5G : Next Evolutionary Wireless Standard

5G_Life Changing

With Super fast 4G mobile data service both coverage and speed capabilities, we all wonder, what more 5G would do?? 5G is one of the most discussed technologies in this decade ,but do we really need it?? Yes, is my answer as I believe it’s the foundation for the next technological revolution. .. Let’s have a close look of what actually 5G is…

The next evolutionary step in mobile communication technology will hit the market by 2020 and is fondly called 5G. 5G simply stands for fifth generation and refers to the next and newest mobile wireless standard based on the IEEE 802.11ac standard of broadband technology, although a formal standard for 5G is yet to be set. The main difference compared with today’s 4G and 4.5G (LTE advanced) is beyond data speed improvements, it will be focused on IoT and critical communications applications.

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ISRO With A Perfect Solution To Fuel Crisis In India

isro Hybrid vehicle

After invading the skies, Indian Space Research Organization(ISRO) ,is now focusing on the automobile space with an emphasis on renewable energy. Since vehicles using fossil fuels persistently bring serious problems to environment and life. Electric vehicles are considered the future of transport. But the emissions are just transferred from the exhaust of the vehicle to the chimneys of the power plant. So Solar and Electrical energy based hybrid vehicles will provide the most effective and viable long-term solution by using renewable energy sources for mobility.

ISRO has been working on a number of sustainable initiatives in recent times. They recently launched a solar calculator app, that will help people install solar panels most optimally to derive energy. Now  the solar hybrid vehicle was successfully demonstrated in a test drive, including an uphill drive. Solar energy is available in abundance for free , and it is also a non-polluting source of energy. So, ISRO might solve a major problem in the electric vehicles.

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Is Jack fruit a substitute staple food??

Jackfruit

Which fruit is the largest tree fruit in the world, do you think you could get the answer? Yes, if u said Jackfruit, then u r right. Our own jackfruit. Jackfruit is the largest known tree borne fruit. Even a small jackfruit weighs in at 10-15lbs (5-7kg), and farmers have recorded specimens of more than 100lbs (45kg). Jackfruit is believed to have originated in Southern India thousands of years ago,now cultivated worldwide in the tropical regions of the Indian subcontinent, Thailand, Malaysia, Indonesia and Brazil for its fruit, seeds, and wood. The tree grows best in tropical humid and rainy climates but rarely survives cold and frosty condition.

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New State Of Matter Is Here…

The Jahn–Teller effect, sometimes also known as Jahn–Teller distortion, describes the geometrical distortion of molecules and ions that is associated with certain electron configurations.

How many states of matter do you know about? It’s not just solids, liquids, gases, and maybe plasmas that we have to think about when we talk about the states of matter. Beyond these there’s an entire catalogue of matter alternatives: Bose–Einstein condensate, degenerate matter, supersolids/superfluids, quark-gluon plasma, etc. The difference is that all those alternatives are lab-created and don’t have much place out in the real world of nature. Researchers at Japan’s Tohoku University came up with an entirely new state of matter with an unusual combination of properties—insulator, superconductor, metal, magnet. The team, led by Kosmas Prassides, says they’ve created what’s called a Jahn-Teller metal by doping rubidium, a strange alkali metal element, into buckyballs, a pure carbon structure which has a spherical shape from a series of interlocking polygons.

Superconducting lattices of fullerides – C60 plus three alkali-metal atoms – have been studied for more than two decades, and provide an interesting test bed. This is because the distance between fulleride molecules and hence the electronic properties of the material can be adjusted by applying pressure to the material or doping it with different kinds of atoms.

The new state was found by changing the distance between neighbouring buckyballs by doping the material with rubidium. While they were tweaking the pressure between the buckyballs, the team came across a phase shift that transformed the material from an insulator into a conductor, a process called the Jahn-Teller Effect that was first predicted in 1937. Appropriately, the team is calling this novel material a Jahn-Teller metal. Jahn-Teller effect is a process used in chemistry to describe how at low pressures, the geometric arrangement of molecules and ions in an electronic state can become distorted.

The team’s discovery is the first time anyone has ever witnessed the Jahn Teller effect – the change from an insulator to a conductor – in action. The researchers hope that discovery of a new state of matter in a material that appears to be an insulator, superconductor metal and magnet all rolled into one, could lead to the development of more effective high-temperature superconductors. This new state of matter allows scientists to transform an insulator, which can’t conduct electricity, into a conductor by simply applying pressure.

By applying or removing pressure, it’s possible to boost the conductivity of what may have been an insulator at lower pressures. High pressure: conductivity. This is what the rubidium atoms do: apply pressure. Usually when we think about adding pressure, we think in terms of squeezing something, forcing its molecules closer together by brute force. But it’s possible to do the same thing chemically, tweaking the distances between molecules by adding or subtracting some sort of barrier between them—sneaking in some extra atoms, perhaps.

Jahn-Teller metal
In the fig. the alkali metal rubidium (pictured as blue spheres, above) occupy the vacant holes in between the polygons, changing the distance between neighboring buckyballs. This resulted in the highest achievable temperature for the onset of superconductivity: around 35 K or -238.15 degrees Celsius. That’s still very cold, yes, but it’s an improvement.

What happens in a Jahn–Teller metal is that as pressure is applied, and as what was previously an insulator becomes a metal, the effect persists for a while. The molecules hang on to their old shapes. So, there is an overlap of sorts, where the material still looks an awful lot like an insulator, but the electrons also manage to hop around as freely as if the material were a conductor. This is important because this transition from insulator to metal is also a transition from insulator to potential superconductor. The resulting metal just needs low enough temperatures and all of a sudden its electrons start pairing up and skipping around, with the result being a sudden drop to exactly zero electrical resistance. This is obviously a very desirable property. I.e. Jehn-Teller metals involve some other electron pairing mechanism, that might mean the possibility of superconductivity occurring at not-so-cold temperatures.
Superconductors are a large and diverse group of materials that offer zero resistance to electrical currents when cooled below a critical temperature (TC). Due to lack of resistance there is no loss of energy either in form of heat or sound or any other form. In normal cases when metals are used to transmit electricity there is electrical resistance in the form of heat which results in loss of energy. On the other hand if a material is superconductor of electricity then electrons pair up and start moving throughout the superconducting materials without any resistance and hence no loss of energy. However, scientists have seen that superconductivity can be achieved only at relatively higher temperatures i.e. very cold temperature.

What makes this discovery so significant is that from here, there’s one more step required to turn the material into a superconductor, a material with zero resistance, which revolutionise how we use and produce electricity. If the complete potential of superconductors is realized, we may solve many major problems related to energy in the world.

Hairware

Hairware Is A New Wearable Technology That Lets You Operate Your Smartphone Via Your Hair

Don’t be surprised when a woman absentmindedly strokes her hair in public. She might be actually activating any one of her smartphone apps… Though sounds unlikely, it is possible now. A Brazilian inventor, Katia Vega, has developed an innovative new wearable gadget that allows users to discreetly control electronic devices by just stroking their hair. Continue reading “Hairware”

The Li-Fi: Internet Revolutioner

LiFi is a wireless optical networking technology that uses light-emitting diodes (LEDs) for data transmission

Due to the increasing demand for wireless data communication, the available radio spectrum below 10 GHz (cm-wave communication) has become insufficient. The wireless communication industry has responded to this challenge by considering the radio spectrum above 10 GHz (mm-wave communication). The answer to increasing frequency congestion as Internet usage continues to rise across the world is provided by Light-Fidelity (Li-Fi). It’s a very exciting technology that has been on our radar since Professor Harald Hass gave a TED talk on the topic back in 2011. Continue reading “The Li-Fi: Internet Revolutioner”

Eye cancer Detection Using a Smartphone…

. The pupil of the child’s eye will appear bright white in the photo, in contrast to the seemingly healthy-looking eye in the poster.

New report suggests that it will be easy to spot eye cancer if you have a smartphone. The camera on our smartphones can detect eye cancer generally found in children under the age of five, reveals a British non-profit organisation working in the field of childhood cancer. The flash from a smartphone camera can easily spot retinoblastoma (Rb), the Childhood Eye Cancer Trust (CHECT), which works in the field of childhood cancer, said. Continue reading “Eye cancer Detection Using a Smartphone…”