Nanotechnology

Chemistry plays a critical role in nanotechnology by providing a foundation for understanding the interaction of nanoparticles with different materials, as well as designing and synthesizing new nanomaterials with specific properties for various applications. By manipulating the chemical composition of nanoparticles at the atomic and molecular level, researchers can achieve desired characteristics such as improved conductivity, increased strength, or enhanced reactivity. Chemistry also enables the development of innovative nanoscale devices and systems that have the potential to revolutionize fields such as electronics, medicine, and energy.

If there were self replicating machines that could coat earth's surface with light reflecting material, this could help reduce earth's temperature. Better still would be self replicating machines that somehow sequestered gigatons of atmospheric carbon dioxide.

About 50 million years ago there was a freshwater arctic fern known as Azolla. It grew on the surface, but when it died it sank into the cold water, where it was covered and preserved. Over hundreds of thousands of years this fern pulled billions of tons of CO2 out of the atmosphere, causing earth to cool, and ultimately resulting in a long series of ice ages. One could view Azolla as nanotechnology--a self replicating machine. But its growth rate would probably be too slow to be of much service to us.

Nanotechnology can be used in science to create new materials with unique properties, such as improved strength or conductivity. It can also be used in medicine for targeted drug delivery or imaging at the cellular level. In environmental science, nanotechnology can help develop more efficient filtration systems or sensors for detecting pollutants.

Some potential disadvantages of using nanotechnology in dentistry include concerns about nanoparticle toxicity, limited research on long-term effects, and the high cost of implementing nanotechnology-based treatments. Additionally, there may be regulatory challenges related to the use of nanomaterials in dental products.

There are many reasons for nanotechnology. Imagine machinery that can repair itself. Imagine building ceramic engines from a solution, without fissures or hairline cracks. Just single solid light weight high temperature engines built up like single crystals. Imagine reducing the cost of manufacturing processes by a factor of a hundred. Nanotechnology holds out significant promise for development in numerous areas. Tiny self replicating machines could mine industrial waste for ore, or aid with the clean up of pollution. Imagine armies of tiny self replicating machines sorting garbage, separating metals, glasses, and plastics, distilling alcohol for fuel from waste biomass, and so on. This field remains in its infancy, but as time goes on we will continue to develop interesting techniques and technologies.

Nanoscience is the study of phenomena at the nanoscale, focusing on the behavior and properties of materials at the atomic and molecular level. Nanotechnology, on the other hand, involves the application of scientific knowledge to manipulate matter at the nanoscale to create new materials, devices, and systems with novel properties and functions. In essence, nanoscience is the study of small-scale phenomena, while nanotechnology is the engineering and application of nanoscale materials.

Nanotechnology as a concept has been around since the 1950s, when physicist Richard Feynman first discussed the possibility of manipulating materials at the atomic and molecular scale. However, it began to gain significant attention and develop as a field of study in the 1980s and 1990s.

To conduct research in nanotechnology, start by determining your research question or goal. Then, review existing literature, collaborate with experts in the field, and secure funding for your research. Experimentation, data collection, and analysis are essential steps in conducting nanotechnology research.

A first-class lever has the fulcrum located at one end and the effort force at the other end. Examples of first-class levers include see-saws and crowbars.

Nanotechnology produces materials, devices, and systems at the nanoscale level (1-100 nanometers). This field involves manipulating atoms and molecules to create new functionalities and properties that are useful in various industries, such as electronics, medicine, and energy. Some examples include nanosensors for detecting pollutants, nanoparticles for targeted drug delivery, and nanomaterials for improving the performance of electronics.

*If a person has completed the graduation and wanted to do the Phd, it would in my opinion be better to do the Phd in organic chemisty because it will be easier for a person who has studied the subject.

*But if he goes for nanotechnology in this subject you should also have the knowlege of physics as nanotech deals with the particle size less then 100 nm and it is nothing to relate with the chemisty unless u create some new compound using nano particles

Nanotechnology is used in chemistry to design and create new materials with unique properties at the nanoscale level, such as nanoparticles and nanomaterials. These can be used for drug delivery, environmental remediation, catalysis, and sensors due to their high surface area to volume ratio and special electronic and optical properties. Nanotechnology also enables more precise control over chemical reactions, leading to the development of new catalysts and processes.

Nanotechnology has the potential to revolutionize healthcare by offering precise drug delivery, targeted cancer treatment, and early disease detection at the cellular level inside the body. By engineering nanoparticles, researchers can create innovative medical devices and therapies that can improve treatment outcomes and minimize side effects. However, ethical and safety concerns regarding the long-term effects and unintended consequences of nanotechnology in the human body require careful consideration.

Recent successful medical trials of a cancer treatment involving the use of "nanotechnology" may open up important new avenues for the diagnosis and treatment of other cancers and diseases. Nanotechnology is a broad term covering the building of structures and "machines" on an atomic or molecular scale-in the range from 1 to 100 nanometres. A nanometre is one billionth of a metre or about the size of 10 hydrogen atoms. The techniques range from various chemical and biological processes used to "construct" structures-in some cases atom by atom-to the etching methods used to produce computer chips. The field of nanotechnology has over the last decade or so been surrounded by considerable hype. Some of the visions of what is possible in medicine conjure up the Science Fiction classic film Fantastic Voyage where tiny submarine ships were injected into the body and travelled through the bloodstream to eradicate foreign bodies. The reality is more prosaic, but the potential is nonetheless exciting. Many of the standard radiation and drug therapies now used to treat cancers can have serious side effects. The use of radiation and chemicals to kill fast-growing tumour cells inevitably affects and kills other cells in the body. Nanotechnology offers the possibility of far more precisely localising the treatment and thus minimising the damage to healthy tissue. In early April, the nanotechnology company pSivida announced the very promising results of the Phase 2 clinical trials of its product "BrachySil" for patients with liver cancer. BrachySil is a tiny structure about one-millionth of a metre in size and made up of modified particles of silicon impregnated with the radioactive isotope of phosphorus 32P. Unlike other radiation treatments that involve focussing beams of radiation on tumours, BrachySil is injected directly into the cancer using a fine gauge needle. By using 32P, the radiation is limited to a range of just 8 millimetres, resulting in the killing of tumour cells rather than healthy tissue. For several years, doctors have been using a similar technique known as brachytherapy-injecting radioisotopes directly into tumours. The difficulty was that the injected material would not remain in the cancer, but would over time be carried to other parts of the body. The advantage of BrachySil is that its silicon structures, while small, prevent the radioisotope from leaking away. The result is that the dose of radiation is focussed very precisely on the tumour itself. The silicon eventually breaks down and is excreted. 32P, which has a half-life of 14 days, eventually decomposes to stable isotopes or is excreted. Because the treatment is localised, the side effects are likely to be less than other forms of brachytherapy. None have been observed to date, although the long-term impact of the treatment is not known. BrachySil consists of tiny pockets made up of silicon microparticles. The pores or holes in the silicon pocket are the size of about 10 atoms. Radioactive phosphorus is bombarded into the structure. Because of its method of delivery of radiation doses, the treatment may well be applicable to a broader range of cancers than other forms of brachytherapy, which is currently limited to prostate and liver cancers. The clinical trial of BrachySil was undertaken at the Singapore General Hospital beginning in mid-2004. It involved eight patients suffering from primary liver cancer (where the tumours have not spread to a secondary site). They were given CT scans before and after the injection of BrachySil to determine the impact on the tumours and were monitored for possible side effects. After 12 weeks of the treatment, smaller tumours were completely eradicated. The most extraordinary finding, however, was that all tumours were reduced by an average of 80 percent-a result not seen in other treatments. After the trial results were announced, the company received a flood of inquiries and was forced to announce on its website that testing was still in its early stages. Worldwide, liver cancer is not one of the most prevalent cancers. Nevertheless, more than half a million new cases are diagnosed every year-some 45 percent of them in China. Causes of liver cancer include infection by parasites such as the Chinese liver fluke. Liver cancer can also be related to hepatitis, exposure to radiation and to the irritant Polyvinyl Chloride.

Nanotechnology deals with working with very small things. A nanometer is 10-9 meters. Think of a machine that is composed of 100 molecules, taliored to do a specific task like break up plaque in an artery, injected into the body by the thousands. This site http://www.crnano.org/whatis.htm

shows a machine comprised of 15,342 individual atoms making three gears.

Nuclear technology generally deals with the fissioning (splitting) of atoms to release energy although it also deals with using the energy of radioactive decay for various tasks such as treating cancerous tumors and sterilization of food.

Try free resource websites like WikiBook and Nanoworks. Check to see if your county and university library subscribe to Overdrive. This service provided libraries with e-books for a subscription fee.

Nanotechnology is the study of controlling matter at atomic level so it is no-where related to electrical and electronics.

Nanotechnology refers to the size scale of the items worked with. In the semiconductor industry, the devices fabricated have feature sizes in the nanometer regime. The gate length of a MOS transistor, for example, can be on the order of 10-20nm.

In nanotechnology for the semiconductor industry, quantum physics starts to play a huge role in the devices. This must be taken into account when shrinking down size scales, but can also be exploited for some really neat devices and engineering techniques.

Center for Responsible Nanotechnology was created in 2002.

That depends on your undergraduate program requirements as well as how easy you find biology and medicine. If you like it and if you are good at it, then go for it, otherwise don't bother.

One can find more information on this topic at the library, in books, novels, the internet, the store, newspapers, the internet, and life lessons when traveling.