Fig. 5. Characterization of fresh (48 hours old) silver nanoparticles synthetized using S. asoca leaf extract (a) TEM image of spherical nanoparticles with the size of 10–25 nm; scale bar is 100 nm, (b) HR-TEM image of spherical nanoparticles; scale bar is 10 nm, inset shows the SAED pattern of silver, (c) histogram analysis of particle size distribution of AgNPs from TEM measurements (histogram was generated by analyzing multiple images acquired from the freshly synthesized AgNPs).