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Researchers imagine "smart dust": sensors so small that dozens could fit on a fingertip and be scattered to monitor an environment.
Smart dust describes a proposed network of extremely small wireless devices, maybe just millimeters across, each combining a tiny sensor, some computing power, and wireless communication. Because each unit is small and cheap, huge numbers could be scattered across a field or building to collectively sense temperature, light, vibration, or chemicals across that space.
A new cleaning powder describes a mundane household product with no sensing ability. Dust generating electricity for homes misunderstands the concept, since smart dust units sense and communicate, they don't power a household.
Fully realized smart dust remains more a long-term research goal than a widely deployed technology, but it strongly influenced the broader field of tiny wireless sensor networks already used today in more modest forms.
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