Smart Dust is a revolutionary advancement in the sensors and communications systems which have led to remarkable miniaturization and efficient power and cost management for digital circuitry and wireless communication. Smart dust devices are tiny wireless microelectromechanical sensors (MEMS) that can detect light, humidity, and the tiniest of vibrations amongst other changes in their environment. A single Smart Dust node contains a compact, self-sufficient device (1-2 mm3) with one or more sensors, computational and communication capabilities and a power supply and is linked into a mesh-type network, relaying information from point to point, sending small signals out in a small radius, in all directions. The Smart Dust technology is still at its development stage, a lot of issues such as its power supply are currently under experimentation. However, such a technology has immense possibilities and applications: it can be used to detect defects in products or a building; low cost home and office security systems; monitoring environmental changes; and detecting diseases in the human body at their beginning stages. These are only very few examples, the list can indeed be extended to include every field where human effort is limited and can be enhanced by the use of this ground-breaking technology.
Reference:
http://www-ee.stanford.edu/~jmk/pubs/jcn.00.pdf
http://www.computerworld.com/s/article/79572/Smart_Dust?taxonomyId=15&pageNumber=1
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