13.7 Applications of nanotechnology
Nanomaterials are found in both biological systems and man-made structures. Nature has been using nanomaterials for millions of years. The large surface area to volume ratio increases the chemical activity. Nanomaterials have the following applications.
(i) In microelectronics: In microelectronics, the reduction in size of electronic components leads to faster switching times. Nanotechnology includes fabrication of nanowires used in semiconductors. Porous silicon emits visible light, so it finds application in optoelectronics. Quantum dot lasers are nanoscaled objects, they emit good-quality laser beam compared to semiconductor laser diodes. They are cheaper and the emitted wavelength depends on the diameter ...
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