A big part of today’s technology and scientific research is done on a microscopic level, manipulating very small objects or particles like atoms, molecules, etc. So, basically nanotechnology is engineering, technology or science done at nano-scale. Nano-scale ranges from 1 to 100 nano-meters and nano-meter is one billionth of a meter, so practically anything that we make manipulating objects sized from slightly less than one nano-meters up to a hundred nano-meters counts as nanotechnology. The word “nano” is of Greek origin and means something small. To get the idea how small it is, one ordinary sheet of paper from your notebook is about 100,000 nano-meters thick.
It all began when a renowned physicist Richard Feynman came to the idea what it would be like if scientists could manipulate and control separate molecules, atoms or other extremely small objects. He shared it with the world in his lecture named “There’s Plenty of Room at the Bottom” in the year of 1959 at the California Institute of Technology where the meeting of American Physical Society was held.