Figure 4: Efficiencies of oil collection on PDMS needle arrays. | Nature Communications

Figure 4: Efficiencies of oil collection on PDMS needle arrays.

From: Structured cone arrays for continuous and effective collection of micron-sized oil droplets from water

Figure 4

(a) Efficiencies of needle arrays with different needle separations. The three inset SEM images are the arrays with needle separations of 0.50, 0.35, and 0.25 mm. A larger needle density provided a higher efficiency. (b) Efficiencies of needle arrays with different heights. The three inset SEM images are the arrays with heights of 0.0, 0.3, and 0.5 mm. Higher needles provided a larger efficiency. Each point represents the average efficiency of seven samples; the error bars indicate the standard deviation.

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