Beyond the World of 0 and 1!Development of Next Generation Light-Controllable Multi-Digit Memory Materials

Under the support of the Ministry of Science and Technology, the research team led by Professors Jan-Chi Yang and Yi-Chun Chen from Department of Physics of National Cheng Kung University (NCKU) has made a significant leap in manipulation of new generation memory material, Bismuth ferrite (BiFeO3). BiFeO3 is a multi-digit memory material that can simultaneously record eight logic states (0-7) in a single memory unit. Compared to the traditional 1 bit memory system (with two operation states, 0 and 1), utilization of multi-digit memory can greatly increase the density of stored information. The NCKU research team successfully develops a novel technology for non-contact optical control of the multiple memory states. With the multi-digit materials and light control technology, the volume of existing memory can be significantly reduced and the energy consumption/dissipation will be further decreased. Upon the application of light controllable multi-digit memory to artificial intelligence development and cloud computing, it not only can reduce the delay time of data reading, but also further the calculation efficiency. This technology is expected to bring revolutionary breakthrough in the trend of miniaturizing multifunctional nano-devices in the near future. This work is published on May 6th in prestigious international peer-review journal “Nature Materials”.

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