fig5

Figure 5. Multi-mode tactile sensors. (A) Schematic illustrations of the structure and sensitivity (sensing range 0-12 kPa) of a dual-mode sensor. Reproduced with permission from Ref.^[88]. Copyright^© 2020. Elsevier. (B) Schematic diagram and current versus time of the transparent dual-mode sensor, which can distinguish touch and pressure. Reproduced with permission from Ref.^[89]. Copyright^© 2019. Springer Nature. (C) The current response to temperature and strain stimulus respectively. Reproduced with permission from Ref.^[90]. Copyright^© 2021. American Chemical Society. (D) Characteristics of multimodal sensor and its responses to heating and stretching without signal interference. Reproduced with permission from Ref.^[91]. Copyright^© 2020. The American Association for the Advancement of Science. (E) Multiple stimulus responses including test strain, temperature, light, body movement, and respiratory functions. Reproduced with permission from Ref.^[21]. Copyright^© 2020. Springer Nature.