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1.
聚硅烷在XeCl准分子激光作用下光降解及亚微米光刻的研究 总被引:4,自引:1,他引:3
采用308nmXeCl准分子激光研究了聚硅烷溶液和聚硅烷薄膜的光降解反应,利用玻璃片为基底,旋转涂布,分别以酚醛树脂和聚氨酯为平坦层,以聚硅烷为成像层和阻挡层,构成双层工艺,进行接近式曝光,用混合溶剂显影,并通过O2-RIE处理,最终得到了亚微米的光刻图形。 相似文献
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pH和温度对亚微米强酸树脂吸附L—赖氨酸的影响 总被引:3,自引:3,他引:0
研究了溶液pH和温度对亚微米强酸树脂离子交换赖氨酸(〉30g/L)的影响,与732强酸树脂进行了对比,并对所得吸附等温线进行了关联,研讨其吸附模型。结果表明:pH对亚微米强酸树脂交换有明显影响,其吸附量远大于732树脂;温度对其影响不大,但引起了交换量极值点向pH值小的方向移动。氢型亚微米强酸树脂的吸附等温线呈现出超当量吸附和多分子层吸附两个特征,并符合de Boer-Zwikker公式,属极性吸 相似文献
3.
亚微米聚合物粒子与赖氨酸的相互作用 总被引:2,自引:2,他引:0
研究了低浓度下(〈20g/L)L-赖氨酸与亚微米级阳离子交换树脂的相互作用,发现其吸附等温线为极化模型吸附等温线,可用de Boer Zwikker公式关联,表现为多分子层吸附。这与(商品)L-赖氨酸在亚毫米阳离子交换树脂上的单分子层的Langmuir等温线有明显差别。 相似文献
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主要讨论了亚微米半导体器件模拟的流体动力学模型方程的建立过程。流体动力学模型由玻尔兹曼传输模型方程的矩推导而来,对玻尔兹曼传输模型采用不同的物理假设和数学近似,可以得到不同形式的流体动力学模型。同时,对各种不同形式的流体动力学模型的相互转换关系进行了系统分析,给出了半导体器件各种输运模型的适用范围等特性,为通用亚微米半导器件模拟软件的模型选择提供了参考依据。 相似文献
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讨论了亚波长光刻条件下的离轴照明和次分辨率辅助图形两种分辨率的增强技术,分析了两种技术的原理,利用光刻模拟软件,针对不同线宽的稀疏线条,对添加次分辨率辅助图形前后的光刻仿真结果进行了对比.研究结果表明,离轴照明技术和次分辨率辅助图形的结合使用,可以显著提高亚100纳米级版图线条的光刻分辨率,增大工艺窗口,降低版图成像对生产工艺参数的要求,对于解决亚波长光刻所带来的亚100纳米级集成电路成像质量下降的问题非常必要. 相似文献
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栅长短于0.2μm的砷化镓(GaAs)金属一半导体场效应晶体管已被我们研制成功。电子束光刻、金属剥离(lift-off)和双层及三层电子束光刻胶等先进技术的应用,获得了亚微米的T型栅,从而改进了场效应管的高频特性。直流测试显示,这种场效应管的跨导高达135ms/mm。 相似文献
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双成像光刻技术是在集成电路制造工艺不断缩小时解决光刻后图形失真问题和提高准确度的最有效的方案之一.在双成像光刻中,需要进行版图分解,将版图中多边形分解为更简单的图形的集合.现有的多边形分解算法不适合应用于双成像光刻,会产生工艺无法接受的薄片,覆盖误差会导致图形断开,与双成像光刻中的版图分解的目标也不同.提出了一种新的版图分解算法,通过引入交叠,消除薄片的产生,同时解决由于覆盖误差引起的图形断开问题;减少分解后的矩形数目,从而减少双成像光刻中颜色分配后的冲突总数,适合用于双成像光刻技术.实验说明该算法有效. 相似文献
9.
枝状聚硅烷的合成与表征 总被引:4,自引:0,他引:4
用“顺点滴式”方法改进了单体合成,较原“全混式”提高了产率,降低了消耗;用Wurtz法以二氯硅烷和三氯硅烷为原料,经“预聚”和“混聚”二种方式合成了枝状聚硅烷。 相似文献
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带二茂铁基聚有机硅烷的研究 总被引:1,自引:0,他引:1
合成了一系列新的二茂铁在侧基、端基和嵌入主链三种类型的聚硅烷,测定了它们的虹外,紫外可见光谱,分子量和电阻率;讨论了二茂铁在聚硅烷的不同位置上对聚硅烷紫外光谱和导电性的影响。同时,测定了聚硅烷与某些电子受体形成CT络合物的紫外可见光谱和导电性,聚硅烷与某些电子受体络合可显著提高导电性。 相似文献
11.
QING Hai-ruo 《成都理工大学学报(自然科学版)》2004,31(6)
The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3~4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰~ -7.8‰, PDB) and matrix dolomites (-6.6‰~ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084~0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078~0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction. 相似文献
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YUJia-shun HEZhen-hua 《成都理工大学学报(自然科学版)》2004,31(6):694-698
AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod… 相似文献
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There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying. 相似文献
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海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化 总被引:9,自引:1,他引:9
本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。 相似文献
15.
Yan Yun’an 《华南师范大学学报(自然科学版)》2014,(6):136-137
Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with 相似文献
16.
Yuriko Aoki 《华南师范大学学报(自然科学版)》2014,46(6):135-135
The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to 相似文献
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The explosive growth of the Internet and database applications has driven database to be more scalable and available, and able to support on-line scaling without interrupting service. To support more client's queries without downtime and degrading the response time, more nodes have to be scaled up while the database is running. This paper presents the overview of scalable and available database that satisfies the above characteristics. And we propose a novel on-line scaling method. Our method improves the existing on-line scaling method for fast response time and higher throughputs. Our proposed method reduces unnecessary network use, i.e. , we decrease the number of data copy by reusing the backup data. Also, our on-line scaling operation can be processed parallel by selecting adequate nodes as new node. Our performance study shows that our method results in significant reduction in data copy time. 相似文献
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R-Tree is a good structure for spatial searching. But in this indexing structure,either the sequence of nodes in the same level or sequence of traveling these nodes when queries are made is random. Since the possibility that the object appears in different MBR which have the same parents node is different, if we make the subnode who has the most possibility be traveled first, the time cost will be decreased in most of the cases. In some case, the possibility of a point belong to a rectangle will shows direct proportion with the size of the rectangle. But this conclusion is based on an assumption that the objects are symmetrically distributing in the area and this assumption is not always coming into existence. Now we found a more direct parameter to scale the possibility and made a little change on the structure of R-tree, to increase the possibility of founding the satisfying answer in the front sub trees. We names this structure probability based arranged R-tree (PBAR-tree). 相似文献
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The geographic information service is enabled by the advancements in general Web service technology and the focused efforts of the OGC in defining XML-based Web GIS service. Based on these models, this paper addresses the issue of services chaining,the process of combining or pipelining results from several interoperable GIS Web Services to create a customized solution. This paper presents a mediated chaining architecture in which a specific service takes responsibility for performing the process that describes a service chain. We designed the Spatial Information Process Language (SIPL) for dynamic modeling and describing the service chain, also a prototype of the Spatial Information Process Execution Engine (SIPEE) is implemented for executing processes written in SIPL. Discussion of measures to improve the functionality and performance of such system will be included. 相似文献