Fig. 1: The diagram of reconstructing processes.

a MNF: the H2SiO3 particles gradually became an MNF-structured microsphere after dehydration, shell formation, and reconstruction. The size of the MNF-structured microsphere reached its maximum at 30 s and the shell turned to be transparent. The time from MC20 microsphere to MNF-structured microsphere was only 10 s. b NF: the MC20 structure was reconstructed further within 30 s at 20 A (AC) by refining the internal fibers into nanofibers. The time from MC20 microsphere to NF-structured microsphere was 30 s.