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Dipolar particles trapped in a cylindrical pore
- Source :
- EPL-Europhysics Letters, EPL-Europhysics Letters, 2023, 141 (6), pp.67001. ⟨10.1209/0295-5075/acc12a⟩
- Publication Year :
- 2023
- Publisher :
- IOP Publishing, 2023.
-
Abstract
- A salient effect of strong confinement, especially when quasi one-dimensional, is to drastically alter the phase behavior and concomitantly the physico-chemical properties of a substance encountered in the bulk. The ground state phase diagram of dipolar hard spheres of diameter d as a function of the pore opening , with D being the cylinder diameter of the confining pore, is investigated theoretically. Whereas finding the densest configurations with hard spheres would be a purely geometrical problem, the situation becomes much more intricate with long-ranged anisotropic interactions. As a major finding, long pores prohibit chain undulation (helicity) and wall-contact–free (floating) linear chain bundles emerge. These results shed light on recent experimental observations with magnetic colloids in microtubes. Applications in other fields are discussed as well.
Details
- ISSN :
- 12864854 and 02955075
- Volume :
- 141
- Database :
- OpenAIRE
- Journal :
- Europhysics Letters
- Accession number :
- edsair.doi.dedup.....7cd32d4aacbec05c3ccd816d71ba54fd