A reliable indicator of the air quality in offices, classrooms, or living rooms is the CO2 content. In fresh air, the concentration of carbon dioxide is around 400 ppm. This stands for “parts per ...

Nature Sensors publishes fundamental, applied, and engineering research across the full spectrum of sensing technologies, spanning biological, computational, engineering, and systems domains. The ...

Optical sensors are a broad class of device for detecting light intensity. This can be just a simple component for notifying when ambient light levels rise above or fall below a prescribed level, or a ...