INTRODUCTION
The current ultramodern technologies are focusing on automation
and miniaturization. The decreasing computing device size, increased
connectivity and enhanced interaction with the physical world have
characterized computing’s history. Recently, the popularity of small
computing devices, such as hand held computers and cell phones; rapidly
flourishing internet group and the diminishing size and cost of sensors and
especially transistors have accelerated these strengths. The emergence of
small computing elements, with sporadic connectivity and increased
interaction with the environment, provides enriched opportunities to
reshape interactions between people and computers and spur ubiquitous
computing researches.
Smart dust is tiny electronic devices designed to capture mountains
of information about their surroundings while literally floating on air.
Nowadays, sensors, computers and communicators are shrinking down to
ridiculously small sizes. If all of these are packed into a single tiny device,
it can open up new dimensions in the field of communications.
The idea behind ‘smart dust’ is to pack sophisticated sensors, tiny
computers and wireless communicators in to a cubic-millimeter mote to
form the basis of integrated, massively distributed sensor networks. They
will be light enough to remain suspended in air for hours. As the motes
drift on wind, they can monitor the environment for light, sound,
temperature, chemical composition and a wide range of other information,
and beam that data back to the base station, miles away.
