晶体

The purpose of this paper is to study the dot defect and line defect in photonic crystal, waveguide and demultiplexer.

本文主要研究了光子晶体中的点缺陷和线缺陷，以及由缺陷构成的光子晶体波导和分频器。

Oxygen contamination is effectively overcome by doping the raw materials with deoxidant during the process of crystal growth.

本文首次采用添加脱氧剂的非真空坩埚下降法生长PbFCl晶体，有效地控制了氧污染对PbFCl晶体生长的影响。

In this paper, to begin with the concept of PC, the characters of PC are detailedly elucidated.

本文首先从光子晶体的概念出发，详细阐述了光子晶体的特征。

During melting and throughout the crystal growing process the barium acts as a devitrification promoter and creates a layer of devitrified silica on the inside crucible surface in contact with the melt resulting in a lower level of contaminants in the melt and grown crystal.

在熔化以及晶体生长的整个过程中，钡起失透促进剂的作用并且在与熔体接触的坩埚内表面上产生失透二氧化硅层，从而降低了在熔体以及生长的晶体中的污染物量。

All the compounds are characterized by IR and elemental analysis.we design and prepare a bipyridinium supramolecular compound and six coordination compounds, which are also characterized by IR, elemental analysis and X-ray structure analysis. According to X-ray structure analysis, hydrogen bonds and n-n stocking interactions participate in the architecture of three-dimensional framework [H2L1 (NO3)2 (H2O)2]n; one-dimensional zigzag coordination polymer [Hgl21.5CH3OH]n; binuclear metallamacrocycle (HgI2L2)2 3H2O; helical double-stranded one-dimensional coordination polymer [Co2(L2)2-2CH3OH]n; double-stranded one-dimensional coordination polymer [Co2(L3)2-CH3OH-CH3CN]n; and three-dimensional compound [Cu(C5H4NCOO)2(H2O)2]-H2O with hydrogen bonds, three-dimensional coordination polymer {[Cd(C5H6NCOO)2H2O]-DMF}n, which are indirectly obtained from the precursor ligand L3 through metal ion induced the hydrolysis of diamide and self-assembled with the hydrolyzate.

我们首次合成了一个双吡啶鎓超分子化合物和六个过渡金属配合物，并通过IR谱，元素分析和X-ray晶体衍射分析对它们进行了表征。X-ray晶体结构分析表明：超分子化合物[H_2L1·(NO_3)_2·(H_2O)_2]_n是由多种氢键和芳香环间的π-π堆积作用构建的三维无限结构；[HgI_2(L1)·1.5CH_3OH]_n是一维锯齿状配位聚合物；(HgI_2L2)_2·3H_2O是双核金属大环化合物；[Co_2(L2)_2·2CH_3OH]_n是具有一维双螺旋结构的配位聚合物；[Co_2(L3)_2·CH_3OH·CH_3CN]_n为一维双链结构的配位聚合物；以及由非直线形配体L3在金属离子Cu和Cd的诱导作用下发生水解，并且金属离子与水解产物——异烟酸根离子自组装，形成了三维氢键超分子化合物[Cu(C_5H_4NCOO)_2(H_2O)_2]·H_2O和三维配位聚合物{[Cd(C_5H_6NCOO)_2H_2O]·DMF}_n。

The surface morphology visualized by AFM as well as the regularity of the films studied by XRD was also reported.We found that the diazonium group can form H-bond with phenolic hydroxy and the multilayered film from DR and phenol-formaldehyde resin was first fabricated.

并且利用重氮树脂的光反应这一独特性质，发展了组装纳米粒子及羧基功能化纳米管的方法，这将会在制备胶体晶体(胶体粒子规整排列，具有似晶体的结构)和固定纳米管上有所应用。

The structure of AlPO4-5 single crystal has been refined by the SMART 1000 single crystal diffractometer.

用扫描电镜观察晶体的形貌；AlPO4-5分子筛晶体结构通过SMART 1000单晶衍射仪鉴定。

In the single crystal of C60 with a FCC structure,positron mainly appears outside the C60 molecule.The main annihilation space is the interspace between molecules.The calculated positron bulk lifetime in C60 is 352ps, which agrees with experiment value of 356ps in literature.In carbon nanotube bundles with different dimeters,as the diameter of carbon nanotubes increases,the main space where positron appears changes from the interspace of carbon tubes to the space inside carbon tubes,the radio between positron annihilation with valence eletrons and core eletrons becomes larger,the positron bulk lifetime in carbon nanotube increase rapidly first and come to be a constant at the end.The calculated positron lifetime of carbon nanotube with a dimeter of 0.8～1.6ns is 332～470ps,which agrees with the experiment value of 394ps.Positron annihilation has been studied in widly used compound semiconductors.

计算结果表明：在片层结构的石墨晶体中，正电子主要在石墨层间的空隙中湮没，计算出的石墨中的正电子寿命为208 pS，与文献中的实验结果215 ps符合很好；在金刚石单晶中，正电子主要在碳原子之间的空隙中存在并发生湮没，计算出的金刚石中的正电子寿命为115 ps，文献中的实验结果110 ps左右符合；在面心立方结构的C60晶体中，正电子主要在C60分子球壳内外侧及分子之间存在，C60球形分子中心正电子分布很少，正电子的湮没区域集中在C60分子之间的空隙区域，计算出的C60中的正电子寿命为352 ps与文献中的实验结果356ps相符合；对于不同管径碳米管束中的正电子分布，随着碳纳米管直径的增加，碳纳米管束中的正电子由主要在碳纳米管管间的区域出现转变为主要在碳纳米管管内中心的区域出现：碳纳米管束中的正电子与碳原子的价电子的湮没概率变得越来越大，与核心电子的湮没概率变得越来越小；碳纳米管束中正电子的湮没寿命先迅速增大，而后趋于一定值。

The spatial narrative structures in Calvino's fictions can be divided into three types :"the building of two worlds "is the main way in the earlier writing phase of Neorealist and Fairy tale .Dimidiation and mergence is the art feature .It signs that the sense of the world and the creative ideas of the writer start to form;"Synchrony and Juxtaposition "and "Crystal pattern "are the prominent characteristics during his Postmodernism writings phase. The writer takes the complex and diverse form of space art, such as segments、juxtaposition、defamiliarization、crystal's combination and derivatives, ect. to represent the essence of the world, and to exprsee the writer's confusion and efforts to understand and build a sense of it.

卡尔维诺小说的空间叙事结构具有阶段性，可以分为三种不同的类型："两个世界的构建"是早期新现实主义和童话寓言创作阶段的主要方法，二分和弥合是其艺术特点，标志作家世界感和创作观念开始形成；"共时并置"和"晶体模式"则是后现代主义小说创作时期的突出特征，作家以片断、并置、陌生化、晶体组合衍生等复杂多样的空间化艺术形式来表现世界的本质以及自身理解世界、构建意义的困惑和努力。

Methods Acˉcording to the standard YY0290"Intraocular Lens",dioptric power,differentiate rate,axial displacement under presˉsure and optical eccentric distance of10types of intraocularlens were tested.

按照行业标准YY0290《人工晶体》规定的方法对国内外10种一件式或三件式人工晶体的屈光度、分辨率、压缩力下轴向移位和光学偏心等指标进行了测试。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。