Optomechanical Actuation of Diamagnetically Levitated Pyrolytic Graphite
| العنوان: | Optomechanical Actuation of Diamagnetically Levitated Pyrolytic Graphite |
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| المؤلفون: | Hatem ElBidweihy, Steven Yee, Cody Brownell, Peter Joyce, Steven R. Montgomery, Kelly DeLawder, Miriam Ewall-Wice |
| المصدر: | IEEE Transactions on Magnetics. 55:1-6 |
| بيانات النشر: | Institute of Electrical and Electronics Engineers (IEEE), 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | 010302 applied physics, Materials science, Condensed matter physics, Laser, 01 natural sciences, Displacement (vector), Electronic, Optical and Magnetic Materials, Magnetic field, law.invention, law, Magnet, 0103 physical sciences, Diamagnetism, Graphite, Pyrolytic carbon, Electrical and Electronic Engineering, Magnetic levitation |
| الوصف: | The magnetic susceptibility of pyrolytic graphite (PyG) is temperature dependent. Under an external magnetic field, a levitated PyG sample with a localized temperature change experiences unequal diamagnetic forces. In this paper, we present a study of the macroscale optomechanical displacement of a levitated PyG sample by using a laser source to locally increase the temperature. Dynamic finite-element method simulations show that a localized increase in the sample temperature, simulating a laser source, decreases the diamagnetic force in that local area, leading to the displacement of the PyG sample in the plane of the permanent magnet array. Experimental setups built using different laser sources and samples confirm the range of applicability of the actuation phenomenon to different conditions. An additional setup without moving parts reduced the likelihood by which airflow could have caused the displacement, as we suspect happened in the previous studies. |
| تدمد: | 1941-0069 0018-9464 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::dbc0291feafdc480eb06df372dca3a54 https://doi.org/10.1109/tmag.2019.2892332 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........dbc0291feafdc480eb06df372dca3a54 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19410069 00189464 |
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