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August 11th, 2007
A national programme launched over six years ago has today yielded a host of MEMS devices such as silicon-based pressure sensors, electronic chemical sensors, piezoelectric actuators, biochips and microsystems for molecular amplification in biology.
There have been other developments in nano science - a branch of science that deals with materials of sizes that are thousand times thinner than human hair. Scientists at the Indian Institute of Science, Bangalore, in 2003 showed that flow of fluids through carbon nanotubes generates electric current. That is, these nanotubes act as 'flow sensors'.
This has immediate and interesting application possibilities. You can imagine a coronary pacemaker without battery and powered by the body's own blood or a tiny implant that controls the blood flow of a heart-lung machine or as nanosensors in chemical and biological reactors where fluid flows have to be precisely controlled.
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