semiconductor gas sensors

Semiconductor gas sensors detect gases by using materials like metal oxides whose electrical properties change when they interact with specific gases. When the target gas molecules come into contact with the sensor’s surface, they cause a change in its electrical resistance, which is measured and analyzed. This allows the sensor to identify and quantify the presence of gases such as oxygen, carbon monoxide, or volatile organic compounds. These sensors are commonly used for air quality monitoring, safety, and industrial process control because they are sensitive, fast, and suitable for real-time detection.