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a) Blue dots: Experimentally observed extinction of Raman excitation at 785 nm. Red triangles: Difference in Raman band at 1030 cm−1 shift with neat methanol and each aspect ratio of gold nanorods suspended in methanol. b) Predicted electromagnetic enhancement from varying aspect ratios of spheroids in the quasi static limit. Mean-free electron path and depolarization/radiative damping corrections were applied.
