CMOS影像感应器构装——湿式无电镀镍沉积技术之最佳化

无电镀镍金（Electroless Nickel ＆ Immersion Gold;简称ENIG）沉积可以选择性地沉积于铝垫,由于此技术不必使用高成本之光阻微影制程,也不需真空溅镀制程,它可以降低制造成本。然而在实际制造大量生产时,常常面临到化学镀液很难控制之问题。经由精密控制其化学镀液中之一些重要参数,例如温度、pH值、还原剂、镍及稳定剂浓度等,可以明显提高制程性能,以满足量产需求。     

沸腾系统中的干斑作用特性

从壁面湿润的角度出发,阐述了干斑的形成是导致临界热负荷及稳定膜沸腾的原因。从理论上分析了干斑湿润过程中的自组织现象,阐述了过渡沸腾阶段出现突变和滞后的原因及条件。对流动稳定性模型理论和干斑模型理论给出了统一的解释。文章的理论分析与实验观察及实验测量相吻合。     

GaAs MESFET自升温效应的分析

分析了ＧａＡｓＭＥＳＦＥＴ由于沟道电流功耗而引起的器件自升温效应。以基本的Ｐｏｉｓｏｎ方程、电流方程及热流方程为基础,采用二维数值分析法,确定了器件内部自升温效应下的温度分布特点,以及决定器件自升温幅度的主要因素。     

波分复用光网络的自愈方法分析

WDM (WavelengthDivisionMultiplexing ,波分复用 )系统的应用使得大容量的业务日益集中于同一系统内 ,这同时提高了对网络自愈性能的要求 ,从而导致各种自愈技术的发展。因为光器件具有高速交换的优点 ,因而从光层对业务恢复具有极大的优越性。文中主要分析了几种典型的光层的自愈方法     

核电站核岛施工塔吊布置

针对核电站核岛工程中各建筑物平面布置紧凑、现浇混凝土量大、工期紧等特点,提出核岛建造期间施工塔吊动态平面布置、塔吊基础设计及附着装置的安装方法。     

Nanoscale Refractive Index Tuning of Siloxane‐Based Self‐Assembled Electro‐Optic Superlattices

The refractive indices of self‐assembled organic electro‐optic superlattices can be tuned by intercalating high‐Z optically transparent group 13 metal oxide sheets into the structures during the self‐assembly process. Microstructurally regular acentricity and sizable electro‐optic responses are retained in this straightforward synthetic procedure. This “one‐pot” all wet‐chemistry approach involves: i) layer‐by‐layer covalent self‐assembly of intrinsically acentric multilayers of high‐hyperpolarizability chromophores on inorganic oxide substrates, ii) protecting group cleavage to generate a large density of reactive surface hydroxyl sites, iii) self‐limiting capping of each chromophore layer with octachlorotrisiloxane, iv) deposition of metal oxide sheets derived from THF solutions of Ga(OⁱC₃H₇)₃ or In(OⁱC₃H₇)₃, and v) covalent capping of the resulting superlattices.     

Self‐Assembled Monolayers on Gold for the Fabrication of Radioactive Stents

An innovative and easily applicable method for the fabrication of radioactive stents, to be used for the treatment of restenosis, is presented. By incorporating the β‐emitting radioisotopes ¹⁸⁶Re, ¹⁸⁸Re, ⁹⁰Y, or ³²P into sulfur‐containing adsorbates, it becomes possible to cover a gold surface with a radioactive self‐assembled monolayer (SAM). Two methods have been investigated. In the first, SAMs consisting of potentially radioactive rhenium‐, yttrium‐, and phosphorus‐containing adsorbates have been assembled on 2D gold substrates, after which they have been studied by wettability measurements, electrochemistry, and X‐ray photoelectron spectroscopy (XPS). The stability of these SAMs under simulated physiological conditions (phosphate buffered saline, PBS solution) for periods up to two months has been demonstrated. Alternatively, potentially radioactive monolayers have been prepared by exposure of SAMs of mono‐, bi‐, and tridentate ligands to a solution containing a radiometal (rhenium) in order to bind the metal to the monolayer. The polydentate ligands exhibit excellent binding capacity, leading to SAMs containing over 10^–10 mol/cm² of the radiometal, which is more than sufficient to make this system viable for the delivery of therapeutical dosages of radiation.     

Patterning Porous Oxides within Microchannel Networks

A continuing challenge for materials chemists and engineers is the ability to create multifunctional composite structures with well‐defined superimposed structural order from nanometer to micrometer length scales. Materials with three‐dimensional structures ordered over multiple length scales can be prepared by carrying out colloidal crystallization and inorganic/organic cooperative self‐assembly within microchannel networks. The resulting materials show hierarchical ordering over several discrete and tunable length scales ranging from several nanometers to micrometers. These patterned porous materials hold promise for use as advanced catalysts, sensors, low‐k dielectrics, optoelectronic and integrated photonic crystal devices.