Jennifer Salerno asked:




Since the invention of radio, it is playing a great role in everyone’s life due to its valuable role in the mass media. History reveals that Indian scientist Jagadish Chandra Bose started his research work on the detection of the millimeter wave radiation and later he demonstrated his apparatus for detecting radio frequency. In the past radio used to be a large thing with vacuum tube technology, but with the passage of ages it was transformed into a much sophisticated and smaller device with a solid state transistor technology. Recently carbon nanotubes have been used as components in high frequency.

The American scientists first developed in the world, such a radio device which is based on nano sized radio-wave receivers and detectors fabricated from a single carbon nanotube. In such a radio antenna and tuner can operate in a different way compared to the traditional radio, which receives the signals via high frequency mechanical vibrations of the nanotube rather than electrically. These vibrations only become significant only when the frequency of the incoming wave matches the resonance frequency of the nanotube. This resonance can be tuned to receive a band of electromagnetic spectrum. The audio quality of the signal is demodulated by the carbon nanotube. The audio quality of the signal is demodulated by the carbon nanotube. The nanotube radio can be inserted inside the human living cell for a sub cellular remote controlled interface. The nanotube radio can be inserted inside the human living cell for a sub cellular remote controlled interface. A single carbon nanotube served all the purposes of a radio. It played the role of all the four essential components such as amplifier, antenna, demodulator and tuner.

With the growth of civilizations, new inventions and discovery are made which rapidly influence the lives of common people. Wireless technology develops in a faster pace with the passage of years. The bubble which bursts and left the world spellbound with its impact is the internet. The growing inter services change many things, it even change the age old radio system. To make a radio a radical media for communication, it should be used with some empowering knowledge. Online talk radio provides us to share our views and opinions online, to solve our problems be it health related or related to our personal life. Though it is somehow true that discussing a thing openly lead to controversial matters.

Nanotube Monitors

minniedolphlq asked:


In computing industries nano means curses based text editor which is used in unix and unix-like systems. One ca n say that the nano which they are using is the clone of pico who was counted as the editor of the pine email client. Now nano in the market is taken as which emulates the operations nad easy accessingof interface of pico with no aid of strong mailer synchronization of pine and pico package. In the book of GNU that is general public license nano is termed as free software. In the year 1999 chris allegretta discovered nano by using the tip. The intention of chris allegretta was to make such a free software which can replace pico. But under free software license none of them were distributed in the market. Later in the year2000 name was changed officially as nano to separate it from the tip command. This name belongs from si prefixes in which nano thought to be one thousand times larger than pico. As going through this journey of name nano in the year 2001 become official part of gnu project.

Now the nano is more preferrable among its users than pico as it has colored text, regular experession, search and replace option, smooth scrolling and many multiple buffers etc. Just like pico, nano has the keyboard orientation which is controlled by control keys such as control O helps in saving the current file, control W for search menu. On the keyboard nano keeps the shortcut bar just below the bottom showing lots of commands present in the current context. For toggling one behaviour nano uses meta keys in the c omputing system. Nano has the specific feature of using the mouse not only for activating the functions present on the shortcut bar but also positioning the cursor. Nano is widely used in many fields such as science and engineering, people, fiction and entertainment, and in many other uses.

Like in engineering nanotube means nanometre scale tube like structure, nanobe means small tiny filaments structures in rocks and sediments, nano used as a text editor etc. Then as people sourc e nano used as nano rubio who is a contemporary artist living in california, fatos nano who is a primeminister of albania, lourdes flores nano who is the leader of the national unity party of peru. In fiction and entertainment nano-nano pudding who is a charac ter of the anime galaxy angle II, nano also a brand fo virtual pets, ipod nano which is a media player marketed by apple inc., silver nano samsung product in the market etc . So in this way nano has vast usage in everydays life in each and ev ery field.



Nanotech Plastics

cindy asked:




Super laptop Battery Ever wish you could charge your cellphone or laptop in a few seconds rather than hours? As this ScienCentral News video explains, researchers at the Massachusetts Institute of Technology are developing a battery that could do just that, and also might never need to be replaced.

The Past is Future

As our portable devices get more high-tech, the laptop batteries that power them can seem to lag behind. But Joel Schindall and his team at M.I.T. plan to make long charge times and expensive replacements a thing of the past–by improving on technology from the past.

They turned to the capacitor, which was invented nearly 300 years ago. Schindall explains, “We made the connection that perhaps we could take an old product, a capacitor, and use a new technology, nanotechnology, to make that old product in a new way.”

Rechargable and disposable batteries use a chemical reaction to produce energy. “That’s an effective way to store a large amount of energy,” he says, “but the problem is that after many charges and discharges … the battery loses capacity to the point where the user has to discard it.sony vgp-bps2c,vgp-bps2a”

But capacitors contain energy as an electric field of charged particles created by two metal electrodes. Capacitors charge faster and last longer than normal batteries. The problem is that storage capacity is proportional to the surface area of the battery’s electrodes, so even today’s most powerful capacitors hold 25 times less energy than similarly sized standard chemical batteries.

The researchers solved this by covering the electrodes with millions of tiny filaments called nanotubes. Each nanotube is 30,000 times thinner than a human hair. Similar to how a thick, fuzzy bath towel soaks up more water than a thin, flat bed sheet, the nanotube filaments increase the surface area of the electrodes and allow the capacitor to store more energy. Schindall says this combines the strength of today’s batteries with the longevity and speed of capacitors.

“It could be recharged many, many times perhaps hundreds of thousands of times,sony vgp-bps5a ,vgp-bps2c and … it could be recharged very quickly, just in a matter of seconds rather than a matter of hours,” he says.

This technology has broad practical possibilities, affecting any device that requires a battery. Schindall says, “Small devices such as hearing aids that could be more quickly recharged where the batteries wouldn’t wear out; up to larger devices such as automobiles where you could regeneratively re-use the energy of motion and therefore improve the energy efficiency and fuel economy.”

Schindall thinks hybrid cars would be a particularly popular application for these batteries, vgp-bpl2 ,vgp-bps2,especially because current hybrid batteries are expensive to replace.

Nanotube filaments on the battery’s electrodes

image: MIT/Riccardo Signorelli

Schindall also sees the ecological benefit to these reinvented capacitors. According to the Environmental Protection Agency, more than 3 billion industrial and household batteries were sold in the United States in 1998. When these batteries are disposed, toxic chemicals like cadmium can seep into the ground.

“It’s better for the environment, because it allows the user to not worry about replacing his battery,” he says. “It can be discharged and charged hundreds of thousands of times, essentially lasting longer than the life of the equipment with which it is associated.”

Schindall and his team aren’t the only ones looking back to capacitors as the future of batteries; a research group in England recently announced advances of their own.Sony vgp-bps2c, But Schindall’s groups expects their prototype to be finished in the next few months, and they hope to see them on the market in less than five years.

Schindall’s research was featured in the May 2006 edition of Discover Magazine and presented at the 15th International Seminar on Double Layer Capacitors and Hybrid Energy Storage Devices in Deerfield Beach, Florida on December 2005. His research is funded by the Ford-MIT Consortium.



Nanotube Monitors