We report a comparative study of the Raman and Coherent anti-Stokes Raman scattering (CARS) patterns of DNA molecules deposited on graphene or glass substrates. In the DNA CARS spectra, the positions of vibrational resonances are red-shifted by 10–20 cm⁻¹ and have new features in high-frequency region in comparison with spontaneous Raman data. We demonstrate that CARS imaging can be employed for the visualization and characterization of DNA molecules deposited on graphene.

中文翻译：

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相干抗焦炭拉曼散射光谱（CARS）以及石墨烯层和玻璃盖上的DNA成像

我们报告了沉积在石墨烯或玻璃基板上的DNA分子的拉曼和相干反斯托克斯拉曼散射（CARS）模式的比较研究。在DNA CARS光谱中，与自发拉曼数据相比，振动共振的位置发生了10-20 cm ^-1的红移，并且在高频区域具有新特征。我们证明，CARS成像可用于可视化和表征沉积在石墨烯上的DNA分子。