Fig. 6: Raman spectra and FESEM images of CNT-bots.
From: Multimodal chemo-/magneto-/phototaxis of 3G CNT-bots to power fuel cells
Images a and c show the Raman spectra and FESEM images of pristine –COOH-substituted MWCNTs. Images b and d show the same Fe2+-doped –COOH-substituted MWCNTs.
