Light-induced thermoelastic spectroscopy (LITES) is a promising optical approach for gas
sensing, which uses a quartz tuning fork (QTF) as a photothermal detector, instead of a …

The theoretical basis of eVOCs as biomarkers for respiratory disease diagnosis is described,
followed by a review of the potential biomarkers that have been proposed as targets from in …

Electromagnetic metasurfaces with excellent electromagnetic wave regulation properties are
promising for designing high-performance polarization control devices, while the application …

In this paper, a high-resolution laser absorption spectrometer is developed using a
distributed feedback (DFB) diode laser in the spectral region near 760 nm, which is …

In urban areas, there has been a recent rise in ground-level ozone. Given its toxicity to both
humans and the environment, the investigation of ozone pollution demands attention and …

Human exhaled gases contain a wide range of volatile organic compounds, offering the
potential for detecting physiological, cardiovascular, and endocrine disorders. For instance …

Micro/nano waveguide has been widely exploited for gas sensing due to its strong
confinement of evanescent field, compact size, and fast response. However, the state‐or‐the …

Organic semiconductors can afford detection at wavelengths beyond commercial silicon
photodetectors. However, for each targeted near-infrared wavelength range, this requires …

Hydrogen sulphide (H 2 S) is an extremely hazardous gas which leads to poisoning at
higher concentration. Here, we demonstrate the trace detection and line intensity …

Calibration-free wavelength modulation spectroscopy (WMS) is an efficient technique for
trace gas monitoring. It is widely used due to its resistance to light intensity fluctuations …