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 …

Abstract Nitrogen dioxide (NO 2), a hazardous gas with acidic nature, is continuously being
liberated in the atmosphere due to human activity. The NO 2 sensors based on traditional …

Hydrogen (H2) sensors are of great significance in hydrogen energy development and
hydrogen safety monitoring. However, achieving fast and effective detection of low …

Modulation of oxygen vacancy (VO··) concentrations in SnO 2 is an efficient strategy for
improving its NO 2 sensing performance. However, due to the complex reaction process …

As a typical metal oxide semiconductor, ZnO has been investigated deeply for the
application of gas sensing materials. In this study, an ultrahigh sensitive and selective NO 2 …

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

Abstract Indium oxide (In 2 O 3) gas sensors are regarded as one of the potential materials
for detecting and quantifying hazardous gases for monitoring systems and public safety …

Owing to its excellent physical and chemical properties, ZnO has been considered to be a
promising material for development of NO2 sensors with high sensitivity, and fast response …

NO 2, having a reddish-brown color and biting odor, is the most prominent toxic waste
present in the atmosphere. The major contributors to NO 2 gas include emissions from …

The employment of nn homotypic heterogeneous junctions is an efficient method to improve
sensitive performance of metal oxide-based gas sensors owing to the generation of charge …