作为携带、沉积纳米荧光粉颗粒和纳米铁电体颗粒到FEDs 和 EL 器件上的载体的可印刷的油墨、粘结剂

文章介绍了两种移植和可控纳米沉积荧光粉颗粒和纳米铁电体颗粒的载体.第一种载体是一种可以悬浮和沉积合成的具有亚微米级尺寸大小的荧光粉颗粒的油墨.解决了该油墨的聚集和沉降问题,并发现该油墨具有良好的液流学性能,从而可用于印刷高分辨率的荧光粉.测量了相关的单个象素的阴极发光密度以评定这种丝网印刷油墨的可重复性.第二种载体是一种粘结剂,这种粘结剂不仅可以携带 30 μm 以及更大的尺寸的电致发光的荧光粉,还可以携带纳米铁电体颗粒.这种新型的粘结剂可应用于不需要额外的绝缘反射层的低造价的 EL 显示器.从衬底按要求将发射层剥下来就形成了柔性薄膜,将该薄膜置于两电极之间,仍可保持其电致发光的活性.该粘结剂薄膜可以很容易地印刷和定型制成显示屏.     

砂土介质中废旧轮胎加筋条带拉拔特性

为减少废旧轮胎大量堆放对环境造成的严重污染及潜在安全隐患,基于废旧轮胎良好的抗拉伸、耐老化及界面粗糙等特性,本研究提出将废旧轮胎切割成条,制成加筋条带,用作土工加筋材料的新型利用方法。通过调整砂土不同密实度条件,对比开展废旧轮胎条带及土工格栅拉拔特性试验研究。结果表明,砂土介质中废旧轮胎条带达到极限拉拔力之前,拉拔位移随拉拔力的增长而线性增长;极限拉拔力统计表明,加筋条带界面抗剪强度符合摩尔-库仑强度准则,并由此建立界面抗剪强度与界面摩擦角及似黏聚力的线性关系。通过对比土工格栅加筋性能,发现废旧轮胎条带的剪应力峰值约为土工格栅的2.5~3.2倍;达到剪应力峰值所需要的位移约为土工格栅的5倍。研究成果验证了废旧轮胎条带作为加筋材料的可行性,为进一步开展理论研究及工程应用奠定了基础。     

基于三维GIS的地质勘探线剖面图自动绘制软件的研究

分析了地质剖面图的几何特征。利用GIS技术,融合基础地质数据、钻孔数据,建立了地质剖面图的四层数据模型,根据图形的物理含义以及图形元素类型,进行了剖面图的两次分层处理,最终实现了地质剖面图的自动绘制。     

基于交通遥感图像处理的车辆目标识别方法

遥感技术可以获取城市全局的交通状况,弥补地面传感器的不足;针对交通遥感图像处理的核心问题"车辆目标识别",设计了一种基于图层分离和最大类间方差阈值分割技术的识别算法;通过图层分离把原始图像转换为深、浅两个图层,将深色车、浅色车、路面三者的区分转换为了适于使用最大类间方差法的图像分割,即深色路面与深色车分割、浅色路面与浅色车分割;为了改善识别效果,还使用了图像辐射增强技术和形态学中的去噪技术;经测试,算法对浅色车的识别率大于80%,深色车的识别率大于75%。     

一种栅格图层的模糊叠置分析模型

为了更好地进行GIS空间分析，根据GIS应用领域中属性数据的区间值特征，首先利用区间值模糊集来描述模糊属性数据的模糊图层，然后基于区间值模糊集给出了一种栅格图层的模糊叠置分析模型，并改进了基于经典模糊集的模糊叠置分析方法。该模型利用区间值模糊集的基本运算，可以实现普通模糊叠置和加权模糊叠置，而采用区间值，则可以减少属性值模糊性的丢失，且叠置结果符合人们的认知和推理规律，实例结果表明，该模型能够较好地解决区间值属性图层间的模糊叠置分析问题。     

110kV依克湖智能变电站保护组网方式分析

通过分析DL／T860规约标准下的“三层两网”组网方式,对110kV依克湖智能变电站保护配置组网方案进行研究。对于信息传输量大、可靠性要求高的主变保护和母线保护,采用光纤直接采样直接跳闸的组网方式,保护运行可靠,动作快速;对于备自投装置、低周低压减载等采用光纤网络采样网络跳闸的组网方式,能较好的实现保护信息量的配置,保护运行稳定可靠。采用双绞线以太网的MMS网络组网方式,按DL／T860规约建模,能形成智能化变电站监控系统。     

Ligand‐Free Synthesis of Aluminum‐Doped Zinc Oxide Nanocrystals and their Use as Optical Spacers in Color‐Tuned Highly Efficient Organic Solar Cells

The color of polymer solar cells using an opaque electrode is given by the reflected light, which depends on the composition and thickness of each layer of the device. Metal‐oxide‐based optical spacers are intensively studied in polymer solar cells aiming to optimize the light absorption. However, the low conductivity of materials such as ZnO and TiO₂ limits the thickness of such optical spacers to tenths of nanometers. A novel synthesis route of cluster‐free Al‐doped ZnO (AZO) nanocrystals (NCs) is presented for solution processing of highly conductive layers without the need of temperature annealing, including thick optical spacers on top of polymer blends. The processing of 80 nm thick optical spacers based on AZO nanocrystal solutions on top of 200 nm thick polymer blend layer is demonstrated leading to improved photocurrent density of 17% compared to solar cells using standard active layers of 90 nm in combination with thin ZnO‐based optical spacers. These AZO NCs also open new opportunities for the processing of high‐efficiency color tuned solar cells. For the first time, it is shown that applying solution‐processed thick optical spacer with polymer blends of different thicknesses can process solar cells of similar efficiency over 7% but of different colors.     

Localized Ligand Induced Electroless Plating (LIEP) Process for the Fabrication of Copper Patterns Onto Flexible Polymer Substrates

The “ligand induced electroless plating (LIEP) process” is a simple process to obtain localized metal plating onto flexible polymers such as poly(ethylene terephtalate) and polyvinylidene fluoride sheets. This generic and cost‐effective process, efficient on any common polymer surface, is based on the covalent grafting by the GraftFast process of a thin chelating polymer film, such as poly(acrylic acid), which can complex copper ions. The entrapped copper ions are then chemically reduced in situ and the resulting Cu⁰ species act as a seed layer for the electroless copper growth which, thus, starts inside the host polymer. The present work focuses on the application of the LIEP process to the patterning of localized metallic tracks via two simple lithographic methods. The first is based on a standard photolithography process using a positive photoresist masking to prevent the covalent grafting of PAA in designated areas of the polymer substrate. In the second, the patterning is performed by direct printing of the mask with a commercial laser printer. In both cases, the mask was lifted off before the copper electroless plating step, which provides ecological benefits, since only the amount of copper necessary for the metallic patterning is used.     

Non‐Covalent Functionalization of Graphene Using Self‐Assembly of Alkane‐Amines

A simple, versatile method for non‐covalent functionalization of graphene based on solution‐phase assembly of alkane‐amine layers is presented. Second‐order Møller–Plesset (MP2) perturbation theory on a cluster model (methylamine on pyrene) yields a binding energy of ≈220 meV for the amine–graphene interaction, which is strong enough to enable formation of a stable aminodecane layer at room temperature. Atomistic molecular dynamics simulations on an assembly of 1‐aminodecane molecules indicate that a self‐assembled monolayer can form, with the alkane chains oriented perpendicular to the graphene basal plane. The calculated monolayer height (≈1.7 nm) is in good agreement with atomic force microscopy data acquired for graphene functionalized with 1‐aminodecane, which yield a continuous layer with mean thickness ≈1.7 nm, albeit with some island defects. Raman data also confirm that self‐assembly of alkane‐amines is a non‐covalent process, i.e., it does not perturb the sp² hybridization of the graphene. Passivation and adsorbate n‐doping of graphene field‐effect devices using 1‐aminodecane, as well as high‐density binding of plasmonic metal nanoparticles and seeded atomic layer deposition of inorganic dielectrics using 1,10‐diaminodecane are also reported.     

脉冲激光外延生长YBa2Cu3O7–δ涂层导体LaMnO3缓冲层

采用脉冲激光沉积技术在双轴织构的Ni95W5(Ni-5W)合金基底上外延生长了LaMnO3(LMO)薄膜作为涂层导体缓冲层,研究了沉积温度对LMO薄膜生长织构和表面形貌的影响。研究结果表明：沉积温度对LMO薄膜的表面形貌有一定的影响;在沉积温度为650 ℃时,LMO薄膜具有良好的(00l)取向,薄膜表面平整均匀,光滑致密,其均方根粗糙度在2 nm以下;而且,在此LMO缓冲层上外延生长的YBa2Cu3O7–δ超导层具有良好的双轴织构,超导转变温度Tc为92 K,转变宽度小于1 K,临界电流密度Jc为5.3×105 A/cm2(77 K,自场)。