fig4

Figure 4. Inkjet printing fabrication technology on micro-cylindrical surfaces. (A) Extrusion-based inkjet printing for customizable path fabrication. Reproduced with permission^[15]. Copyright 2023, Elsevier; (B) Spiral ink writing on micro-cylindrical surfaces. Reproduced with permission^[29]. Copyright 2023, Springer Nature; (C) (i) Schematic illustration of the LAJ printing process. (ii) Step-by-step fabrication workflow of a graphene sensor on a catheterized balloon. Reproduced with permission^[91]. Copyright 2024, Springer Nature; (D) Microscale printing based on electric field-driven jet. Reproduced with permission^[89]. Copyright 2022, Springer Nature; (E) Electric field-driven printing with a pre-set eccentricity strategy. Reproduced with permission^[14]. Copyright 2023, Elsevier. LAJ: Lathe-based aerosol jet.