Volatile organic compounds (VOCs) have received increasing attentions recently. They are
important for air quality monitoring, and biomarkers for diseases diagnosis. For the gas …

Gas sensors that can measure multiple pollutants simultaneously are highly desirable for on-
site air pollution monitoring at various scales, both indoor and outdoor. Herein, we introduce …

With the increased demand for hand-held and ambient gas sensors, it is imperative to
develop sensors that can offer both selective and sensitive detection. Gas preconcentration …

The article presents a technique of differential ion mobility spectrometry (DMS) applicable to
the detection and identification of volatile organic compounds (VOCs) from such categories …

Miniaturized Fourier transform infrared spectrometers serve emerging market needs in many
applications such as gas analysis. The miniaturization comes at the cost of lower …

Micro‐electromechanical systems (MEMS) are microscopic devices combining electrical
functionality and mechanical motion. Typically fabricated in high numbers on a large …

In this work, we present a MEMS-based ATR FTIR spectrometer operating in the wavelength
range of 1.8 μm to 6.8 μm. The core engine of the spectrometer is a monolithically integrated …

Miniaturized Fourier transform infrared spectrometers serve important market needs in many
applications such as gas analysis. The miniaturization comes at the cost of lower …

As part of a future optical platform on-chip, we present a waveguide integrated tunable Fabry-
Pérot Interferometer (FPI) for the long infrared wavelength range. The FPI consists of two …

Miniaturization of attenuated total reflectance (ATR) spectrometers has been an emerging
field applying such powerful surface sensing method for in-situ spectroscopic analysis. In …