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Mesonstructured Composite Materials for Multibit-per-Site Optical Data Storage

机译:用于每位多位光数据存储的介孔结构复合材料

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An approach for multibit-per-site optical data storage has been proposed and demonstrated using mesostructured composite films incorporated with uniformly dispersed photoacid generator and pH-sensitive dye molecules. Upon light illumination, photoacid generator molecules produce acid, which induces a change in the absorption property of pH-sensitive dye molecules. Because the amount of the generated acid is proportional to the illumination time, the resulting change in the absorption property of mesostructured composite films varies as a function of the illumination time. This function between the absorption property of mesostructured composite films and the illumination time can be used for multibit-per-site optical data storage. Recording is performed by using certain discrete values of the illumination time to represent information bits. Reading out is achieved by measuring the absorbance of composite films at a particular wavelength, from which the stored information bits can be determined. In general, N-bit-per-site storage can be realized using 2~N discrete values of the illumination time. This multibit-per-site approach for optical data storage is compatible with the current single-bit-per-site technology used for compact disks and digital versatile disks, and will provide significantly larger optical storage capacity. It is also suitable for two-photon multilayer optical data storage if the photoacid generators and pH-sensitive dyes are properly designed.
机译:已经提出了一种用于每位多位光学数据存储的方法,并使用了掺有均匀分散的光酸产生剂和pH敏感染料分子的介孔结构复合膜进行了演示。在光照下,光酸产生剂分子产生酸,从而引起pH敏感染料分子吸收特性的变化。因为产生的酸的量与照明时间成正比,所以介孔结构复合膜的吸收性能的最终变化随照明时间而变化。介孔结构复合膜的吸收性能和照明时间之间的这种功能可用于每位多位光学数据存储。通过使用照明时间的某些离散值来表示信息位来执行记录。通过测量特定波长下复合膜的吸光度来实现读出,从中可以确定存储的信息位。通常,使用2〜N个照明时间离散值可以实现每位N位存储。这种用于光数据存储的每站点多位方法与当前用于光盘和数字通用磁盘的每站点单位技术兼容,并将提供更大的光存储容量。如果光酸产生剂和pH敏感染料的设计正确,它也适用于两光子多层光学数据存储。

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