Hitachi Ltd. (Hitachi) released a quartz glass storage technology jointly developed with Kyoto University on October 20. It can record 100 layers of digital data with the same recording density as Blu-ray discs in quartz glass, and verify that reading and writing are normal. Hitachi stated that quartz glass has excellent water resistance, and no deterioration in memory data is achieved at 1000 degrees Celsius for 2 hours. The shelf life of the quartz glass exceeds 300 million years and it is expected to be used for ultra-long-term storage and to preserve important historical relics. Public documents, human heritage and other information. Hitachi has developed a technology that can store 26 layers of data in quartz glass in 2013. This is equivalent to the recording density of DVD. The 100-layer data recording density this time depends on the newly developed spherical aberration. Correction lenses, and de-noise reading algorithms that can reduce data read error rates. The above technique uses advanced optical microscope technology to improve the condenser lens so that the laser light can reach the deep position of the quartz glass accurately. The latter uses a separate algorithm to reduce the read signal error rate to 1/1000 or less. Hitachi and Peking University have verified in the experiment that 50 layers of data can be recorded on both sides of the quartz glass, each with a pitch of 60 μm, a total of 100 layers, and a recording density of 1.5 GB per square inch. The R&D results were published in the press conference on the same day as the International Optical Information Storage Seminar ISOM 2014 held in Hsinchu, Taiwan. From now on, the two parties will continue to carry out relevant experiments for the purpose of improving recording density and practicality. In addition, SINEN2, a deep space communication experimental machine developed by Kyushu Institute of Technology and Kagoshima University, will also carry this storage technology, quartz glass, into the universe. Self-Priming End Suction Centrifugal Pump Self-Priming End Suction Centrifugal Pump,End Suction Centrifugal Pump,Horizontal Pipe Pump,End Suction Water Pump Shanghai NuoSai Pump Manufacturing Co., Ltd. , https://www.nuosai.net