国际商用机器公司(IBM)的研究人员已推出一种功能为1000亿数位/平方时的新型写、读、擦数据存贮介质。这种称为光子栅的物质将使极高密度录下的数据可作不破坏读出。对多数以往研制的材料来说,高密度录下的数据经反复读出后就遭到破坏。IBM的方法是,用不同波长的激光将有机分子或金属离子基质的磨光、受激和离子化状态作互换。对一个系统来说,一个氯化钡氧化晶体掺上了0.05％原子含量的钐。其余则在代谢酸中用0.01摩尔％的咔唑。涂厚1mm的基质在液氦温度下淬火。这就使晶体上形成缺陷,使掺杂剂离子或分子上形成许多细微区别的微环境。约1000种掺杂剂离 Researchers at International Business Machines Corporation (IBM) have introduced a new type of write, read and wipe data storage media with 100 billion bits per square inch. This type of material, called a photonic grating, will allow very high-density recorded data to be read without damage. For most previously developed materials, data recorded at high density was destroyed after repeated readings. IBM’s approach is to use different wavelengths of laser to organic molecules or metal ion substrate polished, stimulated and ionized state for the exchange. For a system, a barium chloride oxidized crystal incorporates samarium at 0.05% atomic content. The rest is used in the metabolic acid 0.01 mol% carbazole. Thick 1mm substrate quenched at liquid helium temperature. This creates defects in the crystal, creating many subtle differences in dopant ions or molecules. About 1000 dopant away