Various LIG-based mechanical sensors. (a) The normalized resistance of the LIG-based waterproof wearable sensors versus the various tensile strains at a fixed strain rate. Reprinted with permission from Ref. [84], Copyright 2018, Wiley-VCH. (b) The normalized resistance variation of LIG-based gas-permeable on-skin sensor in a typical stretch/release cycle. Reprinted with permission from Ref. [83], Copyright 2018, Wiley-VCH. (c) LIG-based artificial throat with the ability of emitting and detecting sound. Reprinted with permission from Ref. [16], Copyright 2017, Springer Nature. (d) Schematic of the prepared LIG-based fiberglass sample for fatigue damage tracking. Reprinted with permission from Ref. [96], Copyright 2021, Elsevier B.V. (e) Puncture sensing arrays based on Laminated LIG Composites. Reprinted with permission from Ref. [88], Copyright 2020, American Chemical Society. (f) LIG-based waterproof capacitance pressure sensor. Reprinted with permission from Ref. [84], Copyright 2018, Wiley-VCH. (g) The relative resistance variation of LIG-based pressure sensor induced by touch from the index finger. Reprinted with permission from Ref. [37], Copyright 2020, Wiley-VCH. (h) Gesture recognition by LIG-based curvature sensor. Reprinted with permission from Ref. [78], Copyright 2016, Elsevier B.V. (i) The response of the LIG-based bending sensor to different flow velocities. Reprinted with permission from Ref. [95], Copyright 2019, Springer Nature.