Dynamic magnetic fields transform pivoting H₂SiO₃ particles to hollow microspheres with nanofibrous interior.

ABSTRACT: Reorganizing the internal structures of hollow microspheres after shell sealing, without damaging the shell, remains a major challenge. Here, we show a dynamic magnetic field fluxes stirring (DMFFS) technology that can transform H₂SiO₃ particle to a sealed SiO₂ hollow microsphere with fibrous interior within 30 s. The fibrous structure is composed of SiO₂ micro-nano fibers (MNF). As dynamic magnetic field drives the SiO₂ particles to rotate, the rotated SiO₂ particles become magnetized along the rotation axis according to the Barnett effect. Magnetized SiO₂ interacts with magnetic field to form fibers. This MNF-structured microsphere exhibits low density (0.1 g cm^-3), high transparency (ca. 8

SUBMITTER: Qiao X 

PROVIDER: S-EPMC12804902 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature