General Purpose technology
Nanotechnology can create machines, peripheral home appliances with best functioning until now. It is the only technology, which is general purpose. From Light Emitting Diodes (LEDs) to socks, all are processed at atomic scale for increasing and improving the quality of the product.
Nanoparticles are so small that they can easily penetrate into the skin and thus help in repairing the skin tissues. It is because of this factor that you can prevent skin aging by using the products which have the nanotechnology built into it.
This technology is also used in preventing the hair loss and graying issues.
Nano-DNA Technology
Information of semi-synthetic DNA-protein conjugates, self-assembled oligomeric networks consisting of streptavidin and double-stranded DNA, which can be converted into well-defined supramolecular nanocircles have been developed.
Nanotechnology in Measurements of Dissolved Oxygen
Oxygen is one of the major metabolites in aerobic systems, and the measurement of dissolved oxygen is of vital importance in medical, industrial, and environmental applications. Recent interest in the methods for measuring dissolved oxygen concentration has been focused mainly on optical sensors, due to their advantages over conventional amperometric electrodes in that they are faster, do not consume oxygen, and are not easily poisoned
Application of Nanotechnology to Tissue Engineering
The involvement of microelectronics or nanotechnology in creating a truly bioartificial tissue or organ that can take the place of one that is terminally diseased, such as an eye, ear, heart, or joint has been envisaged. Implantable prosthetic devices and nanoscaffolds for use in the growing of artificial organs are goals of nanotechnology researchers. Nanoengineering of hydroxyapatite for bone replacement is reasonably advanced.
Growth of New Organs
Nanoscale building of cells can be accomplished by their programmed replication. The signals are transmitted back and forth with the instruction for the desired size and shape form the construction site. When complete instructions are finished, the organs can be grown according to the prerequisite specifications.
The size of nanomaterials is similar to that of most biological molecules and structures; therefore, nanomaterials can be useful for both in vivo and in vitro biomedical research and applications. Thus far, the integration of nanomaterials with biology has led to the development of diagnostic devices, contrast agents, analytical tools, physical therapy applications, and drug delivery vehicles.
Diagnostics
Nanotechnology-on-a-chip is one more dimension of technology. Magnetic nanoparticles, bound to a suitable antibody, are used to label specific molecules, structures or microorganisms.
Drug delivery
The overall drug consumption and side-effects can be lowered significantly by depositing the active agent in the morbid region only and in no higher dose than needed.
Tissue engineering
Nanotechnology can help reproduce or repair damaged tissue. “Tissue engineering” makes use of artificially stimulated cell proliferation by using suitable nanomaterial-based scaffolds and growth factors. For example, bones can be regrown on scaffolds.
Filtration
Nanoporous membranes are suitable for a mechanical filtration with extremely small pores smaller than 10 nm (“nanofiltration”) and may be . Nanofiltration is mainly used for the removal of ions or the separation of different fluids. On a larger scale, the is named ultrafiltration, which works down to between 10 and 100 nm.
The most advanced nanotechnology projects related to energy are: storage, conversion, manufacturing improvements by reducing materials and process rates, energy saving (by better thermal insulation for example), and enhanced renewable energy sources.
Reduction of energy consumption
Nanotechnological approaches like (LEDs) or (QCAs) could lead to a strong reduction of energy consumption for illumination.
Nanotechnology could help increase the efficiency of light conversion by using nanostructures with a continuum of .
The degree of efficiency of the is about 30-40% at the moment.
Memory Storage
Two leaders in this area are which has developed a carbon nanotube based crossbar memory called and which has proposed the use of material as a future replacement of Flash memory.
Displays
The production of displays with low energy consumption could be accomplished using (CNT). Carbon nanotubes are electrically conductive and due to their small diameter of several nanometers, they can be used as field emitters with extremely high efficiency for (FED). The principle of operation resembles that of the , but on a much smaller length scale.
Quantum computers
Entirely new approaches for computing exploit the laws of quantum mechanics for novel quantum computers, which enable the use of fast quantum algorithms. The Quantum computer has quantum bit memory space termed "Qubit" for several computations at the same time. This facility may improve the performance of the older systems.
The use of nanotechnology in construction involves the development of new concept and understanding of the hydration of cement particles and the use of nano-size ingredients such as alumina and silica and other nanoparticles. The manufactures also investigating the methods of manufacturing of nano-cement. When materials becomes nano-sized, the proportion of atoms on the surface increases relative to those inside and this leads to novel properties.
HouseholdThe most prominent application of nanotechnology in the household is self-cleaning or “easy-to-clean” surfaces on ceramics or glasses. Nano ceramic particles have improved the smoothness and heat resistance of common household equipment such as the .
OpticsThe first sunglasses using protective and anti-reflective ultrathin polymer coatings are on the market. For optics, nanotechnology also offers scratch resistant surface coatings based on nanocomposites. could allow for an increase in precision of pupil repair and other types of laser eye surgery.
TextilesThe use of engineered nanofibers already makes clothes water- and stain-repellent or wrinkle-free. Textiles with a nanotechnological can be washed less frequently and at lower temperatures. AgricultureApplications of nanotechnology have the potential to change the entire agriculture sector and food industry chain from production to conservation, processing, packaging, transportation, and even waste treatment. NanoScience concepts and nanotechnology applications have the potential to redesign the production cycle, restructure the processing and conservation processes and redefine the food habits of the people.
Advantages of Nanotechnology
- Nanotechnology can actually revolutionize a lot of electronic products, procedures, and applications. The areas that benefit from the continued development of nanotechnology when it comes to electronic products include nano transistors, nano diodes, OLED, plasma displays, quantum computers, and many more.
- Nanotechnology can also benefit the energy sector. The development of more effective energy-producing, energy-absorbing, and energy storage products in smaller and more efficient devices is possible with this technology. Such items like batteries, fuel cells, and solar cells can be built smaller but can be made to be more effective with this technology.
- Another industry that can benefit from nanotechnology is the manufacturing sector that will need materials like nanotubes, aerogels, nano particles, and other similar items to produce their products with. These materials are often stronger, more durable, and lighter than those that are not produced with the help of nanotechnology.
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In the medical world, nanotechnology is also seen as a boon since these can help with creating what is called . These help cure people faster and without the side effects that other traditional drugs have. You will also find that the research of nanotechnology in medicine is now focusing on areas like tissue regeneration, bone repair, immunity and even cures for such ailments like cancer, diabetes, and other life threatening diseases.
Disadvantages of Nanotechnology
- Included in the list of disadvantages of this science and its development is the possible loss of jobs in the traditional farming and manufacturing industry.
- You will also find that the development of nanotechnology can also bring about the crash of certain markets due to the lowering of the value of oil and diamonds due to the possibility of developing alternative sources of energy that are more efficient and won’t require the use of fossil fuels. This can also mean that since people can now develop products at the molecular level, diamonds will also lose its value since it can now be mass produced.
- Atomic weapons can now be more accessible and made to be more powerful and more destructive. These can also become more accessible with nanotechnology.
- Since these particles are very small, problems can actually arise from the inhalation of these minute particles, much like the problems a person gets from inhaling minute asbestos particles.
- Presently, nanotechnology is very expensive and developing it can cost you a lot of money. It is also pretty difficult to manufacture, which is probably why products made with nanotechnology are more expensive. Nanopollutants are nanoparticles small enough to enter your lungs or be absorbed by your skin. Nanopollutants can be natural or man-made. Chinese researchers discovered that a class of nanoparticles being widely developed in medicine - ployamidoamine dendrimers (PAMAMs) – cause lung damage by triggering a type of programmed cell death known as autophagic cell death. They also showed that using an autophagy inhibitor prevented the cell death and counteracted nanoparticle-induced lung damage in mice.
- Virtually undetectable surveillance devices could dramatically increase spying on governments, corporations and private citizens.
- Molecular manufacturing is the assembly of products one molecule at a time. It could make the same products you see today, but far more precisely and at a very low cost. It is unclear whether this would bring boom or bust to the global economy.
- Untraceable weapons made with nanotechnology could be smaller than an insect with the intelligence of a supercomputer. Possible nano and bio technology arms race.
- Constantly breaking and reforming bonds as well as the friction by millions of nanobots is likely to produce a large amount of heat. This will cause problems in fabricating certain extremely temperature sensitive materials such as nitroglycerin which could explode if it experienced even a 1 degree shift in temperature.
- Sure machines are versatile but because they work on such a small scale they may run into issues competing with other technologies for market space. Automated factories although larger, could run a much larger amount of product in the time that it takes for a maker to do the same..
Significance and impact
Nanotechnology takes theories and ideas of disciplines, not only with the technology and physics but also chemistry, biology, mathematics and computing. It 'is also proclaimed as the next big technologicalRevolution.
As already mentioned, its use is very different from the new additions to the traditional physical device to set completely new approaches to molecular self-assembly, the improvement of new materials with nanometer dimensions that vary, including whether to directly manipulate matter on presumptions of atomic scale.
During the development of nanotechnology for decades has the potential to claim more take, and the early developers could be significant Institutions of great wealth, that the effort can provide significant advances in nanotechnology will eventually be accessible to a wider variety of people. At this moment in time, now that the feasibility of nanotechnology is widely recognized, we enter the final phase of the national debate on what programs should not be forgotten best deal on it. Increased energy expertise, cleaner environment, more productive and better medical treatmentproduction design are just some of the potential benefits of nanotechnology.
Preparing for a Career in Nanotechnology:There are few degrees of study specifically in nanotechnology, so look for a good, well-rounded physics program. Nanotechnology works at tiny levels of matter, so knowledge of atomic, molecular, chemical and quantum physics is essential to this field of study. Working knowledge of biochemistry, chemistry, and biophysics, as well as a proficiency with complex mathematics, would also help qualify you for this field.
Research started on 7/10/2011
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