Dawn of nitride ferroelectric semiconductors: from materials to devices

P Wang, D Wang, S Mondal, M Hu… - Semiconductor Science …, 2023 - iopscience.iop.org
III-nitride semiconductors are promising optoelectronic and electronic materials and have
been extensively investigated in the past decades. New functionalities, such as …

Multiplex-gas detection based on non-dispersive infrared technique: a review

JG Liang, Y Jiang, JK Wu, C Wang… - Sensors and Actuators A …, 2023 - Elsevier
Compared to the gas sensors of electrochemical and semiconductors, the non-dispersive
infrared technique (NDIR) can selectively detect multiple types of gases due to the …

Portable TDLAS Sensor for Online Monitoring of CO2 and H2O Using a Miniaturized Multi-Pass Cell

M Gu, J Chen, Y Zhang, T Tan, G Wang, K Liu, X Gao… - Sensors, 2023 - mdpi.com
We designed a tunable diode laser absorption spectroscopy (TDLAS) sensor for the online
monitoring of CO2 and H2O concentrations. It comprised a small self-design multi-pass cell …

CMOS AlN and ScAlN Pyroelectric Detectors with Optical Enhancement for Detection of CO2 and CH4 Gases

DKT Ng, L Xu, YH Fu, W Chen, CP Ho… - Advanced Electronic …, 2023 - Wiley Online Library
Gas sensors are useful for monitoring of greenhouse gases. As the move toward
complementary metal‐oxide‐semiconductor (CMOS) compatible pyroelectric room …

Recent advances in optical gas sensors for carbon dioxide detection

P Li, J Li, S Song, J Chen, N Zhong, Q Xie, Y Liu… - Measurement, 2024 - Elsevier
Carbon dioxide (CO 2) is a colorless and odorless gas. The imbalanced CO 2
concentrations can have detrimental effects, therefore numerous CO 2 gas sensors have …

Urchin-like Co3O4 microspheres-boosted catalytic oxidation: Environmentally-friendly CO2 vapor generation for total organic carbon detection by microplasma optical …

R Yang, C Ye, Y Su, J Yang, Q Liu, C Zheng - Talanta, 2025 - Elsevier
Total organic carbon (TOC) is a crucial indicator of organic pollutants, widely used in
environmental water quality monitoring and risk assessment. Conventional TOC detection …

Specific Alcohol-Responsive Photonic Crystal Sensors Based on Host-Guest Recognition

X Cai, X Zhang, J Fan, W Zheng, T Zhang, L Qiu… - Gels, 2023 - mdpi.com
A photonic crystal material based on β-cyclodextrin (β-CD) with adsorption capacity is
reported. The materials ((A-β-CD)-AM PC) consist of 3D poly (methyl methacrylate)(PMMA) …

Experimental Study on Enhanced Methane Detection Using an MEMS-Pyroelectric Sensor Integrated with a Wavelet Algorithm

W Dong, Y Sugai, Y Wang, H Zhang, X Zhang… - ACS …, 2024 - ACS Publications
An optical sensing approach that balances portability with cost efficiency has been designed
for the reliable monitoring of fugitive methane (CH4) emissions. Employing a LiTaO3-based …

Low-power contactless button system based on MEMS ScAlN pyroelectric detector

L Xu, DKT Ng, W Chen, N Li, CP Ho… - MOEMS and …, 2023 - spiedigitallibrary.org
We demonstrate a system-level low-power contactless button using MEMS ScAlN-based
pyroelectric detector. As pyroelectric detectors can sense instantaneous temperature …

Pyroelectric infrared device with multilayer compensation structure

QQ Wu, Y Zhao, XC Li - Sensors and Actuators A: Physical, 2024 - Elsevier
The compensation structure can help the pyroelectric device to suppress noise caused by
environment effects. However, the traditional compensation structure is not helpful for device …