FIGURE 8.

(A) Top and lateral views of three prototypes printed in Visijet M3 Crystal having different sizes. The “large” system has a diameter of 25 mm and a height of 22 mm, the “medium” one has a square base of 20 mm and a height 10 mm, while the “small” one has a rectangular base of 10 × 20 mm and a height of 10 mm). (B) Comparison between three scaled geometries (here called “large,” “medium,” and “small”) of the PDDS described in the paper. (C) Results obtained from FEM simulations in terms of displacement of the sliding top following the application of 0.025, 0.05, 0.075, and 0.1 N. In the smaller device the displacement is equal to the larger one, instead in the medium device it is slightly lower in correspondence to the same forces applied (a displacement of around 3.3 mm in the larger and smaller device and 2.7 mm in the medium one is obtained with a 0.1 N force).