用针尖增强拉曼光谱法探测大面积石墨烯中的双层晶粒边界。
Probing Bilayer Grain Boundaries in Large-Area Graphene with Tip-Enhanced Raman Spectroscopy.
机构信息
Department of Physics, Department of Chemistry, and JILA, University of Colorado, Boulder, CO, 80309, USA.
Department of Chemistry, University of North Carolina, Chapel Hill, NC, 27599, USA.
出版信息
Adv Mater. 2017 Feb;29(7). doi: 10.1002/adma.201603601. Epub 2016 Dec 9.
PMID:27935201
Abstract
The bilayer grain boundaries (GBs) in chemical-vapor-deposition-grown large-area graphene are identified using multispectral tip-enhanced Raman imaging with 18 nm spatial resolution. The misorientation angle of the bilayer GBs is determined from a quantitative analysis of the phonon-scattering properties associated with the modified electronic structure.
摘要
利用具有 18nm 空间分辨率的多光谱尖端增强 Raman 成像，识别了化学气相沉积生长的大面积石墨烯中的双层晶界（GB）。通过对与修饰电子结构相关的声子散射特性的定量分析，确定了双层 GB 的取向角。
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