Fig. 4: Plots of LR and [Cu] leached as a function of SiO2 thickness and fluorosilane concentration.
From: Towards transparent and durable copper-containing antimicrobial surfaces

TANCSs were treated with 50 W and 300 W oxygen plasma in (a) and (b) respectively. Error bars represent the standard deviation of two samples. Note that in some cases, the error bar is smaller than the marker and not visible.