The electronics industry has led to its limit the capabilities of silicon, the material that forms the heart of every computer, and the carbon has been considered a promising replacement. In particular, a material called graphene (a single layer of carbon atoms arranged in a flat network) could allow electronics to process information and hold radio transmissions 10 times better than silicon-based devices.
However, until now, switching from silicon to carbon has not been possible because experts believed they needed graphene handle in the same way that silicon chips: a single crystal wafer 20 to 30 centimeters in diameter. The largest single-crystal graphene sheets made to date have had a diameter of a few millimeters, so that would not be large enough even for a single chip.
Stephen Chou, Xiaogan Liang and Fu Zengli realized in the laboratory that does not always need a large wafer that they could place small crystals of graphene only in the active areas of the chip. They developed a new method to achieve this goal and have demonstrated functional manufacturing graphene transistors and high performance.
As an example, have built transistors on printed graphene crystals. These transistors have demonstrated high performance: are 10 times faster than silicon transistors in moving "holes" electronic, an important measure of speed.
The new technology could find almost immediate use in mobile phones and other wireless devices that require high energy output. Depending on the level of industry interest, the technique could be applied within a few years to various types of wireless communication devices
However, until now, switching from silicon to carbon has not been possible because experts believed they needed graphene handle in the same way that silicon chips: a single crystal wafer 20 to 30 centimeters in diameter. The largest single-crystal graphene sheets made to date have had a diameter of a few millimeters, so that would not be large enough even for a single chip.
Stephen Chou, Xiaogan Liang and Fu Zengli realized in the laboratory that does not always need a large wafer that they could place small crystals of graphene only in the active areas of the chip. They developed a new method to achieve this goal and have demonstrated functional manufacturing graphene transistors and high performance.
As an example, have built transistors on printed graphene crystals. These transistors have demonstrated high performance: are 10 times faster than silicon transistors in moving "holes" electronic, an important measure of speed.
The new technology could find almost immediate use in mobile phones and other wireless devices that require high energy output. Depending on the level of industry interest, the technique could be applied within a few years to various types of wireless communication devices
0 comments:
Post a Comment