Fig. 3: The effect of the Al2O3@CNTs on the conformational transition of the nanocomposites.

a Raman spectra of the Al2O3@CNTs, pure RT-TS, and the nanocomposite with Al2O3@CNTs. b–d The distribution of the Raman intensity at 1588 cm−1, 847 cm−1, and 812 cm−1 of R-RT-TS (b), V-RT-TS (c), and H-RT-TS (d) samples. The area enclosed by the dashed line indicates the region with a higher concentration of Al2O3@CNTs than that in the other areas (for b–d). e The schematic diagram of the effect of the Al2O3@CNTs on the conformational transition under an electric field.