"Self-Powered, Low-Cost Respiration Monitoring in Real-Time"

Recent years have seen a lot of interest in developing portable, high-performance, and low-cost humidity sensors for respiratory monitoring. In a paper published in the journal Nano Energy, carbon nanodots (CDs) have been used to produce humidity sensors that have great sensitivity (5318%) at 94% relative humidity (RH) and exceptional long-term stability in the 11-94 percent RH range.