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Figure 2. Sensor arrays with different work mechanisms and material components. (A) PDA@ZnO-based piezoelectric sensor array. Reproduced with permission[49]. Copyright 2024 Elsevier. PVDF-based piezoelectric sensor array. Reproduced with permission[50]. Copyright 2019 Elsevier; (B) CNTs/PDMS-based piezoresistive sensor array[57]. Reproduced with permission. Copyright 2016 Springer Nature. Graphene-oxide-based piezoresistive sensor array. Reproduced with permission[58]. Copyright 2019 ACS Publications; (C) Polyurethane sponge-based capacitance sensor array. Reproduced with permission[59]. Copyright 2025 OAE Publishing. Porous PDMS-based capacitance sensor array. Reproduced with permission[60]. Copyright 2021 Elsevier; (D) PTFE-based triboelectric sensor array. Reproduced with permission[64]. Copyright 2020 Wiley-VCH. HDPE/PEO-based array. Reproduced with permission[65]. Copyright 2024 Elsevier; (E) AgNFs-AgNWs-based integrated multimodal sensor array. Reproduced with permission[70]. Copyright 2018 Springer Nature. BaTiO3/PVDF-based coupled multimode sensor array. Reproduced with permission[71]. Copyright 2025 Elsevier. PDA@ZnO: Polydopamine-modified zinc oxide; PVDF: polyvinylidene fluoride; CNTs: carbon nanotubes; PDMS: polydimethylsiloxane; AgNFs: silver nanofibers; AgNWs: silver nanowires; PTFE: polytetrafluoroethylene; HDPE: high-density polyethylene; PEO: polyoxyrthylene; PVC: polyvinyl chloride; PI: polyimide.
