偏斜
拓扑缺陷
拓扑(电路)
非平衡态热力学
活性物质
液晶
转化(遗传学)
物理
经典力学
光学
凝聚态物理
量子力学
化学
数学
基因
组合数学
细胞生物学
生物
生物化学
作者
Jinghua Jiang,Kamal Ranabhat,Xinyu Wang,Hailey Rich,Rui Zhang,Chenhui Peng
标识
DOI:10.1073/pnas.2122226119
摘要
SignificanceTopological defects are marvels of nature. Understanding their structures is important for their applications in, for example, directed self-assembly, sensing, and photonic devices. There is recent interest in active motion and transformation of topological defects in active nematics. In these nonequilibrium systems, however, the motion and transformation of disclinations are difficult to control, thereby hindering their applications. Here, we propose a surface-patterned system engendering periodic three-dimensional disclinations, which can be excited by light irradiation and undergo a programmable transformation between different topological states. Continuum simulations recapitulating these topological structures characterize the bending, breaking, and relinking events of the disclinations during the nonequilibrium process. Our work provides an alternative dynamic system in which active transformation of topological defects can be engineered.
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