Photograph of an optically trapped microparticle in high vacuum. The microparticle is visible as a white dot levitated between two lenses, which are used to focus and collect the invisible infrared ...

TUCSON, Ariz.– NASA’s Phoenix Mars Lander has taken the first-ever image of a single particle of Mars’ ubiquitous dust, using its atomic force microscope. The particle — shown at higher magnification ...

A dust sensor is an optical electronic system to detect fine particles such as dust. In principle, an optical dust sensor detects the dust particle concentration the in air by using an optical sensing ...

Large amounts of dust are released from traffic emissions, industrial operations, and waste disposal activities, directly or indirectly pollute the environment, especially the soil and the atmosphere.