Fig. 5.

(i) (a) Photo showing the glucose sensor worn on the skin with sweat. (b) Performance of the proposed glucose sensor amounted on the arm under distinct mechanical deformation. Inset is the corresponding photographs under distinct mechanical deformation with the scale bar of 1 ​cm (82). (ii) Optical images showing the structure of the f-ES glucose sensor and the pattern of the sensor with a ruler to show its scale (83). (iii) Photographs indicating the stretchable wearable non-invasive glucose sensing patch integrated with microfluidic which are worn on the forehead (left) and arm (right) (86). (iv) (a) Photograph illustrating the flexible glucose detection patch with a waterproof band and a sweat-uptake layer. (Inset: Enlarged image of the porous sweat-uptake layer. (b) Photograph showing the flexible glucose detection sensor under deformation with no delamination. (c) Photograph indicating the disposable perspiration detection strip attached to the arm with sweat (87). (v) (a) Optical image showing wearable non-invasive glucose sensing patch amounted on human skin; (b) Optical image of the glucose sensing patch under deformation (88). (vi) SEM images of the working electrode decorated with MNDP gold by electrodeposition technique. The inset is a magnified view of the MNDP gold (89). (vii) Optical image indicating the wearable non-invasive glucose sensor under folding (91).