Toroidal polar topology in strained ferroelectric polymer

doi:10.1126/science.abc4727

GSTDTAP > 气候变化

DOI	10.1126/science.abc4727
	Toroidal polar topology in strained ferroelectric polymer
	Mengfan Guo; Changqing Guo; Jian Han; Shulin Chen; Shan He; Tongxiang Tang; Qian Li; Joseph Strzalka; Jing Ma; Di Yi; Ke Wang; Ben Xu; Peng Gao; Houbing Huang; Long-Qing Chen; Shujun Zhang; Yuan-Hua Lin; Ce-Wen Nan; Yang Shen
	2021-03-05
发表期刊	Science
出版年	2021
英文摘要	Polymer-based ferroelectric materials are attractive because they can be solution processed cheaply and have much greater flexibility than ceramics. Guo et al. found concentric circular bands of polarization in a ferroelectric polymer that look like a bull's-eye target (see the Perspective by Martin). This self-organized toroidal texture is aligned perpendicularly to the axis of the polymer chains, allowing the authors to demonstrate selective absorption of infrared radiation and manipulation of terahertz radiation. This distinct structure in a polymer could be of interest for exploring and using other exotic effects. Science , this issue p. [1050][1]; see also p. [992][2] Polar topological texture has become an emerging research field for exotic phenomena and potential applications in reconfigurable electronic devices. We report toroidal topological texture self-organized in a ferroelectric polymer, poly(vinylidene fluoride- ran -trifluoroethylene) [P(VDF-TrFE)], that exhibits concentric topology with anticoupled chiral domains. The interplay among the elastic, electric, and gradient energies results in continuous rotation and toroidal assembly of the polarization perpendicular to polymer chains, whereas relaxor behavior is induced along polymer chains. Such toroidal polar topology gives rise to periodic absorption of polarized far-infrared (FIR) waves, enabling the manipulation of the terahertz wave on a mesoscopic scale. Our observations should inform design principles for flexible ferroic materials toward complex topologies and provide opportunities for multistimuli conversions in flexible electronics. [1]: /lookup/doi/10.1126/science.abc4727 [2]: /lookup/doi/10.1126/science.abg4477
领域	气候变化 ; 资源环境
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/317004
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Mengfan Guo,Changqing Guo,Jian Han,et al. Toroidal polar topology in strained ferroelectric polymer[J]. Science,2021.
APA	Mengfan Guo.,Changqing Guo.,Jian Han.,Shulin Chen.,Shan He.,...&Yang Shen.(2021).Toroidal polar topology in strained ferroelectric polymer.Science.
MLA	Mengfan Guo,et al."Toroidal polar topology in strained ferroelectric polymer".Science (2021).