Figure : a-b) Optical micrographs of photocatalytically patterned rGO/GO: a) checkerboard pattern and b) meander pattern. c) IV-curves of a (GO/rGO)/TNR film measured after DUV illumination (1 h) through a mask producing conductive rGO stripe patterns connecting the IDEs (blue) and not connecting the electrode fingers (red). The insets show photographs of the respective stripe patterns and the electrode fingers. d) Fabrication process of photocatalytically patterned (GO/rGO)/TNC sensors on PI substrates equipped with IDEs. e) Baseline-corrected relative conductance change of (GO/rGO)/TNP-(blue) and (GO/rGO)/TNR (orange) films (four LbL-SC cycles) with adjusted degree of reduction to transient (4 min) variations in r.h. from a baseline humidity of ∼37%. All measurements were conducted at room temperature. f) Response isotherms of the TNP-L (30 min DUV exposure) sensor (blue) and the GO-R (120 min DUV exposure) reference sensor (gray), and g) respective transient responses to 74% r.h. used to extract the response times. h,j) Realtime body-related humidity sensing using the TNP-L sensor for h) the detection of finger approximation at varying distances (∼0.5 cm distance to the substrate), i) determination of a healthy breathing rate when breathing in close proximity to the sensor, and j) detection of an interrupted breathing pattern.