Figure 1.

Effects of size on the plasmon band. (A) TEM images of SNPs of 10 (a), 20 (b), and 20–30 (c) nm. (B) UV-Vis spectra of the SNPs shown in (A). (C) TEM images of GNPs with aspect ratios of 2.4 (a), 2.7 (b), 3.6 (c), 4.4 (d), and 6.1 (e), scale bars are 150 nm. (D) UV-Vis spectra of the GNPs shown in (C). TEM images with their respective spectra were adapted with permission from: (A)(a) Adapted with permission from Liu P, Huang Z, Chen Z, et al. Silver nanoparticles: a novelradiation sensitizer for glioma? Nanoscale. 2013;5(23):11829. Copyright 2013, Royal Society of Chemistry⁸; (A)(b) Adapted from Nakkala JR, Mata R, Raja K, Khub Chandra V, Sadras SR. Green synthesized silver nanoparticles: catalytic dye degradation,in vitro anticancer activity and in vivo toxicity in rats. Mat SciEng C. 2018;91:372–381.Copyright 2018, with permission from Elsevier.⁹; (A)(c) Adapted from Khan I, Bahuguna A, Krishnan M, et al. The effect of biogenicmanufactured silver nanoparticles on human endothelial cells andzebrafish model. Sci Total Environ. 2019;679:365–377. Copyright 2019, with permission from Elsevier¹⁰; and (C)(a-e) Adapted with permission from Hinman JG, Stork AJ, Varnell JA, Gewirth AA, Murphy CJ. Seedmediated growth of gold nanorods: towards nanorodmatryoshkas. Faraday Discuss. 2016;191:9–33. Copyright 2016, Royal Society of Chemistry¹¹ respectively.