期刊
PHYSICAL REVIEW RESEARCH
卷 2, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevResearch.2.042008
关键词
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资金
- European Unions Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie Grant [722497]
- Novo Nordisk Foundation [NNF18SA0035142]
- Villum Fonden [29476]
- Danish Council for Independent Research, Natural Sciences [DFF-117155-1001]
- European Unions Horizon 2020 research and innovation program under the Marie Sklodowska-Curie Grant [847523]
We report on the emergence of stable self-propelled bound defects in monolayers of active nematics, which form virtual full-integer topological defects in the form of vortices and asters. Through numerical simulations and analytical arguments, we identify the phase space of the bound defect formation in active nematic monolayers. It is shown that an intricate synergy between the nature of active stresses and the flow-aligning behavior of active particles can stabilize the motion of self-propelled positive half-integer defects into specific bound structures. Our findings therefore, uncover conditions for the formation of full integer topological defects in active nematics with the potential for triggering further experiments and theories.
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