fig3

Figure 3. Sensor arrays with different structure designs. (A) Symmetrical electrode sensor array. Reproduced with permission^[72]. Copyright 2016 ACS Publication; (B) Independent electrode flexible electronics. Reproduced with permission^[73]. Copyright 2022 AAAS; (C) Cross-layer electrode sensor array. Reproduced with permission^[74]. Copyright 2021 Wiley-VCH; (D) Regular microstructure sensor array: micro-dome structure; micropillars structure and micro-pyramid structure, Reproduced with permission^[75-77]. Copyright 2020 Wiley-VCH. Copyright 2014 ACS Publications. Copyright 2024 Wiley-VCH; (E) Bioinspired structure sensor array: cilia-based e-skin and fingerprint microstructures, Reproduced with permission^[78,79]. Copyright 2025 OAE Publishing. Copyright 2018 Springer Nature. PI: Polyimide; MAB e-skin: micropyramid array bimodal electronic skin; e-skin: electronic skin; PDMS: polydimethylsiloxane; PVA: polyvinyl alcohol.