Inversion Ring in Chromonic Twisted Hedgehogs: Theory and Experiment
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arXiv
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| Autores principales: | , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866911749088739328 |
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| author | Ciuchi, Federica De Santo, Maria Penelope Paparini, Silvia Spina, Lorenza Virga, Epifanio G. |
| author_facet | Ciuchi, Federica De Santo, Maria Penelope Paparini, Silvia Spina, Lorenza Virga, Epifanio G. |
| contents | Twisted hedgehogs are defects in spherical cavities with homeotropic anchoring for the nematic director that arise when twist distortions are sufficiently less energetic than splay (and bend) distortions. They bear a characteristic inversion ring, where the director texture changes the sense it spirals about the center of the cavity. This paper applies a quartic twist theory recently proposed to describe the elasticity of chromonics to explain a series of inversion rings observed in aqueous solutions of SSY at two different concentrations. The theory features a phenomenological length a, whose measure is extracted from the data and shown to be fairly independent of the cavity radius, as expected for a material constant. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_02893 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Inversion Ring in Chromonic Twisted Hedgehogs: Theory and Experiment Ciuchi, Federica De Santo, Maria Penelope Paparini, Silvia Spina, Lorenza Virga, Epifanio G. Soft Condensed Matter Mathematical Physics Twisted hedgehogs are defects in spherical cavities with homeotropic anchoring for the nematic director that arise when twist distortions are sufficiently less energetic than splay (and bend) distortions. They bear a characteristic inversion ring, where the director texture changes the sense it spirals about the center of the cavity. This paper applies a quartic twist theory recently proposed to describe the elasticity of chromonics to explain a series of inversion rings observed in aqueous solutions of SSY at two different concentrations. The theory features a phenomenological length a, whose measure is extracted from the data and shown to be fairly independent of the cavity radius, as expected for a material constant. |
| title | Inversion Ring in Chromonic Twisted Hedgehogs: Theory and Experiment |
| topic | Soft Condensed Matter Mathematical Physics |
| url | https://arxiv.org/abs/2401.02893 |