Nanotechnology as the name suggests is derived from two words-nano meaning small and technology meaning the science and engineering so it may be defined as the science and engineering at scale of atoms and molecules. Nanotechnology involves materials so small (1 to 100 nanometers in size) that they exhibit unique properties. The goal of nanotechnology research is to understand unique properties of nanosized particles and use that knowledge to create new, high performance materials, devices and processes. Nanotechnology has no. of advantages in various fields such as nanoelectronics , nanooptics, nanobiotechnology, nanoanalysis, nanochemistry and inter disciplinary skill needs. According to National Nanotechnology Initiative nanoscience and nanoengineering are leading to unprecedented understanding of the fundamental building blocks of all physical things. These developments are likely to change the way almost everything i.e. from vaccines to computers to automobile tires to objects not yet imagined- is designed and made. Hence nanotechnology is important because it is relatively cheap, relatively safe, relatively clean and the financial rewards are relatively very high. It is the technology oriented towards applications and has potential to create new things.
“THE ONLY WAY OF FINDING THE LIMITS OF THE POSSIBLE IS BY GOING BEYOND THEM INTO THE IMPOSSIBLE AND THAT IS NANO TECHNOLOGY”
N=NAISSANT (RISING OR COMING FORTH)
O=OCTONOCULAR (HAVING EIGHT EYES)
The word nanotechnology means different things to different people.
For some, it conjures up images of fabulous new materials, lighter and stronger than steel. Others envision microscopic robots that clean plaque from our arteries and tartar from our teeth.
Clearly, nanotechnology has captured the attention of the scientific community, the media and now the public, but just exactly what is it?
In the purest sense, nanotechnology is the science of small -- very small -- things measured in units called nanometers, which are one-billionth of a meter. Put another way, a nanometer is so small that if one meter were stretched from New York to Los Angeles, each nanometer would still be only the size of an aspirin.
Nanotechnology has variety of applications in different fields .They are:
A. Medicine: Researchers are developing customized nanoparticles the size of molecules that can deliver drugs directly to diseased cells in your body. When it’s perfected, this method should greatly reduce the damage treatment such as chemotherapy does to a patient’s healthy cells.
B. Electronics: Nanotechnology holds some answers for how we might increase the capabilities of electronics devices while we reduce their weight and power consumption.
C. Space : Nanotechnology may hold the key to making space-fight more practical. Advancements in nanomaterials make light weight solar sails and a cable for the space elevator possible. by significantly reducing the amount of rocket fuel required, these advances could lower the cost of reaching orbit and travelling in space.
D. Food : Nanotechnology is having an impact on several aspects of food science, from how food is grown to how it is packaged. Companies are developing nanomaterials that will make a difference not only in the taste of food, but also in food safety, and the health benefits that food delivers.
E. Fuel cells: Nanotechnology is being used to reduce the cost of catalysts used in fuel cells to produce hydrogen ions from fuel such as methonal and to improve the efficiency of membranes used in fuels cells to improve the efficiency of members used in fuel cells to separate hydrogen is from other gases such as oxygen.
F. Solar cells: Companies have developed nanotech solar cells that can be manufactured at significantly lower cost than conventional solar cells.
G. Batteries: companies are currently...