The Effect of Interface Tension on Forced Oscillations of Elongated Microdroplet Aggregates in Magnetic Fluids
| Автори | V.I. Drozdova , G.V. Shagrova , M.G. Romanenko |
| Приналежність | North-Caucasian Federal University, 2, Kulakova Pr., 355009 Stavropol, Russia |
| Е-mail | |
| Випуск | Том 6, Рік 2014, Номер 3 |
| Дати | Одержано 19.05.2014, у відредагованій формі - 03.07.2014, опубліковано online - 15.07.2014 |
| Посилання | V.I. Drozdova, G.V. Shagrova, M.G. Romanenko, J. Nano- Electron. Phys. 6 No 3, 03013 (2014) |
| DOI | |
| PACS Number(s) | 75.50.Mm, 79.60.Jv |
| Ключові слова | Magnetic fluid (21) , Forced oscillations (2) , Interfacial tension, Microdroplet aggregate (2) . |
| Анотація | Changes in the shape of microdroplet aggregates exposed to an alternating magnetic field with frequency from 0.01 to 1 Hz are investigated both experimentally and using a computer simulation. Microdroplet aggregates are spherical droplets of a highly concentrated magnetic fluid with a radius from one to several tens of microns dispersed in a liquid with a low concentration of magnetic particles. For values of interfacial tension σ > 2·10 – 6 N/m small oscillations in a weak alternating field could not be obtained, but periodic forced oscillations were obtained at strong elongations. Oscillations of elongated microdroplet aggregates are of a periodical nonsinusoidal type with higher harmonics and subharmonics in the spectrum. |
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