Behavior of a gas bubble separating from a cavity formed in magnetic fluid in an inhomogeneous magnetic field
•Separation of bubbles from a gas cavity in a magnetic liquid is studied.•Analysis of acoustomagnetic oscillations gives the bubble’ s radius.•The gas bubble radius does not depend on the gas influx rate.•Possible application as a gas counter for microfluidic devices. In this work, we report results...
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| Veröffentlicht in: | Journal of magnetism and magnetic materials 2022-05, Vol.549, p.169067, Article 169067 |
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| container_start_page | 169067 |
| container_title | Journal of magnetism and magnetic materials |
| container_volume | 549 |
| creator | Ryapolov, P.A. Sokolov, E.A. Postnikov, E.B. |
| description | •Separation of bubbles from a gas cavity in a magnetic liquid is studied.•Analysis of acoustomagnetic oscillations gives the bubble’ s radius.•The gas bubble radius does not depend on the gas influx rate.•Possible application as a gas counter for microfluidic devices.
In this work, we report results of the experimental study of the dynamics of a gas bubble separating from the air cavity in a magnetic fluid placed in an inhomogeneous magnetic field created by a ring magnet. Two experiments were carried out for samples with different concentrations: video recordings of the interphase boundary in a flat channel and recordings of electromagnetic vibrations caused by the gas bubble oscillations in a magnetic fluid. It is shown that the bubbles have a stable size. The respective dependencies of the bubble size on the magnetic fluid concentration and the air supply argue that it is possible to use the considered setup as a microdoser or a gas meter in microfluidics applications. |
| doi_str_mv | 10.1016/j.jmmm.2022.169067 |
| format | Article |
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In this work, we report results of the experimental study of the dynamics of a gas bubble separating from the air cavity in a magnetic fluid placed in an inhomogeneous magnetic field created by a ring magnet. Two experiments were carried out for samples with different concentrations: video recordings of the interphase boundary in a flat channel and recordings of electromagnetic vibrations caused by the gas bubble oscillations in a magnetic fluid. It is shown that the bubbles have a stable size. The respective dependencies of the bubble size on the magnetic fluid concentration and the air supply argue that it is possible to use the considered setup as a microdoser or a gas meter in microfluidics applications.</description><identifier>ISSN: 0304-8853</identifier><identifier>EISSN: 1873-4766</identifier><identifier>DOI: 10.1016/j.jmmm.2022.169067</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Air supplies ; Gas bubble ; Inhomogeneous magnetic field ; Interphase boundary ; Magnetic fields ; Magnetic fluid ; Magnetic fluids ; Magneto-acoustic oscillations ; Microfluidic ; Microfluidics</subject><ispartof>Journal of magnetism and magnetic materials, 2022-05, Vol.549, p.169067, Article 169067</ispartof><rights>2022 Elsevier B.V.</rights><rights>Copyright Elsevier BV May 1, 2022</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c328t-22a7109a597242444142a76ae80f45aff16d2cfa386058026266435146b8c7f43</citedby><cites>FETCH-LOGICAL-c328t-22a7109a597242444142a76ae80f45aff16d2cfa386058026266435146b8c7f43</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0304885322000464$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65534</link.rule.ids></links><search><creatorcontrib>Ryapolov, P.A.</creatorcontrib><creatorcontrib>Sokolov, E.A.</creatorcontrib><creatorcontrib>Postnikov, E.B.</creatorcontrib><title>Behavior of a gas bubble separating from a cavity formed in magnetic fluid in an inhomogeneous magnetic field</title><title>Journal of magnetism and magnetic materials</title><description>•Separation of bubbles from a gas cavity in a magnetic liquid is studied.•Analysis of acoustomagnetic oscillations gives the bubble’ s radius.•The gas bubble radius does not depend on the gas influx rate.•Possible application as a gas counter for microfluidic devices.
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| ispartof | Journal of magnetism and magnetic materials, 2022-05, Vol.549, p.169067, Article 169067 |
| issn | 0304-8853 1873-4766 |
| language | eng |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Air supplies Gas bubble Inhomogeneous magnetic field Interphase boundary Magnetic fields Magnetic fluid Magnetic fluids Magneto-acoustic oscillations Microfluidic Microfluidics |
| title | Behavior of a gas bubble separating from a cavity formed in magnetic fluid in an inhomogeneous magnetic field |
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