The new technology will help extend the battery life of mobile devices




Researchers from the University of Texas at Dallas have created a technology that can be the first step on the road to wearable computers with independent power sources. The first variant solutions – smart phones, which do not “die” after a few hours of active use.

As described in an article in Nature Communications, the technology uses the power of a single electron for energy management within the transistors that form the basis of most modern electronic systems.

Researchers from the School of Engineering and Computer Science Erik Jonsson found that if you add a special atomic thin layer film transistor, this layer can act as a filter for the energy that passes through it at room temperature. Final signal exceeded the standard indicators in six or seven times. Such devices will use less power, but have a strong signal.

“The whole semiconductor industry is looking stip devices, as they are the key to a small powerful mobile devices with multiple functions that work fast, but do not involve a lot of battery power – Chiyung says Kim, a professor of materials science and engineering Jonsson School and author of the work. – Our device – one of the possible solutions. ”

Engaging unique thin and behavior of an electron – is most energy-efficient method for transmitting signals in the electronic devices. Since the signal is so small, it can easily blend with the thermal noise at room temperature. To see this quantum signal, engineers and scientists who create electronic devices tend to use external cooling system to compensate for the thermal energy in the electronic environment. Filter, created by scientists from the University of Texas, effectively filters out the thermal noise.

Dr. Kondzhey Cho, professor of materials science and engineering, believes that the transistors are made on the basis of the filtering technology could revolutionize the semiconductor industry.

“Given the way the cooling is distributed in modern transistors, there are some restrictions on how much can be small consumer electronics, – says Cho. – We have developed a technique for cooling of electrons from the inside, thus reducing the operating voltage, thus can create a smaller and more energy-efficient devices. ”

Every time a device like a smartphone or tablet performs calculations, it consumes electricity. Reduction in the operating voltage means a longer life such products. Less demanding energy computers will be literally putting on clothes and they will not require external energy sources.

To create such a technology, researchers added thin film of chromium oxide on the device. Such a layer at room temperature, filters are cold stable electrons and ensures stable operation. Typically, in such cases, stability is achieved by cooling the entire electronic semiconductor device to cryogenic temperatures.

Another innovation that was used to create this technology – it is a vertical layering system that will be the practical, the smaller the device.

“One way to reduce the device – make it vertical, so that the current will flow from the top down rather than left to right”, – says Kim.

Laboratory tests showed that the device is at room temperature, has an output signal electrons identical conventional device at a temperature of -227 degrees Celsius. The researchers also plan to test this technique on the electrons, which work in optoelectronics and spintronics.

The next step would be the spread of the filtering system in the field of semiconductors, produced by technology CMOS.

“Electronics last worked on vacuum tubes. These devices are large and require much energy. Then the field is moved in the direction of the bipolar transistors fabricated with CMOS. Now we are again faced with an energy crisis, and it is one of the solutions to reduce the energy consumption of devices that are becoming less and less. ”


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