Characterization of bacteriophage-governed mesoporous silica fibers (OU-880). a, SEM images of OU-880 with a range of the length from several to ten micrometers. Inset shows the high resolution SEM image of OU-880, indicating that the large fibers were indeed bundles of small uniform nanofibers with diameter of 70-80 nm. b and c, High resolution TEM image of as-synthesized (b) and calcined (c) OU-880, respectively. d, SAXS pattern of the as-synthesized and calcined mesoporous silica fibers (OU-880). e and f, Cross-sectional TEM images of the as-synthesized (e) and calcined, TEM images of the formed bacteriophage bundles (f) OU-880. g induced by APTES interactions. Inset shows the corresponding high magnification TEM image.