Electrohydrodynamics of an ionic liquid meniscus during evaporation of ions in a regime of high electric field
Numerical investigations are presented for an ionic liquid meniscus undergoing evaporation of ions in a regime of high electric field. A detailed model is developed to simulate the behavior of a stationary meniscus attached to a liquid feed system. The latter serves as a proxy for commonly utilized...
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| Format: | Article |
| Language: | English |
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American Physical Society (APS)
2019
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| Online Access: | https://hdl.handle.net/1721.1/122659 |
| _version_ | 1826205800596504576 |
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| author | Coffman, Chase Spenser Martínez-Sánchez, Manuel Lozano, Paulo C |
| author2 | Massachusetts Institute of Technology. Department of Aeronautics and Astronautics |
| author_facet | Massachusetts Institute of Technology. Department of Aeronautics and Astronautics Coffman, Chase Spenser Martínez-Sánchez, Manuel Lozano, Paulo C |
| author_sort | Coffman, Chase Spenser |
| collection | MIT |
| description | Numerical investigations are presented for an ionic liquid meniscus undergoing evaporation of ions in a regime of high electric field. A detailed model is developed to simulate the behavior of a stationary meniscus attached to a liquid feed system. The latter serves as a proxy for commonly utilized electrospray emitters such as needles and capillary tubes. Two solution families are identified for prototype liquid analogous to the ionic liquid 1-ethyl-3-methylimidazolium tetrafluoroborate (EMI-BF4). The first belongs to a regime of low electric field in which the meniscus is blunt and does not emit charge. The second belongs to a regime of high electric field in which a conelike meniscus produces charge from a sharp tip. Electrohydrodynamic features of the meniscus in this regime are presented. These reveal that the meniscus is Stokesian and hydrostatic and governed by conduction. The applied electric field influences both the shape of the meniscus and the current that it produces while the impedance of the feed system - which must be above a threshold value in order to ensure that the current, and therefore the flow, remains below a maximum value - influences the meniscus current but not the macroscopic shape. In general, this shape deviates from Taylor's idealized cone. |
| first_indexed | 2024-09-23T13:19:36Z |
| format | Article |
| id | mit-1721.1/122659 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T13:19:36Z |
| publishDate | 2019 |
| publisher | American Physical Society (APS) |
| record_format | dspace |
| spelling | mit-1721.1/1226592022-10-01T14:31:44Z Electrohydrodynamics of an ionic liquid meniscus during evaporation of ions in a regime of high electric field Coffman, Chase Spenser Martínez-Sánchez, Manuel Lozano, Paulo C Massachusetts Institute of Technology. Department of Aeronautics and Astronautics Numerical investigations are presented for an ionic liquid meniscus undergoing evaporation of ions in a regime of high electric field. A detailed model is developed to simulate the behavior of a stationary meniscus attached to a liquid feed system. The latter serves as a proxy for commonly utilized electrospray emitters such as needles and capillary tubes. Two solution families are identified for prototype liquid analogous to the ionic liquid 1-ethyl-3-methylimidazolium tetrafluoroborate (EMI-BF4). The first belongs to a regime of low electric field in which the meniscus is blunt and does not emit charge. The second belongs to a regime of high electric field in which a conelike meniscus produces charge from a sharp tip. Electrohydrodynamic features of the meniscus in this regime are presented. These reveal that the meniscus is Stokesian and hydrostatic and governed by conduction. The applied electric field influences both the shape of the meniscus and the current that it produces while the impedance of the feed system - which must be above a threshold value in order to ensure that the current, and therefore the flow, remains below a maximum value - influences the meniscus current but not the macroscopic shape. In general, this shape deviates from Taylor's idealized cone. 2019-10-29T21:24:11Z 2019-10-29T21:24:11Z 2019-06 2019-02 2019-10-29T17:40:23Z Article http://purl.org/eprint/type/JournalArticle 2470-0045 2470-0053 https://hdl.handle.net/1721.1/122659 Coffman, Chase S. et al. "Electrohydrodynamics of an ionic liquid meniscus during evaporation of ions in a regime of high electric field." Physical Review E 99, 6 (June 2019): 063108 © 2019 American Physical Society en http://dx.doi.org/10.1103/physreve.99.063108 Physical Review E Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society (APS) APS |
| spellingShingle | Coffman, Chase Spenser Martínez-Sánchez, Manuel Lozano, Paulo C Electrohydrodynamics of an ionic liquid meniscus during evaporation of ions in a regime of high electric field |
| title | Electrohydrodynamics of an ionic liquid meniscus during evaporation of ions in a regime of high electric field |
| title_full | Electrohydrodynamics of an ionic liquid meniscus during evaporation of ions in a regime of high electric field |
| title_fullStr | Electrohydrodynamics of an ionic liquid meniscus during evaporation of ions in a regime of high electric field |
| title_full_unstemmed | Electrohydrodynamics of an ionic liquid meniscus during evaporation of ions in a regime of high electric field |
| title_short | Electrohydrodynamics of an ionic liquid meniscus during evaporation of ions in a regime of high electric field |
| title_sort | electrohydrodynamics of an ionic liquid meniscus during evaporation of ions in a regime of high electric field |
| url | https://hdl.handle.net/1721.1/122659 |
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