在因特网时代 ,世界的每个角落都能轻易地使用大量信息和多媒体。数据存储成本降低 ,更小的器件具有更好的存储能力 ,为技术革新创造了条件。硬磁盘驱动器、光盘和半导体存储器等传统技术的进展已能跟上对更大量、更快速存储的要求。然而 ,有明显的迹象表明 ,上述面存储技术已 In the Internet age, large amounts of information and multimedia are easily used in every corner of the world. Lower data storage costs, smaller devices have better storage capabilities, creating the conditions for technological innovation. The advances of traditional technologies such as hard disk drives, optical disks and semiconductor memories have been able to keep up with the demands for larger, faster storage. However, there are clear indications that the above face storage technology has been