The Techy Blog for the Tech Freaks

Archive for December, 2009

4G technologies or fourth generation technologies are the technologies used for fourth generation wireless communication technologies. Fourth generation wireless technologies are designed to serve wireless needs on a full-fledged IP based mechanism. The key features of 4G technology is the ability to communicate in very high speed and the enhanced security.

Another important feature of 4G technology is the ability to facilitate high quality video transmission. 4G technology powered machines will be able to download movies or songs at tremendous speed in a real time environment.

The transmission rates of data on mobile phones are expected to cross 20 mbps and it could be estimated that the data transfer rate of 20 mbps is approximately ten times faster to 3G mobile broad bands. As far as connection seeds are concerned, the performance of 4G will be approximately 200 times faster to current 2G mobile broad bands and approximately 15 times faster than any ASDL service.

Bluetooth 3.0 can be named as one of the latest technological innovations in the cell phone arena. With impeccable performance and very high data transfer rates, Bluetooth 3.0 technology will be shortly incorporated in mobile phones. Bluetooth 3.0 specifications will shortly be released this year, and is going to hit the mobile shelves in early 2010.

The data transfer rate of Bluetooth 3.0 is the beigest advantage of its specifications. Bluetooth 3.0 specifications claim that, data can be transferred as fast as 480 mbps. Within a range distance of 10 meters, Bluetooth 3.0 specifications can communicate or transfer data at a speed of 100 mbps. Apart from all these, Bluetooth 3.0 spec has the ever wanted feature of low power mode and this feature will facilitate quite a lot of applications with the mobile phones. The backward compatibility mode of Bluetooth 3.0 enables older devices to easily communicate, and is unimterrupted.

Stuart Parkin- a former IBM think tank is now developing a three dimensional memory system which is good enough to replace all two dimensional memory systems. In fact, all memory systems are two dimensional at present, but a three dimensional memory system implemented with the help of nano wires will define next generation memory chips and hard drives.

If you go for a comparison, you would find that this race track memory system has a very huge storage capacity when compared to magnetic tapes and speed is lot higher when compared to flash chips. When comparing the performance of racetrack chips, one would find that it is way ahead or superior to magnetic tapes and flash chips. All is done with the help of a set of nano wires, arranged in U shape adjacent to each other. Electric current is passed through the wires which produce desired effects helpful for reading and writing data.

Mr. George Whitesides, professor at Harvard University has developed a diagnostic tool which is very easy to use and absolutely cheap to afford. This tool of Prof. George is turning out be very much useful and scientific world consider this invention as a boon to mankind since, the cheap diagnostic tool can prove to be immensely helpful for millions of poor people around the globe. Coupling two technologies-one being the most modern and the other being the oldest ever, the professor defines a solution which is very much practical.

The professor uses the wide opportunities in micro fluidics and the usage of paper to derive at a unique solution. The device has only the size of a postage stamp and is made of paper. The square shaped material obviously has edges, and these edges when dipped into a blood sample will collect it soon and route it to the channels for testing.

Zhong Lin Wang, a material scientist at Georgia tech has derived a new formula with the help of peizo electric effects. Nano scale sensors can be used to detect the minutest of aspects. It can be used to detect the molecular level diseases in blood and in other human systems. But the integrated systems required for the generation of power for all nano scale sensors are too big and Zhong Lin Wang suggests an alternate method for this.

All crystalline materials, when applied, mechanical stress will produce electric power. This is a theory proposed and proved long ago and Zhong Lin Wang has taken up the challenge of producing the same electric power at the nano scale level. His initial experiments turned out to bring positive results and he is on a mission to produce great results at higher level. Tests are always crucial, and like the say ides change our future.