浸入凝胶法聚合物膜形成机理的研究现状

从热力学、传质动力学、相分离机制和固化过程几方面综述了浸入凝胶过程中聚合物膜形成机理的研究现状 .指出浸入凝胶成膜过程是传质交换和由传质交换引发的相分离以及其后的固化过程之间相互竞争的复杂非平衡过程 ,膜结构是上述几个过程竞争的结果     

Plasma immersion ion implantation for SOI synthesis: SIMOX and ion-cut

We have demonstrated feasibility to form silicon-on-insulator (SOI) substrates using plasma immersion ion implantation (PIII) for both separation by implantation of oxygen and ion-cut. This high throughput technique can substantially lower the high cost of SOI substrates due to the simpler implanter design as well as ease of maintenance. For separation by plasma implantation of oxygen wafers, secondary ion mass spectrometry analysis and cross-sectional transmission electron micrographs show continuous buried oxide formation under a single-crystal silicon overlayer with sharp Si/SiO₂ interfaces after oxygen plasma implantation and high-temperature (1300°C) annealing. Ion-cut SOI wafer fabrication technique is implemented for the first time using PIII. The hydrogen plasma can be optimized so that only one ion species is dominant in concentration and there are minimal effects by other residual ions on the ion-cut process. The physical mechanism of hydrogen induced silicon surface layer cleavage has been investigated. An ideal gas law model of the microcavity internal pressure combined with a two-dimensional finite element fracture mechanics model is used to approximate the fracture driving force which is sufficient to overcome the silicon fracture resistance.     

等离子体浸没式离子注入-离子束增强沉积TiN膜研究

本文采用一种新型的等离子体浸没式离子注入 离子束增强沉积的技术(PIII IBAD),在Cr12MoV钢基体上制备出了TiN膜,对沉积膜的组织进行了光电子能谱分析,并对沉积膜进行了硬度检测、摩擦试验及磨痕形貌分析。试验结果表明,沉积膜中的组织为TiN、TiO2和Ti2O3,TiN膜具有高达Hv3200的高硬度和极其优良的摩擦性能。     

20μm高灵敏浸没型碲镉汞红外探测器

报道了一种新型高灵敏浸没型ＨｇＣｄＴｅ红外探测器的研制，获得了Ｄ＾＊＝１．４６×１０＾１１ｃｍＨｚ＾１／２Ｗ＾－１，Ｒ＝６０８Ｖ／Ｗ，λｃ（２０％）－２０μ，灵敏元面积Ａ＝０．１２×０．１２ｍｍ＾２，和有效通光孔径ψ＝６ｍｍ的浸没型器件。     

用EGS4分析9MeV行波直线加速器屏蔽系统

采用了国际上广泛使用的ＭｏｎｔｅＣａｒｌｏ模拟计算程序ＥＧＳ４对海关集装箱检测系统用加速器屏蔽系统进行了辐射模拟分析，与实际测试数据进行分析、比较，解释了特殊剂量分布的原因，提出了系统改进的参考方案。     

Zr41.5Ti14Cu13Ni10Be22.5大块非晶的耐蚀性能

用浸泡法研究了ZrTiCuNiBe大块非晶合金在酸、碱、 盐各种腐蚀性介质中的腐蚀行为.并与典型材料做了比较，结果表明：ZrTiCuNiBe大块非晶合金具有良好的耐蚀性.     

Cu-Ce-Mn-O/SiO_2/CC作催化剂还原脱除NO研究

以硅胶改性堇青石蜂窝陶瓷为载体,分别制备了3种不同CuO负载量的Cu-Ce-Mn-O/S iO2/CC催化剂。以CO(NH2)2为还原剂,在固定床反应器中进行选择性催化还原NO的研究。采用XRD、SEM、TPR等测试方法对催化剂进行表征。结果表明,在300~500℃CuO负载量为33%的Cu-Ce-Mn-O/S iO2/CC催化剂效果最好。反应温度为450℃,空速为8 000 h-1时催化剂催化还原NO的转化率可达到88%。     

A New Robust Adaptive Control of Uncertain Nonlinear Systems and Pendulum Application

A new robust adaptive control of uncertain nonlinear systems is proposed in this paper. The proposed method combines sliding mode control with the immersion and invariance (I&I) adaptive scheme, and it has more available degrees of freedom than using the backstepping scheme. Via the proposed method, a class of nonlinear systems with mismatched parametric perturbations can be rendered asymptotically stable and the performance of the system can also be improved. Finally, the proposed method is applied to a simple pendulum with motor dynamics, and simulation results show the effectiveness and performance of the proposed method.     

一次性使用无菌注射器用橡胶活塞的化学分析方法的改进

介绍一次性使用无菌注射器用橡胶塞的化学分析方法。在适宜的酸度条件下，用碘量法测定易氧化物；重金属含量通常是测其硫化物的含量来判定的，本方法是采用硫代乙酰胶试剂作沉淀剂；锌离子能与亚铁氰化钾溶液及应生成白色络合物沉淀，因此采用亚铁氰化钾比浊法测其锌含量；利用硫氰酸铵比色法测其铁含量。本方法操作具体，比色明显、定量明确，对试样的测定得到了满意的结果。