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Quantum rods. (A) Schematic of a synthesized CdSe/CdS Q rod. (B) Transmission electron microscopy image of Q rods. The Q rod has an aspect ratio of 13∶1. (C) Luminescence images of a single Q rod simultaneously recorded in two perpendicular polarization directions at detection angles ranging from 0° to 160°. (D) The intensity ratio, r = (I // -I⊥)/(I // +I⊥), for the luminescence images in (C) (blue dots) fitted with a sinusoidal function (red line).
