材料科学
等离子体子
纳米棒
圆二色性
纳米技术
纳米线
纳米结构
纳米工程
各向异性
纳米尺度
手性(物理)
光电子学
光学
结晶学
物理
化学
夸克
量子力学
手征对称破缺
Nambu–Jona Lasinio模型
作者
Hongliang Hu,Sribharani Sekar,Wenbing Wu,Yann Battie,Vincent Lemaire,Oriol Arteaga,Lisa V. Poulikakos,David J. Norris,Harald Gießen,Gero Decher,Matthias Pauly
出处
期刊:ACS Nano
[American Chemical Society]
日期:2021-08-10
卷期号:15 (8): 13653-13661
被引量:20
标识
DOI:10.1021/acsnano.1c04804
摘要
Chirality is found at all length scales in nature, and chiral metasurfaces have recently attracted attention due to their exceptional optical properties and their potential applications. Most of these metasurfaces are fabricated by top-down methods or bottom-up approaches that cannot be tuned in terms of structure and composition. By combining grazing incidence spraying of plasmonic nanowires and nanorods and Layer-by-Layer assembly, we show that nonchiral 1D nano-objects can be assembled into scalable chiral Bouligand nanostructures whose mesoscale anisotropy is controlled with simple macroscopic tools. Such multilayer helical assemblies of linearly oriented nanowires and nanorods display very high circular dichroism up to 13 000 mdeg and giant dissymmetry factors up to g ≈ 0.30 over the entire visible and near-infrared range. The chiroptical properties of the chiral multilayer stack are successfully modeled using a transfer matrix formalism based on the experimentally determined properties of each individual layer. The proposed approach can be extended to much more elaborate architectures and gives access to template-free and enantiomerically pure nanocomposites whose structure can be finely tuned through simple design principles.
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