Figure 3 | Light: Science & Applications

Figure 3

From: Optical visualization and polarized light absorption of the single-wall carbon nanotube to verify intrinsic thermal applications

Figure 3

(a) High-resolution transmission electron microscopy images of two individual SWCNT with diameters of 2.22 and 2.98 nm. The wall numbers and diameter of all samples were determined from the ED pattern and verified using the HRTEM image. (b–c) Standard and experimental ED pattern of a (21,4) nanotube. (d) D and G bands of the Raman spectra for the (21,4) nanotube, which was excited by 514 nm laser with high and low intensity. The negligible D band at approximately 1320 cm−1 illustrates the perfect crystalline of the as-grown suspended ultra-long SWCNT. All peaks were fitted by a Lorentzian curve to distinguish the G band frequency and heat-induced red-shift (inset). Raman spectra of the ice O-H stretching vibration mode.

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