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Relationship between incident light and SWNT forest. (A and B) Schematic diagrams illustrating the interaction between incident light and SWNT forest (A) and individual SWNT (B). RI and R denote refractive index and reflectance, respectively. (C) Specular reflectance as a function of incident angle. Measurement with nonpolarized light with the wavelength ≈5 μm.
