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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Jinpyo Jeon Jeong-Bong Lee Sang Kug Chung Daeyoung Kim |
| Copyright Year | 2015 |
| Description | Author affiliation: Dept. of Inf. & Commun. Eng., Korea Army Acad. at Yeong-cheon, South Korea (Daeyoung Kim) || Dept. of Mech. Eng., Myongji Univ., Yongin, South Korea (Jinpyo Jeon; Sang Kug Chung) || Dept. of Electr. Eng., Univ. of Texas at Dallas, Dallas, TX, USA (Jeong-Bong Lee) |
| Abstract | We report a magnetic liquid metal marble which enables the wireless on-demand manipulation of a liquid metal droplet for electrical switching applications with an applied magnetic field. Gallium-based liquid metal alloy has been applied to various applications but most applications are based on deformability due to its surface wettability originating from the natural oxide layer. We suggested and demonstrated a `magnetic liquid metal marble' by coating the oxidized surface of the liquid metal with ferromagnetic iron (Fe) particles. It shows non-wetting characteristics by measuring static and sliding contact angles against different surfaces such as a glass slide, a Teflon-coated glass, and polydimethylsiloxane (PDMS). On the Teflon-coated glass, the largest contact angle of 169.0 ± 1.3° was achieved for 45 nm diameter Fe particles-coated magnetic liquid metal marble, and the lowest sliding angle of 17.2° was achieved for 45 μm diameter Fe particles coated-magnetic liquid metal marble, respectively. We also studied the minimum required magnetic field of 150 gauss to mobilize the 45 μm diameter Fe particles coated-magnetic liquid metal marble and demonstrated the on-demand wireless magnetic manipulation of the liquid metal marble to power light emitting diodes (LEDs). |
| Starting Page | 1834 |
| Ending Page | 1837 |
| File Size | 4964931 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781479989553 |
| ISSN | 21641641 |
| DOI | 10.1109/TRANSDUCERS.2015.7181305 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2015-06-21 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Magnetic liquids Iron Glass Surface treatment Magnetic resonance imaging Magnetic field measurement Galinstan® Magnetic liquid metal marble non-wetting microfluidics lyophobicity |
| Content Type | Text |
| Resource Type | Article |
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