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E-Ink breakthrough in electronic ink technology allows electronic ink screens to achieve mixed color display at the same low power consumption level. Scientists discovered that by physically "bending" the film on the surface layer of graphene, the display color of the electronic ink screen can be effectively controlled, and a mechanical pixel "mechanical pixel" is formed on an electronic ink screen such as an electronic reader. Delft University of Technology, Netherlands A group of scientists teamed up with Graphene, a Spanish graphene technology company, and recently published research results in the academic journal Nano Letters.
The main principle is that scientists mainly use the equipment called graphene “balloonâ€. When the scientists deposit two layers of graphene film on a special planar siliceous substrate, the substrate is covered with a circle with a diameter of about 10 nanometers. The cavity can form a graphene balloon - a temporary graphene resonant circular cavity.
The team found that the use of physical means to control the curvature of the graphene film on the cavity can show different colors, such as applying different pressures to the inside and outside of the cavity to control the curvature of these circular graphene films. If the curvature is large enough, the Newton ring phenomenon will be displayed. Dr. Cartamil-Bueno, a doctoral student in the team, said that the technology based on "interferometric modulation" can develop a gradient color electronic ink display. Previously, Qualcomm Toq and other technologies used similar mechanized pixels, but the display material is based on Silicon semiconductor material.
The graphene material technology electronic ink screen technology, because graphene material conductivity is 1000 times that of silicon semiconductor material, so it can more accurately control the color change, provide more flexible and extensive color display performance. The team is expected to exhibit a prototype screen at the MWC conference in Barcelona next year.
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