Measurements of dipole moments and a Q-patch model of collisionally charged grains
Identical glass spheres of 434 ± 17 μ m diameter are charged in collisions among each other. At slow speed some form dimers under microgravity and oscillate within the electrical field of a capacitor. The dipole moments deduced from these oscillations are large. They cannot be explained by the net c...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2020-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/abae43 |
| _version_ | 1797750331711422464 |
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| author | Tobias Steinpilz Felix Jungmann Kolja Joeris Jens Teiser Gerhard Wurm |
| author_facet | Tobias Steinpilz Felix Jungmann Kolja Joeris Jens Teiser Gerhard Wurm |
| author_sort | Tobias Steinpilz |
| collection | DOAJ |
| description | Identical glass spheres of 434 ± 17 μ m diameter are charged in collisions among each other. At slow speed some form dimers under microgravity and oscillate within the electrical field of a capacitor. The dipole moments deduced from these oscillations are large. They cannot be explained by the net charges measured for each grain (up to ±3 × 10 ^5 e ) and show no significant dependence on the net charge in the given range. This requires a highly non-homogeneous charge distribution on the grain surface. We simulate heterogeneous charging with a Q-patch charging model in agreement to the experimental data. |
| first_indexed | 2024-03-12T16:32:11Z |
| format | Article |
| id | doaj.art-26a1080047aa4d10831dcbbddc4757a8 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:32:11Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-26a1080047aa4d10831dcbbddc4757a82023-08-08T15:26:59ZengIOP PublishingNew Journal of Physics1367-26302020-01-0122909302510.1088/1367-2630/abae43Measurements of dipole moments and a Q-patch model of collisionally charged grainsTobias Steinpilz0https://orcid.org/0000-0001-5375-2618Felix Jungmann1https://orcid.org/0000-0002-0269-2763Kolja Joeris2https://orcid.org/0000-0002-5841-2636Jens Teiser3https://orcid.org/0000-0003-4468-4937Gerhard Wurm4https://orcid.org/0000-0002-7962-4961Faculty of Physics, University of Duisburg-Essen , Lotharstr. 1-21, 47057 Duisburg, GermanyFaculty of Physics, University of Duisburg-Essen , Lotharstr. 1-21, 47057 Duisburg, GermanyFaculty of Physics, University of Duisburg-Essen , Lotharstr. 1-21, 47057 Duisburg, GermanyFaculty of Physics, University of Duisburg-Essen , Lotharstr. 1-21, 47057 Duisburg, GermanyFaculty of Physics, University of Duisburg-Essen , Lotharstr. 1-21, 47057 Duisburg, GermanyIdentical glass spheres of 434 ± 17 μ m diameter are charged in collisions among each other. At slow speed some form dimers under microgravity and oscillate within the electrical field of a capacitor. The dipole moments deduced from these oscillations are large. They cannot be explained by the net charges measured for each grain (up to ±3 × 10 ^5 e ) and show no significant dependence on the net charge in the given range. This requires a highly non-homogeneous charge distribution on the grain surface. We simulate heterogeneous charging with a Q-patch charging model in agreement to the experimental data.https://doi.org/10.1088/1367-2630/abae43electrical dipole momentstatic chargetriboelectric effectexperimental measurementscomputer simulationQ-patch model |
| spellingShingle | Tobias Steinpilz Felix Jungmann Kolja Joeris Jens Teiser Gerhard Wurm Measurements of dipole moments and a Q-patch model of collisionally charged grains New Journal of Physics electrical dipole moment static charge triboelectric effect experimental measurements computer simulation Q-patch model |
| title | Measurements of dipole moments and a Q-patch model of collisionally charged grains |
| title_full | Measurements of dipole moments and a Q-patch model of collisionally charged grains |
| title_fullStr | Measurements of dipole moments and a Q-patch model of collisionally charged grains |
| title_full_unstemmed | Measurements of dipole moments and a Q-patch model of collisionally charged grains |
| title_short | Measurements of dipole moments and a Q-patch model of collisionally charged grains |
| title_sort | measurements of dipole moments and a q patch model of collisionally charged grains |
| topic | electrical dipole moment static charge triboelectric effect experimental measurements computer simulation Q-patch model |
| url | https://doi.org/10.1088/1367-2630/abae43 |
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