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. 2020 May 19;10:8217. doi: 10.1038/s41598-020-64773-z

Figure 5.

Figure 5

Absorbance spectra of supernatant fs laser ablation Ag colloids for as-prepared sample and different centrifugation times. Inset depicts the absorption spectrum of the colloid centrifuged for 1000 min appropriately rescaled to show the bands related to the presence of clusters of few atoms in the range 200 nm – 300 nm.