Transfer of Energy and Momentum between Magnetoactive Surface Microstructure and a Solid Object
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arXiv
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| Autori principali: | , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866911291623342080 |
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| author | Geldof, Arne Kopačin, Jan Straus, Izidor Kriegl, Raphael Kravanja, Gaia Hribar, Luka Jezeršek, Matija Shamonin, Mikhail Kokot, Gašper Drevenšek-Olenik, Irena |
| author_facet | Geldof, Arne Kopačin, Jan Straus, Izidor Kriegl, Raphael Kravanja, Gaia Hribar, Luka Jezeršek, Matija Shamonin, Mikhail Kokot, Gašper Drevenšek-Olenik, Irena |
| contents | We investigated the physical mechanisms driving directional transport of solid objects by micro-lamellar structures laser-inscribed on the surface of a magnetoactive elastomer (MAE). When subjected to a rotating magnetic field with magnitude of 175 mT and a time period of 0.4 s, the lamellas reorient within a few milliseconds, reaching angular velocities up to 1100 rad/s. This rapid motion is crucial for efficient momentum and energy transfer to objects in contact with the lamellas. The analysis of collisions of a single lamella with a lead ball with a 2.2 mm diameter shows that the lamella can transfer around 50 nJ of energy, propelling the ball to a speed of around 35 mm/s. We show how this value sets the upper limit for the transport speed of the ball on multi-lamellar MAE arrays. We also explain the background of three distinct transport regimes (kicking, pushing, and bouncing modes) observed on these magnetically driven conveyor belts. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_22342 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Transfer of Energy and Momentum between Magnetoactive Surface Microstructure and a Solid Object Geldof, Arne Kopačin, Jan Straus, Izidor Kriegl, Raphael Kravanja, Gaia Hribar, Luka Jezeršek, Matija Shamonin, Mikhail Kokot, Gašper Drevenšek-Olenik, Irena Soft Condensed Matter We investigated the physical mechanisms driving directional transport of solid objects by micro-lamellar structures laser-inscribed on the surface of a magnetoactive elastomer (MAE). When subjected to a rotating magnetic field with magnitude of 175 mT and a time period of 0.4 s, the lamellas reorient within a few milliseconds, reaching angular velocities up to 1100 rad/s. This rapid motion is crucial for efficient momentum and energy transfer to objects in contact with the lamellas. The analysis of collisions of a single lamella with a lead ball with a 2.2 mm diameter shows that the lamella can transfer around 50 nJ of energy, propelling the ball to a speed of around 35 mm/s. We show how this value sets the upper limit for the transport speed of the ball on multi-lamellar MAE arrays. We also explain the background of three distinct transport regimes (kicking, pushing, and bouncing modes) observed on these magnetically driven conveyor belts. |
| title | Transfer of Energy and Momentum between Magnetoactive Surface Microstructure and a Solid Object |
| topic | Soft Condensed Matter |
| url | https://arxiv.org/abs/2511.22342 |