Fig. 3From: Nanodiamond enhanced mechanical and biological properties of extrudable gelatin hydrogel cross-linked with tannic acid and ferrous sulphateTEM image of (a) nanodiamond dispersed in gelatin, (b) high magnification showing cluster of ND, (c) SAED pattern with index; SEM images of dried cross section of (d) Gel-ND 0, (e) Gel-ND 4; (f) XRD and (g) FTIR spectra of different raw materials and synthesized samples. Gel: gelatin, TA: Tannic acid, ND: nanodiamondBack to article page