 6 |
ジャーナル | Journal of the Japan Society of Applied Electromagnetics and Mechanics |
巻 | 28 |
号 | 3 |
DOI | |
出版ステータス | 出版済み - 2020 |