The review discusses innovations in quartz-enhanced laser spectroscopy, emphasizing QEPAS and LITES for improved sensitivity in trace gas sensing technologies.

Monitoring trace gases with high sensitivity and selectivity is essential for environmental safety and smart monitoring systems. Recently, a research team led by Professor Baicheng Yao from Key ...

The passive PT-symmetric model for SAW sensor. a The schematic diagram of the coupled resonators model and the real part of the eigenfrequency surfaces in the parameter space (ω1=ω2=ω0=0,γ0=0). The ...

The circuit was designed to be able to obtain signals via amplitude modulation where the sensitivity and selectivity is fairly good. Amplitude Modulation AM – a method of emphasizing data on an ...