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Transparent memory chip

12.04.2012

Rice University scientists have created a flexible transparent memory chip. The chip is based on common silicon oxide, which will allow in the future to create inexpensive flexible transparent mobile phones, "smart" paper and original storage media. During the presentation of the invention at the 243rd National Meeting of the American Chemical Society in San Diego, the developers explained that the new type of memory can be combined with transparent electrodes for flexible touch screens and transparent integrated circuits and batteries developed in recent years in other laboratories.

Transparent Memory is based on a 2010 discovery. Then scientists discovered that a powerful electric charge, passed through ordinary silicon oxide, forms channels from pure silicon crystals less than 5 nanometers in size.

The electric current first deprives the silicon oxide of oxygen atoms, and then re-forms the electrical circuits and turns the silicon into a non-volatile memory. In this case, a weak electric current does not change the structure of silicon oxide and makes it possible to repeatedly read information. It's funny, but at first, scientists used a combination of graphene and silicon oxide and believed that the "wonderful" properties of the new memory are associated with graphene. However, later it turned out that the properties are retained even in the absence of a graphene film.

The advantage of this technology is the use of silicon oxide, widely used in the electronics industry, which is currently mainly used as an insulator. The new memory chips are not only flexible and transparent, they are also quite durable. For example, they can be folded like a sheet of paper or heated to over 500 degrees Celsius. What's more, thanks to their 1D architecture, the new chips are XNUMX gigabyte larger in size and even smaller than conventional flash memory. Thanks to the transparency of a new type of memory, huge opportunities open up for electronic device designers. So, "smart" glass, consisting of transparent electronics, can be used to make tablet computers, "flash drives", mobile phones, window panes, glasses, complex optical devices, mechanical insects, windshields of aircraft, possibly spaceship windows and many other electronics. . In addition, if you equip such devices with solar panels, they can be charged even during use.

The new transparent memory was planned to be tested aboard the International Space Station to evaluate performance under cosmic radiation conditions. Last year, 44 chips were loaded onto the Russian cargo ship Progress, but in August 2011 it failed to take off and crashed. The scientists plan to send the chips to the ISS in July 2012.

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