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Surface anchoring as a control parameter for stabilizing torons, skyrmions, twisted walls, fingers and their hybrids in chiral nematics | | Jung-Shen B. Tai
; Ivan I. Smalyukh
; | | Date: |
18 Nov 2019 | | Abstract: | Chiral condensed matter systems, such as liquid crystals and magnets, exhibit
a host of spatially localized topological structures that emerge from the
medium’s tendency to twist and its competition with confinement and field
coupling effects. We show that the strength of perpendicular surface boundary
conditions can be used to control the structure and topology of solitonic and
other localized field configurations. By combining numerical modeling and
three-dimensional imaging of the director field, we reveal structural stability
diagrams and inter-transformation of twisted walls and fingers, torons and
skyrmions and their crystalline organizations upon changing boundary
conditions. Our findings provide a recipe for controllably realizing skyrmions,
torons and hybrid solitonic structures possessing features of both of them,
which will aid in fundamental explorations and technological uses of such
topological solitons. Moreover, with limited examples, we discuss how similar
principles can be systematically used to tune stability of twisted walls versus
cholesteric fingers and hopfions versus skyrmions, torons and twistions. | | Source: | arXiv, 1911.7829 | | Services: | Forum | Review | PDF | Favorites | |
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