Supertwisted spirals of layered materials enabled by growth on non-Euclidean surfaces

doi:10.1126/science.abc4284

GSTDTAP > 气候变化

DOI	10.1126/science.abc4284
	Supertwisted spirals of layered materials enabled by growth on non-Euclidean surfaces
	Yuzhou Zhao; Chenyu Zhang; Daniel D. Kohler; Jason M. Scheeler; John C. Wright; Paul M. Voyles; Song Jin
	2020-10-23
发表期刊	Science
出版年	2020
英文摘要	The growth of layered materials on flat substrates usually occurs in stacked layers, although defects or a lattice mismatch can induce strains that distort the shape of subsequent layers. However, these effects are usually small and can be uncontrolled. Zhao et al. now demonstrate the possibility of synthesizing multilayers of two-dimensional materials with certain twists between the layers induced by the presence of screw dislocations in combination with curved substrate surfaces. Different twist angles are achieved by varying the amount of nonplanarity and the character (conical or hyperbolic) of the surface. Science , this issue p. [442][1] Euclidean geometry is the fundamental mathematical framework of classical crystallography. Traditionally, layered materials are grown on flat substrates; growing Euclidean crystals on non-Euclidean surfaces has rarely been studied. We present a general model describing the growth of layered materials with screw-dislocation spirals on non-Euclidean surfaces and show that it leads to continuously twisted multilayer superstructures. This model is experimentally demonstrated by growing supertwisted spirals of tungsten disulfide (WS2) and tungsten diselenide (WSe2) draped over nanoparticles near the centers of spirals. Microscopic structural analysis shows that the crystal lattice twist is consistent with the geometric twist of the layers, leading to moiré superlattices between the atomic layers. [1]: /lookup/doi/10.1126/science.abc4284
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/300293
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Yuzhou Zhao,Chenyu Zhang,Daniel D. Kohler,et al. Supertwisted spirals of layered materials enabled by growth on non-Euclidean surfaces[J]. Science,2020.
APA	Yuzhou Zhao.,Chenyu Zhang.,Daniel D. Kohler.,Jason M. Scheeler.,John C. Wright.,...&Song Jin.(2020).Supertwisted spirals of layered materials enabled by growth on non-Euclidean surfaces.Science.
MLA	Yuzhou Zhao,et al."Supertwisted spirals of layered materials enabled by growth on non-Euclidean surfaces".Science (2020).