Artificial olfaction based on gas sensor arrays aims to substitute for, support, and surpass
human olfaction. Like mammalian olfaction, a larger number of sensors and more signal …

Metal oxide resistive-type nano-scale gas sensors have been investigated for their low cost,
high sensitivity, and environmentally friendly fabrication. In these sensors, electrical …

Conventional gas-sensing materials for detecting trace NO 2 gas are suffering from
limitations such as low selectivity, high operation temperature and an agglomerated …

Surface oxygen vacancy defects (OV) are regarded to be beneficial to the gas sensing
behavior by significantly improving the carrier density and providing more oxygen …

With the emergence of hydrogen economy worldwide and the increase of safety problems
caused by the highly flammable and explosive characteristics of hydrogen (H 2), it is urgent …

Gas sensors are frequently used for detecting toxic gases and vapors for environmental
control, industrial monitoring and household safety. Semiconductor conductivity can be …

It is still a challenging task to achieve the rapid detection of hydrogen (H 2) with the rapid
development of hydrogen energy sector. In this work, the H 2 sensing capabilities of pristine …

The development of high-performance, portable and miniaturized gas sensors has aroused
increasing interest in the fields of environmental monitoring, security, medical diagnosis, and …

Being a clean source of energy, hydrogen gas is in high demand in various industrial and
commercial applications. However, the explosive nature of H 2 gas above 4% concentration …

In this paper, a NO 2 gas sensor with outstanding sensing performance based on NiCo 2 O
4/WO 3 nanocomposite was synthesized by a hydrothermal method. A variety of testing …