| Title: | Fingered core structure of nematic boojums |
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| Authors: | ID Kralj, Samo (Author)
ID Rosso, Riccardo (Author)
ID Virga, Epifanio Giovanni (Author) |
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| Files: |  http://dx.doi.org/10.1103/PhysRevE.78.031701
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| Language: | English |
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| Work type: | Unknown |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FNM - Faculty of Natural Sciences and Mathematics
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| Abstract: | Using the Landau-de Gennes phenomenological approach, we study the fine biaxial core structure of a boojum residing on the surface of a nematic liquid crystal phase. The core is formed by a negatively uniaxial finger, surrounded by a shell with maximal biaxiality. The characteristic finger's length and the shell's width are comparable to the biaxial correlation length. The finger tip is melted for topological reasons. Upon decreasing the surface anchoring strength below a critical value, the finger gradually leaves the bulk and it is expelled through the surface. |
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| Keywords: | physics, liquid crystals, nematic crystals, line defects, surface phenomena |
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| Year of publishing: | 2008 |
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| PID: | 20.500.12556/DKUM-35736  |
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| UDC: | 532.783 |
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| ISSN on article: | 1539-3755 |
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| COBISS.SI-ID: | 16177416 |
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| NUK URN: | URN:SI:UM:DK:XR0EGW5R |
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| Publication date in DKUM: | 07.06.2012 |
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| Views: | 2110 |
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| Downloads: | 112 |
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| Metadata: |    |
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| Categories: | Misc.
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