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1.
可录型光盘与菁染料光存储媒体的研究进展   总被引:6,自引:0,他引:6  
本文简介绍了可录型光盘光学数据存储过程和作为存储介质同的菁染料5的稳定性及其应用研究概况,学一些新型光存储技术作了简要评述,并讨论了可录型光存储材料的发展趋势。  相似文献   

2.
光记录有机材料   总被引:1,自引:1,他引:0  
第二次世界大战后,发达国家不但大量地生产一般性商品,还大量生产信息。视听材料是我们最熟悉的。信息的储存、传播技术要求发展新的材料。我们所熟悉的录音带、录象带等信息存储技术,一直受磁学的支配,但最近却  相似文献   

3.
本文主要介绍三种不盘的结构,激光写,特别从材料的角度对WORM和EDRAW技术的光记录材料及高分子盘基材料目前的发展状况和趋势作一概括讨论,同时对光数据存储技术的发展新动向也予以简单的介绍。  相似文献   

4.
本文研究了在卤化银光敏层的基础上构建多层CD盘的原理,研制了将影像中的银转化为产生荧光产物的方法,从而在应用荧光读取信息时可极大地提高其信噪比.研究后作者得出结论,传统的卤化银照相术能在制造多层光盘CDLROM中得到应用.  相似文献   

5.
氧钒酞菁在激光光盘系统中的应用研究   总被引:3,自引:0,他引:3  
氧钒酞菁在激光光盘系统中的应用研究董长征,沈永嘉,任绳武(华东理工大学精细化工研究所上海200237)袁海俊(中国科学院上海光学精密机械研究所上海201800)关键词:信息储存,激光光盘,功能染料,氧钒酞菁自1972年Philips公司推出激光光盘(...  相似文献   

6.
曹艳霞  李光吉强伟 《化学进展》2008,20(11):1810-1815
光盘是一种以非接触方式记录/再现信息的信息记录介质,主要由基板、记录层和保护层组成。其中,基板材料所用的光学塑料是光盘生产的主要原材料,对光盘的性能和成本构成至关重要。本文综述了聚合物光盘基板材料的研究现状及其发展趋势。光盘基板材料主要包括传统的聚碳酸酯(PC),聚甲基丙烯酸甲酯(PMMA)、环氧树脂以及近年发展起来的非晶环烯烃聚合物。研制具有较低的双折射、吸湿性、固化成型收缩率以及较高的存储密度和存储寿命的光盘基板材料是聚合物光盘基板材料的一个重要研究领域。  相似文献   

7.
王军锋 《大学化学》1996,11(1):39-40
本文简要介绍了一个英国多媒体化学光盘软件的来源,内容,特点,安装方法及设计运行的计算机的硬件指标,较为详细地阐述了周期表中心法为代表的三种获取信息的手段。  相似文献   

8.
光盘是一种以非接触方式记录/再现信息的信息记录介质,主要由基板、记录层和保护层组成.其中,基板材料所用的光学塑料是光盘生产的主要原材料,对光盘的性能和成本构成至关重要.本文综述了聚合物光盘基板材料的研究现状及其发展趋势.光盘基板材料主要包括传统的聚碳酸酯(PC)、聚甲基丙烯酸甲酯(PMMA)、环氧树脂以及近年发展起来的非晶环烯烃聚合物.研制具有较低的双折射、吸湿性、固化成型收缩率以及较高的存储密度和存储寿命的光盘基板材料是聚合物光盘基板材料的一个重要研究领域.  相似文献   

9.
谈双面光盘的粘合   总被引:1,自引:0,他引:1  
根据现有的粘接技术和自动化生产线的特点,介绍了DVD双面盘粘合胶的选择以及一些实验粘合工艺。  相似文献   

10.
王润梅 《化学教育》2005,26(8):4-6,44
光盘按其功能可以分为3种:只读式、可录式和可擦重写式。本文对其组成、结构及记录和读取信息的原理进行了简单介绍。  相似文献   

11.
杨学勇  吴增基 《合成化学》1993,1(2):141-144
为了得到具有高的临界转变温度的有机超导体,我们设计并合成了新的有机电子给体Twin—ET 和[2,2]-ET—Phane。并对 Twin-ET 的性质进行了研究。  相似文献   

12.
Abstract  Research into organic field effect transistors (OFETs) has made significant advances—both scientifically and technologically—during the last decade, and the first products will soon enter the market. Printed electronic circuits using organic resistors, diodes and transistors may become cheap alternatives to silicon-based systems, especially in large-area applications. A key parameter for device operation, besides long term stability, is the reproducibility of the current–voltage behavior, which may be affected by hysteresis phenomena. Hysteresis effects are often observed in organic transistors during sweeps of the gate voltage (V GS). This hysteresis can originate in various ways, but comparative scientific investigations are rare and a comprehensive picture of “hysteresis phenomena” in OFETs is still missing. This review provides an overview of the physical effects that cause hysteresis and discusses the importance of such effects in OFETs in a comparative manner. Graphical abstract     相似文献   

13.
Organic field-effect transistors are of great importance to electronic devices. With the emergence of various preparation techniques for organic semiconductor materials, the device performance has been improved remarkably. Among all of the organic materials, single crystals are potentially promising for high performances due to high purity and well-ordered molecular arrangement. Based on organic single crystals, alignment and patterning techniques are essential for practical industrial application of electronic devices. In this review, recently developed methods for crystal alignment and patterning are described.  相似文献   

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Ab initio UHF wavefunctions for organic radicals have been obtained with different basis sets, before and after spin annihilation. It has been verified that the shapes of the electrostatic potential surfaces of these radicals are basis and spin contamination independent, at difference from hfs coupling constants.  相似文献   

20.
With the aid of a central composite face-centered design, an ion chromatographic method was developed and optimized for analyzing organic acids in tobacco. A Dionex-100 ion chromatograph with an ion suppressor and a conductivity detector, and a Bio-Rad Aminex HPX-87H column were employed. Only 13 analyses were required to optimize two factors: column temperature and eluent strength. Two sets of optimal conditions for separating nine acids were found: 1.8 mM HFBA eluent and 42 °C column temperature, and 0.8 mM HFBA eluent and 50 °C column temperature. The flow-rate was 0.6 ml min−1 and the analysis time was 18 min or less. A sample preparation procedure included extraction of 2 g ground tobacco with 100 ml of 5 mM sulfuric acid solution for 3 h, filtration of the extract, and dilution of the filtrate 10-fold with deionized water.  相似文献   

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