Journal of science and technology Beijing on Aug. 2 (xinhua Chang Lijun) recently, the Turkish bill deakin university researchers will a common printing paper sandwiched between two layers of graphene membrane (composed of multilayer graphene), make it into a flexible electronic display. They will also be graphene configuration into multiple pixel patterns, the paper folded into a three-dimensional shape, in the above printed color design, show the different for technology of another kind of effect.
According to the American association of electrical and electronics engineers (IEEE) "spectrum" web site reported recently in the flexible display, graphene itself has a variety of purposes, such as a replacement for another scarce material indium tin oxide (ITO, a control display pixels transparent conductor), also can be used in the display floor as electrodes.
Researchers published in the journal photonics paper, according to the current optoelectronic equipment to make paper also has the very big challenge, because the paper surface rough, incompatible with optical materials. And they are graphene as an optical medium electrical configuration, graphene by giving paper applied bias voltage, triggering graphene ions between the layers, make its light absorption sex change, from transparent black or black and transparent. , the authors of the paper KeSiKun can kappa, said, this system can be used as a framework, make ordinary printing paper photoelectric display.
They use chemical vapor deposition method in the metal surface grow graphene, erosion to metal in the water after leaving a thin layer of graphene membrane, and then put the paper into the water, the graphene film transferred to paper. In the experiments, the display from transparent to black is less than half a second, and out of the darkness to transparent to 4 seconds, the signal system is more suitable for do not need to image transform, but compared with the usually display, the refresh rate is too slow.
Can kappa, 'says previous development based on electrophoretic particle movement, cause the color dye and liquid electricity principle of the technology such as wet, also can realize the effect of electronic paper, has great potential in the field of consumer electronics, but these technology and traditional typed made of cellulose are incompatible. Their development is a kind of common printing paper on electricity display information display.
, according to researchers plan to further develop a fully functional electronic paper, there are pixels and integrated driving circuit, and hope that the technology can also be used in roll shaft manufacturing process. (the original title: graphene make plain paper a flexible display)
