Figure 7.

(a) Photograph showing the fully fabricated sensor with 3 × 3 array (top) and unit cell (bottom); (b) real applications of the device using normal force, shear force, and N₂ flow (reprinted with permission for Figure 7a,b from Ref. [67] Copyright 2014 American Chemical Society); (c) schematic illustration demonstrating the unit cell of the flexible microfluidic tactile sensor, and working principle; (d) illustration of texture sensing experiment and related output performances (rounded edges, softer material, and 80 μm) (reprinted with permission for Figure 7c,d from Ref. [72] Copyright 2017 John Wiley and Sons).