Fig. 3

(A, B, and C) are SEM images of CTC, CTC/R, and CTC/W, respectively. (D, E, and F) are TEM images of CTC, R, and W, respectively.

(A, B, and C) are SEM images of CTC, CTC/R, and CTC/W, respectively. (D, E, and F) are TEM images of CTC, R, and W, respectively.