Nanotechnology is any technology which exploits phenomena and structures that can only occur at the nanometer scale, which is the scale of several atoms and small molecules. Nanotechnologies are based on a range of new materials, including carbon C60, carbon nanotubes,nanoparticles, nanowires, and polymers based on nano-size subunits. Nanotechnology products in semiconductor, energy, healthcare, materials science, and instrumentation have created existing nanotechnology markets of $499 million in 2003 with growth expected to achieve markets of $4.5 billion by 2009.
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