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Figure 4 | Nanoscale Research Letters

Figure 4

From: Metal-particle-induced enhancement of the photoluminescence from biomolecule-functionalized carbon nanotubes

Figure 4

Photoluminescence and Raman spectra of the RNA-functionalized SWCNTs before and after adding metal particles. PL spectra show substantial enhancement after adding (a) gold, (b) cobalt, and (c) nickel particles. Raman spectra do not show any change after adding (d) gold, (e) cobalt, and (f) nickel particles. Excitation laser wavelength was 514 nm for (a, b, d, and e) and 532 nm for (c and f). All the ‘after’ spectra were taken 180 min after adding metal particles.

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