10-Millisecond Flash Boosts Room-Temperature NO2 Gas Sensor Response
ANSAN-SI, South Korea – October 30, 2026 -- A single 10-millisecond light pulse produced molybdenum disulfide (MoS2) gas-sensing material with a 23.6-fold stronger response to 5 parts per million of nitrogen dioxide (NO2) than material made by a conventional solvothermal method, according to researchers at Hanyang University-ERICA and KAIST.
Platinum-doped sensor reaches 100.8% response to NO2 at room temperature
Adding 1.2 weight% platinum raised the sensor response 22.8-fold. The response reached 100.8% at 400 parts per billion of NO2 at room temperature. The platinum-enhanced sensor detected NO2 at concentrations as low as 17.2 parts per billion.
The device was selective for NO2 against several other tested gases and held a stable response through 25 exposure-and-recovery cycles. After three weeks in ambient air, its response had declined by only 2.6%.