Figure 2
From: Low-cost and cleanroom-free fabrication of microneedles
(a) The depth of the engraving with certain power and speed of CO2 laser, (b) different size of needles resulted from different settings of laser power and speed and (c) different height and tip angle of the needles, depending on the speed (first number in the legend) and length of lines in millimeter (second number in the legend after dash). Error bar plot extracted from 10 different samples.
