CD-R存储介质选择经验谈

目前在教育、科研及图书档案等领域中,CD-R碟片被广泛用于数据存储,使得碟片的选择成为信息安全存储的一个重要环节。本文从碟片的组成及刻录机理出发,结合计算机软件,论述了CD-R碟片的选择方法,为信息的安全存储提供借鉴。     

用光盘现场记录地震数据的一点想法

当前，地震勘探野外要集的数据，均要用磁带记录方式，而记录在磁带上的数据容易丢失，保存期很有限。文章提出现场用光盘了代磁带直接记录地震数据的想法，并对其优越性，可行性及改造现有的地震仪器实现光盘记录地震数据的方法进行了讨论。     

可录CD无机存储介质──AgOx的研究

本文研究了AgOx薄膜的光学性能、分解过程和记录特性．研究表明，在氩气分压为0.67Pa和氧气分压为2.0Pa的条件下，反应溅射制备的AgOx薄膜是非晶态的，在400℃热处理时，完全分解为Ag;本文成功地对AgOx薄膜进行了静态写入实验，AgOx有望成为一种新的CD－R存储介质．     

The optical recording and thermal analysis of compact disc-recordable

Recently various types of optical discs have been developed and used. Compact Disc Recordable (CD-R) is a disc where enormous amounts of digital data can be recorded and played in currently used CD player or CD-ROM drive. The reflection and absorption rate of the laser beam in the layers of CD-R were numerically calculated. The laser beam energy absorbed in the recording layer is converted to heat, and this is transferred to the neighboring layers. The transient temperature distributions in the layers on recording were obtained numerically using ANSYS software. The written spot in the recording layer was heated far above its decomposition temperature and part of the polycarbonate substrate was heated above its glass transition temperature. After optical recording, the image of the recorded area was obtained by using an atomic forces microscope (AFM). The recording mechanism of CD-R was discussed with these numerical calculations and experimental observations.     

The optical characteristics in the layers of Compact Disc-Recordable

The optical characteristics of the laser beam in the layers of Compact Disc Recordable (CD-R) has been studied. The optical disk which is compatible with currently used CD-drive consists of transparent polycarbonate (PC) substrate, organic dye recording layer, reflective gold layer, and ultra-violet (UV) cured protecting layer. For proper design of the layer structure, modeling of the optical characteristics in each layer is necessary. The reflection and local absorption of the laser beam energy in the layers of the disk were numerically calculated. The reflection of the disk oscillates with the thickness of dye layer due to the interference in the multilayers. The oscillation magnitude and period depend on the complex refractive index of the material. The energy absorption profile in the recording layer is dependent on the thickness of the layer.     

CD-R盘片生产的质量检测与控制

根据 CD- R生产工艺流程 ,阐述各工序的质量检测要素及工艺控制方法 ,简要分析影响盘片质量的主要因素。     

我国国产化CD—R染料的研发

染料国产化可大大压缩CD—R成本。染料工艺是CD—R盘片复制的核心工艺。运用中试过程筛选CD—R染料 ,并应用流体力学、薄膜光学、光谱化学对染料工艺进行分析。     

Norm-conserving pseudopotential database (NCPS97)

Norm-conserving pseudopotential database (NCPS95) was prepared in 1995. This database is distributed by CD-R media. NCPS95 is updated in order to be available for 5d transition metals etc. In this database, lattice properties and electronic band structures without ghost bands are checked.     

CD-R记录原理

通过对CD-R技术的研究,从其规格、记录等内容简要介绍了CD-R的介质特性、记录原理和记录方法,提供一些有效的实际经验。     

光盘加密刻录的方法及实现

论述可记录光盘在刻录过程中进行加密处理的方法,并给出其加密、解密实现的过程。