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. Author manuscript; available in PMC: 2017 Nov 6.
Published in final edited form as: Anal Chem. 2016 Jun 27;88(14):7302–7311. doi: 10.1021/acs.analchem.6b01655

Figure 4.

Figure 4

Edge-profile analysis across multiple rising and falling edge profiles of known spacings. (a) Crystal violet pattern prior to laser ablation. Each crystal violet line is 100 μm wide; the gaps between the lines are 160, 180, and 200 μm from left to right. Beam focus and power settings were adjusted manually for each of the three experiments. (b) Beam focus = “ultra”; σ = 16.4 μm. (c) Beam focus = “medium”; σ = 13.1 μm. (d) Beam focus = “small”; σ = 5.4 μm. Fits are to eq 1 to provide measurements of σ.