Fig. 8.

(i) Optical image showing the miniaturized wearable glucose sensing patch based on CuO/LSG worn on (a) nail, (b) nose, and (c) forehead (109). (ii) (a) The wearable non-invasive glucose sensing patch laminated on the skin of a runner at distinct parts of the body to detect the components of sweat and monitor the physical state of users. Digital photograph showing (b) structure of wearable sensing patch and a human wrist with the sensor amounted on it (110). (iii) Schematic illustrating the miniaturized wearable glucose sensing patch amounted on human skin (111). (iv) Optical image and schematic diagram representing the structure of wearable versatile sensing patch which are attached on the wrist (112). (v) Conceptual image showing the working principle of a self-powered wearable glucose sensing system including a supercapacitor, portable working station, glucose sensor, and a smartphone to receive the glucose concentration data ([113]).