Gassensitive
Gas-sensitive, sometimes written as gassensitive, is an adjective used in materials science and sensor technology to describe materials, devices, or systems that respond to the presence of gas molecules. A gas-sensitive element detects and transduces chemical interactions at its surface into a measurable signal, such as changes in electrical resistance, optical properties, or mass, enabling the quantification of gas concentration. The term is commonly applied to gas sensing components and is often used interchangeably with gas-sensing or gas-detecting.
Mechanisms of gas sensitivity typically involve adsorption of gas molecules on active surfaces followed by charge
Performance of gas-sensitive systems is described by metrics such as sensitivity, selectivity, limit of detection, and
Applications range from environmental and industrial safety monitoring to automotive exhaust sensors and medical breath analysis.