Fig. 4.

Effect of antialiasing on microneedle geometry a-c) Microneedles fabricated without antialiasing a) Cross section of a stack of image slices representing two microneedles projected without antialiasing. The cross section is taken at the center of the needle. b Low magnification and c) high magnification of microneedles fabricated without antialiasing. d-f Microneedles fabricated with PrintStudio’s default antialiasing algorithm. d) Cross section of a stack of image slices representing two microneedles projected with PrintStudio’s default antialiasing algorithm. The cross section is taken at the center of the needle. e Low magnification and f) high magnification of microneedles fabricated with PrintStudio’s default antialiasing algorithm. g-i Microneedles fabricated with optimized antialiasing g) Cross section of a stack of image slices representing two microneedles projected with an optimized antialiasing algorithm. The cross section is taken at the center of the needle. h Low magnification and i) high magnification of microneedles fabricated with optimized antialiasing