Fig. 2. TEM images of SMA-NR16 and SMA-BER: (A) image of SMA-NR16 taken with magnification set at 15 000×; (B) image of SMA-BER taken with magnification set at 8000×; (C) image of SMA-NR16 taken with magnification set at 10 000×; image of SMA-BER taken with magnification set at 10 000×.