fig9

From: Flexible iontronic pressure sensing technology: advanced structural ionic layer

Figure 9. Irregular structure. (A) The iontronic pressure sensor with a sandpaper reverse-molded random graded intrafillable architecture ionic layer. Reproduced with permission^[10]. Copyright 2020, Springer Nature; (B) A random convex and randomly wrinkled structured ionic film. Reproduced with permission^[161]. Copyright 2023, American Chemical Society. CRWM: Concave randomly wrinkled microstructure; CM: convex microstructure; CWM: concave wrinkled microstructure.