Hydroxyapatite Nanopowder Synthesis with a Programmed Resorption Rate

Figure 5

SEM micrographs of GoHAP synthesized in (a) 1.5-minute reaction, (b) 2.5-minute reaction, (c) 5.0-minute reaction, and (d) 10.0-minute reaction.

(a)

(b)

(c)

(d)