Nanotechnology a big things
Imagine a doctor injecting a patient with tiny devices. It can rove the body in search of cancer cells. Disease causing bacteria. Such device would deliver medicine. Targeted specifically to a diseased organ or to the bacteria. Though still years away. Scientists are trying to make such a scenario. It is possible through nanotechnology. A hot research area in which scientists use atoms and molecules to build materials. It is used in many areas. Such as health care, clean energy sources, and shrinking electronics. Nanotechnology.
These “nanomaterials” measure between 1 and 100 nanometers. Derived from “nanos” – the Greek word for a small person. A nanometer is 1 billionth of a meter. In comparison, a strand of hair is roughly 100, 000 nanometers wide. Various techniques and products based on nanoscale particles.
1. Drug – Delivery technique :
Dendrimers are a type of nanostructures. It can be precisely designed and manufactured for a wide variety of applications. It including the treatment of cancer. Other diseases Dendrimers carrying different materials. In their branches can do several things at one time. Such as recognising diseased cells, diagonising diseased states. Drug delivering and reporting outcomes of therapy.
2. Nano films :
Different nanoscale materials can be used in thin films. To make them water repellent, anti – reflective, ultraviolet or infrared – resistant. Scratchresistant and electrically conductive. Nano films are used now on eyeglasses. Computer display and cameras to protect or treat the surfaces.
3. Water filtration technique :
Researches are experimenting with carbon nanotubes. It is based on membranes for water desalination. Nanoscale sensors to identify contaminants in water system. Other nanoscale mateials that have great potential to filter. Purify water include nanoscale titanium dioxide. It is used in sunscreen and which has been shown to neutralize bacteria.
4. Nano tubes :
Carbon nanotubes are allotropes of carbon with a cylindrical nanostructure. Nanotubes have been constructed with length to diameter ratio of up to 28, 000, 000 : 1. It is significantly larger than any other material. These cylindrical carbon molecules have novel properties. It makes them potentially useful in many applications in nanotechnology. Electronics, optics and other fields of materials science. As well as potential uses in architectural fields. They exhibit extraordinary strength and unique electrical properties. They are efficient conductors of heat.
5. Nanoscale Transistors
Transistors are electronic switching devices. Where a small amount of electricity is used like a gate. To control the flow of larger amount of electricity. In computers, the more transistors, the greater the power. Transistors sizes have been decreasing, so computer have become more powerful. Until recently, the industry is best commercial technology produced. Computer chips with transistor having 45 – nanometer features.
6. Nanotechnology and space
It may hold the key to making space flight more practical. Advancements in nanomaterials make light weight solar sails. A cable for the space elevator possible. In addition, new materials combined with nanosensors and nanorobots. It could improve the performance of spaceships, spacesuits. The equipment used to explore planets and moons, making nanotechnology. An important part of the ‘final frontier’ .
Today, many of our nations most creative scientists and engineers. They are finding new ways to use nanotechnology to improve the world. In which we live. These researchers envision a world in which new materials designed. At the atomic & molecular level. It provides realistic, cost effective methods for harnessing renewable energy sources. Keeping our environment clean. It has opened scientific inquiry to the level of molecules. A world of new opportunities.