Fig. 5: Sensing performance of the floating-structured H2 sensor embedded with C10 SAM layer.
From: Interfacial stress decoupling enables stable palladium-based hydrogen sensing
a Dynamic response and recovery profiles across H2 concentrations from 1 ppm to 4 vol% H2. b Concentration-dependent H2 sensitivity extracted from (a). The analytical fit line is based on the function y = 2.91 × 10−5x + 0.856ln(1.48 × 10−3x + 1.04), optimized using the minimum chi-square method, r2 = 0.999. c Dynamic response and recovery profiles to 1 vol% H2 at different humidity environment (16–85%), room temperature. and (d) humidity-dependent H2 sensitivity (n = 4). n represents the number of technical independent replicates. The error bars represent the standard deviation of four repeated sensing cycles measured on a single sensor device. e Selectivity evaluation under exposure to interfering analytes. f Long-term operational stability under continuous 1000 ppm and 1 vol% H2 sensing. g Sensor response measured at operating voltages ranging from 0.005 to 0.1 V. h Multi-metric performance benchmarking against state-of-the-art H2 sensors. Struc. structure, Conc. concentration, w with, Tem. temperature, LOD limit of detection. Source data are provided as a Source Data file.
