SEM photograph of silver nanoparticles.
Farhat Ali Khan, Muhammad Zahoor, Abdul Jalal, Aziz Ur Rahman
CC BY 4.0
Farhat Ali Khan et. al. "Green Synthesis of Silver Nanoparticles by Using Ziziphus nummularia Leaves Aqueous Extract and Their Biological Activities", Journal of Nanomaterials <a rel="nofollow" class="external text" href="https://doi.org/10.1155/2016/8026843">doi:10.1155/2016/8026843</a>