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The distribution of the bi-layer (in green) and a multi-layer (in red) are easily obtained using the Classical Least Squares (CLS) fitting function of LabSpec software, to fit the spectra to user-selected “pure” spectra. Because the D band was also detected at some edges, a third spectrum representing that species was also used to fit the map (in pink).
石墨烯，最先由2004年《科学》杂志报道的新型先进材料，是由单分子层高结晶石墨所构成。石墨烯是一些碳同素异形体的基本结构，包括石墨、碳纳米管和富勒烯。
区分石墨烯层数以及量化无序对其性能的影响对于石墨烯基器件的研究至关重要。显微拉曼光谱已被证明是测定这两种性质的方便而可靠的技术。
拉曼光谱因其具有高结构选择性，结合高光谱分辨率和空间分辨率以及该技术的非破坏性，使其成为石墨烯快速发展领域中理想的标准表征工具。
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