What is nanotechnology? Nanotechnology is the science and the engineering achieving the manipulation of matters from atoms and molecules unit level. The physical dimension of nanotechnology is expressed in nanometer. A nanometer (nm) is one billionth of a meter. An analogy made between a meter and nanometer in a more understandable context, is the difference between the sizes of one small marble ball to the earth.

Moreover, matter in nanotechnology is anything that occupies space and has mass. The smallest unit of matter is an atom. For example, one can take a chair and try to break it down into its different elements, and when one gets to the atom, there are no more parts to be broken, no more elements, only the three subatomic particles: protons, electrons, and neutrons which make up the microscopic atom. Molecules are made of atoms, and rearranging the atoms in a particular molecule could lead us to other manufactured units that could be more needed at the time. For instance, rearranging the atoms in sand, and adding a few other trace elements can give us computer chips. Isn't it something amazing? Scientists could take so much advantage of that way of operating and fabricating. However, since the atoms are such microscopically particles; it is difficult to work with and manipulate them. Today, scientists use nanotechnology as an asset to work with something that requires special microscopes for them to be able to see. In other words, with nanotechnology, scientists are no longer tied hands when it comes to dealing with units less than 100 nm. Now, they are able to snap these units together in the way they desire and make their studies more precise. Nanotechnology is the control and manufacturing of those units that are less than about 1000 nanometers with advanced tech nano devices.

Nanotechnology is an extensive field and can be divided into two main approaches. One of those approaches is the construction of materials or devices from molecular components, which will chemically assemble themselves by recognition of their molecules-a larger to smaller perspective. The other approach will be the manufacturing of nano-objects from larger entities without any atomic level control-a smallest to complex perspective. Scientists tend to focus more on the molecular perspective, which is the simplest to complex approach where atoms will be used to construct new materials.

Using nanotechnology scientists are surprised through

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